Showing results 1 to 50 out of 264
AstroNote 2025-324
Type: Object/s-Data/Analysis
Released: 2025-11-18 12:02:11
LCO observations of AT 2025adje (ASASSN-25et), a bright supernova candidate in PGC 047292, at a redshift of z = 0.00796
P.G. Berdayes, J. Basurto Merino, A. Caballero-Almagro, A. Cerón, M. Contreras, F. Díaz-Segado, T. Ferrer-Laviña, B. Ga…
Source Group: ULL-ASTRO-MASTER
Keywords: Transient, Supernova, Optical
Related Objects:
2025adje [ASASSN-25et]
RA, DEC:13:28:48.658, +38:44:47.39
(202.202742, 38.746496)
Redshift:0.00796
Type:SN II
See object 2025adje [ASASSN-25et]
We report on Las Cumbres Observatory (LCO) observations of the bright supernova candidate AT 2025adje, discovered by ASAS-SN (ASASSN-25et) after seasonal break and located close to the galaxy PGC 047…
AstroNote 2025-322
Type: Object/s-Data/Analysis
Released: 2025-11-14 13:01:48
H.E.S.S. observations and upper limits on the very-high-energy gamma-ray emission of TDE 2025aarm
L. Mohrmann (MPIK) for the H.E.S.S. Collaboration
Keywords: TDE, Gamma Rays
Related Objects:
2025aarm
RA, DEC:04:32:12.399, -05:22:39.51
(68.051664, -5.377641)
Redshift:0.01368
Type:TDE
See object 2025aarm
We report very-high-energy gamma-ray upper limits obtained with the High Energy Stereoscopic System (H.E.S.S.) for the nearby TDE 2025aarm.
AstroNote 2025-318
Type: Object/s-Data/Analysis
Released: 2025-11-09 20:31:05
X-ray detection of the off-nuclear TDE 2025abcr using Swift
Xander J. Hall (CMU), Robert Stein (JSI), Raffaella Margutti (UC Berkeley), Ryan Chornock (UC Berkeley), Erica Hammerst…
Source Group: DESIRT
Keywords: Transient, TDE, Ultra-Violet, X-rays
Related Objects:
TDE2025abcr
RA, DEC:01:46:55.386, -15:22:15.60
(26.730777, -15.371000)
Redshift:0.05
Type:TDE-H-He
See object TDE2025abcr
Related Notes:
2025-317
2025-3182025-11-09 03:54:08
Title: ZTF Classification of ZTF25abxvhmk/AT 2025abcr as a likely offnuclear TDE, possibly from an IMBH, at z=0.05
Authors: R. Stein (JSI), J. Carney (UNC), I. Andreoni (UNC), R. Chor…
Source Group: ZTF
We report a Swift-XRT detection of X-ray emission from the off-nuclear IMBH–TDE candidate 2025abcr. The X-rays are luminous and ultrasoft, while contemporaneous Swift-UVOT photometry shows the source…
AstroNote 2025-316
Type: Object/s-Data/Analysis
Released: 2025-11-07 23:42:09
X-ray detection of the TDE 2025aarm using Chandra
J. Somalwar (UC Berkeley/KIPAC@Stanford), R. Chornock (UC Berkeley), R. Margutti (UC Berkeley), I. Sfaradi (UC Berkeley…
Related Objects:
2025aarm
RA, DEC:04:32:12.399, -05:22:39.51
(68.051664, -5.377641)
Redshift:0.01368
Type:TDE
See object 2025aarm
We report the detection of X-ray emission coincident with the nearby tidal disruption event TDE 2025aarm
AstroNote 2025-315
Type: Object/s-Data/Analysis
Released: 2025-11-07 21:47:53
Radio detection of TDE 2025aarm with the Very Large Array
Collin T. Christy (Arizona), Kate D. Alexander (Arizona), Noah Franz (Arizona), Tanmoy Laskar (Utah), Yvette Cendes (Or…
Keywords: TDE, Radio
Related Objects:
2025aarm
RA, DEC:04:32:12.399, -05:22:39.51
(68.051664, -5.377641)
Redshift:0.01368
Type:TDE
See object 2025aarm
Related Notes:
2025-311
2025-3152025-10-30 18:30:50
Title: Classification of AT 2025aarm as a Rising Nearby H+He TDE
Authors: Sara Faris (Tel Aviv University), Hugo Tranin (Universitat …
Source Group: StarDestroyers
,
2025-313
2025-3152025-11-02 04:38:19
Title: Radio upper limits from the TDE 2025aarm using the Allen Telescope Array
Authors: Itai Sfaradi (UC Berkeley), Erica Hammerstein (UC Berkeley)…
We report the detection of radio emission coincident with the nearby tidal disruption event TDE 2025aarm.
AstroNote 2025-313
Type: Object/s-Data/Analysis
Released: 2025-11-02 04:38:19
Radio upper limits from the TDE 2025aarm using the Allen Telescope Array
Itai Sfaradi (UC Berkeley), Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley), Raffaella Margutti (UC Berkel…
Keywords: TDE, Radio
Related Objects:
2025aarm
RA, DEC:04:32:12.399, -05:22:39.51
(68.051664, -5.377641)
Redshift:0.01368
Type:TDE
See object 2025aarm
Related Notes:
2025-311
2025-3132025-10-30 18:30:50
Title: Classification of AT 2025aarm as a Rising Nearby H+He TDE
Authors: Sara Faris (Tel Aviv University), Hugo Tranin (Universitat …
Source Group: StarDestroyers
We report radio upper limits obtained at 5 and 8 GHz with the Allen Telescope Array for the nearby TDE 2025aarm.
AstroNote 2025-302
Type: Object/s-Data/Analysis
Released: 2025-10-20 19:05:56
Observations of the blue, rapidly-rising transient AT2025aarn
Rahul Jayaraman (Cornell), Xander J. Hall (CMU), Jacob Wise (LJMU), Anna Y. Q. Ho (Cornell), Zoe McGrath (LJMU), Aleksa…
Keywords: Optical, Spectroscopy, X-rays
Related Objects:
2025aarn [ZTF25abxjgzg]
RA, DEC:04:37:19.578, -08:46:35.93
(69.331573, -8.776647)
Redshift:0.01685
Type:SN II
See object 2025aarn [ZTF25abxjgzg]
We report photometry, spectroscopy, and X-ray observations of a rapidly rising (>3 mag/day) and blue optical transient.
AstroNote 2025-300
Type: Object/s-Data/Analysis
Released: 2025-10-16 17:49:52
DAO photometric follow-up of selected transients 2025 October
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025aadf
RA, DEC:21:39:37.970, +32:18:20.12
(324.908208, 32.305589)
Redshift:0.03
Type:SN Ib/c
See object 2025aadf
,
2025aads
RA, DEC:21:33:47.380, +33:05:12.34
(323.447415, 33.086762)
Redshift:
Type:
See object 2025aads
,
2025aafg
RA, DEC:02:12:03.539, +23:47:00.09
(33.014744, 23.783357)
Redshift:
Type:
See object 2025aafg
,
2025aagz
RA, DEC:22:29:13.439, +14:51:32.78
(337.305996, 14.859105)
Redshift:
Type:
See object 2025aagz
,
2025aaha
RA, DEC:00:48:52.340, +32:51:31.96
(12.218084, 32.858878)
Redshift:
Type:
See object 2025aaha
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2025-285
Type: Object/s-Data/Analysis
Released: 2025-09-16 14:41:25
Possible Type II Supernova in the Galaxy Cluster WHL0137-08
Alan Briseno (ETAMU), Wenlei Chen (OSU)
Keywords: Supernova, Photometry
Related Objects:
2022aezl
RA, DEC:01:37:23.390, -08:28:38.17
(24.347458, -8.477270)
Redshift:
Type:
See object 2022aezl
We report the detection of a possible Type II Supernova in the JWST NIRCam imaging of the galaxy cluster WHL0137-08 (GO 2282, PI: Coe Dan). Due to limited photometry and lack of spectra of the host g…
AstroNote 2025-270
Type: Object/s-Data/Analysis
Released: 2025-08-28 12:58:42
AT 2025seu: a superluminous supernova candidate in the red galaxy DESI J268.3778+61.7777 at a redshift of z = 0.2544
I. Pérez-Fournon (IAC and ULL), D. Cano-Morales (ULL), F. Poidevin (IAC and ULL), B. Armas-Chinea, I. Correa-Plasencia,…
Source Group: SGLF
Keywords: Supernova, Time-domain, Transient
Related Objects:
2025seu
RA, DEC:17:53:30.565, +61:46:38.99
(268.377356, 61.777497)
Redshift:0.2544
Type:
See object 2025seu
We report on AT 2025seu as a superluminous supernova candidate in the red galaxy DESI J268.3778+61.7777 with a DESI DR1 spectroscopic redshift of z = 0.2544.
AstroNote 2025-266
Type: Object/s-Data/Analysis
Released: 2025-08-25 20:26:22
Photometric follow-up of Type-IIP Supernova SN2025pht with BHTOM.space global telescope network
P.J.Mikolajczyk (U.Wroclaw/NCBJ, PL), L. Wyrzykowski (U.Warsaw/NCBJ, PL/EASST.eu), K.Kotysz (U.Wroclaw/U.Warsaw, PL), F…
Source Group: BHTOM
Keywords: Photometry, Catalogs, Optical, Time-domain, Transient, Supernova
Related Objects:
2025pht
RA, DEC:04:41:28.861, -02:51:55.61
(70.370254, -2.865447)
Redshift:
Type:SN IIP
See object 2025pht
Related Notes:
2025-216
2025-2662025-07-16 22:17:36
Title: SN 2025pht in NGC 1637: LCO position and identification of the progenitor star candidate in HST and JWST image
Authors: I. Pérez-Fournon (IAC and ULL), N. Elías-Rosa (INAF & I…
Source Group: SGLF
We report on the optical multiband photometric follow-up of SN 2025pht conducted with the BHTOM.space global telescope network.
AstroNote 2025-264
Type: Object/s-Data/Analysis
Released: 2025-08-23 00:01:18
DAO photometric follow-up of selected transients 2025-D
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025sda
RA, DEC:22:16:29.614, +23:28:46.85
(334.123391, 23.479679)
Redshift:
Type:
See object 2025sda
,
2025sdo
RA, DEC:23:15:30.856, +57:08:46.64
(348.878569, 57.146289)
Redshift:
Type:
See object 2025sdo
,
2025sev
RA, DEC:17:35:06.241, +64:05:10.72
(263.776003, 64.086310)
Redshift:
Type:
See object 2025sev
,
2025sgi
RA, DEC:18:32:43.082, +64:54:18.38
(278.179508, 64.905105)
Redshift:
Type:
See object 2025sgi
,
2025tay
RA, DEC:22:15:33.715, +12:45:28.93
(333.890479, 12.758037)
Redshift:
Type:
See object 2025tay
,
2025tbk
RA, DEC:22:48:36.744, +13:55:55.20
(342.153098, 13.932001)
Redshift:0.1309
Type:SN IIn
See object 2025tbk
,
2025tgu
RA, DEC:23:20:44.946, +18:50:12.55
(350.187276, 18.836818)
Redshift:0.038
Type:SN II
See object 2025tgu
,
2025thk
RA, DEC:20:48:06.564, +28:45:06.92
(312.027351, 28.751922)
Redshift:
Type:
See object 2025thk
,
2025upu
RA, DEC:18:58:04.125, +24:56:22.09
(284.517187, 24.939470)
Redshift:
Type:
See object 2025upu
,
2025urd
RA, DEC:00:12:23.014, +23:17:34.70
(3.095892, 23.292972)
Redshift:
Type:
See object 2025urd
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2025-263
Type: Object/s-Data/Analysis
Released: 2025-08-21 23:44:21
DAO Photometric Follow Up of selected optical transients - July 2025
M R. Kendurkar (GSNST)
Source Group: GSNST
Keywords: Surveys, Photometry, Transient, Optical
Related Objects:
2025rmk
RA, DEC:23:49:10.551, +22:11:41.34
(357.293961, 22.194815)
Redshift:
Type:
See object 2025rmk
,
2025rnc
RA, DEC:21:22:19.439, +16:22:41.39
(320.580997, 16.378165)
Redshift:
Type:
See object 2025rnc
,
2025roc
RA, DEC:21:00:52.220, +18:55:07.42
(315.217583, 18.918727)
Redshift:
Type:
See object 2025roc
,
2025rop
RA, DEC:23:34:04.147, +01:34:45.55
(353.517281, 1.579319)
Redshift:0.044231
Type:SN Ic
See object 2025rop
,
2025ruk
RA, DEC:19:19:11.563, +33:43:40.90
(289.798179, 33.728027)
Redshift:0.09025
Type:SN Ic
See object 2025ruk
,
2025rvc
RA, DEC:20:01:46.651, +14:17:52.82
(300.444379, 14.298007)
Redshift:
Type:
See object 2025rvc
,
2025rwr
RA, DEC:17:48:24.637, +28:17:27.57
(267.102654, 28.290992)
Redshift:
Type:
See object 2025rwr
,
2025rxc
RA, DEC:19:27:18.837, +44:38:08.94
(291.828488, 44.635816)
Redshift:
Type:
See object 2025rxc
,
2025rxe
RA, DEC:18:25:52.020, +34:14:12.11
(276.466750, 34.236697)
Redshift:
Type:
See object 2025rxe
,
2025rxg
RA, DEC:18:07:57.938, +30:00:53.92
(271.991408, 30.014979)
Redshift:
Type:
See object 2025rxg
,
2025sab
RA, DEC:17:15:31.995, +04:49:01.88
(258.883312, 4.817190)
Redshift:
Type:
See object 2025sab
,
2025sad
RA, DEC:20:59:05.704, +11:08:41.09
(314.773765, 11.144746)
Redshift:0.031458
Type:SN II
See object 2025sad
,
2025sbe
RA, DEC:18:36:18.929, +36:56:31.14
(279.078870, 36.941982)
Redshift:
Type:
See object 2025sbe
,
2025sbx
RA, DEC:23:31:40.780, +33:29:47.80
(352.919916, 33.496612)
Redshift:0.066
Type:SN Ia
See object 2025sbx
,
2025sce
RA, DEC:20:42:02.698, +21:54:21.51
(310.511240, 21.905976)
Redshift:0.066
Type:SN Ia
See object 2025sce
Here we present multi-band photometric follow up observations of 15 optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council of …
AstroNote 2025-261
Type: Object/s-Data/Analysis
Released: 2025-08-18 07:04:14
DAO Photometric Follow Up of 2025rbs
M R. Kendurkar (GSNST)
Source Group: GSNST
Keywords: Surveys, Photometry, Transient, Nova, Optical
Related Objects:
2025rbs
RA, DEC:22:37:03.638, +34:25:07.98
(339.265160, 34.418884)
Redshift:0.002722
Type:SN Ia
See object 2025rbs
Here we present multi-band photometric follow up observations of SN 2025rbs in NGC 7331 using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council of…
AstroNote 2025-255
Type: Object/s-Data/Analysis
Released: 2025-08-13 11:59:47
Photometric follow-up of extragalactic nova candidate AT2025ggn with BHTOM.space global telescope network
P.J.Mikolajczyk (U.Wroclaw/NCBJ, PL), L. Wyrzykowski (U.Warsaw/NCBJ, PL), K.Kotysz (U.Wroclaw/U.Warsaw, PL), F.-J. Hamb…
Source Group: BHTOM
Keywords: Photometry, Catalogs, Optical, Time-domain, Transient
Related Objects:
2025ggn [ASASSN-25ax]
RA, DEC:05:03:37.058, -69:24:08.82
(75.904410, -69.402450)
Redshift:
Type:
See object 2025ggn [ASASSN-25ax]
We report on the optical photometric follow-up of AT2025ggn (ASASSN-25ax) conducted with the BHTOM.space global telescope network.
AstroNote 2025-237
Type: Object/s-Data/Analysis
Released: 2025-07-29 11:06:37
Photometric follow-up of SN2025bof with BHTOM.space global telescope network
P.Mikolajczyk (U.Wroclaw/NCBJ, PL), L. Wyrzykowski (U.Warsaw/NCBJ, PL), K.Kotysz (U.Wroclaw/U.Warsaw, PL), S. Kurowski …
Source Group: BHTOM
Keywords: Transient, Optical, Photometry, Time-domain
Related Objects:
2025bof
RA, DEC:19:56:35.332, +50:14:22.58
(299.147217, 50.239604)
Redshift:0.03021
Type:SN Ia
See object 2025bof
We report on the optical photometric follow-up of SN 2025bof conducted with a telescope network through BHTOM.space system.
AstroNote 2025-229
Type: Object/s-Data/Analysis
Released: 2025-07-24 18:31:19
DAO photometric follow-up of selected transients 2025-C
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025kpp
RA, DEC:12:04:57.795, +26:05:32.00
(181.240813, 26.092222)
Redshift:
Type:
See object 2025kpp
,
2025kpr
RA, DEC:13:40:12.436, +34:44:12.95
(205.051817, 34.736931)
Redshift:
Type:
See object 2025kpr
,
2025qmi
RA, DEC:17:24:03.782, +51:33:43.49
(261.015759, 51.562081)
Redshift:0.061
Type:SN Ia
See object 2025qmi
,
2025qna
RA, DEC:14:45:01.650, +41:17:41.29
(221.256873, 41.294802)
Redshift:
Type:
See object 2025qna
,
2025qpm
RA, DEC:18:37:43.302, +60:48:01.58
(279.430426, 60.800440)
Redshift:0.0295
Type:SN II
See object 2025qpm
,
2025qpv
RA, DEC:21:30:58.771, +22:32:29.50
(322.744880, 22.541528)
Redshift:0.0456
Type:SN Ia
See object 2025qpv
,
2025qqg
RA, DEC:16:24:43.374, +28:38:27.44
(246.180724, 28.640955)
Redshift:
Type:
See object 2025qqg
,
2025qqz
RA, DEC:18:11:06.402, +15:17:18.55
(272.776675, 15.288486)
Redshift:0.031
Type:SN II
See object 2025qqz
,
2025rcd
RA, DEC:21:02:17.271, +22:04:55.84
(315.571963, 22.082176)
Redshift:
Type:
See object 2025rcd
,
2025rff
RA, DEC:17:37:56.240, +48:43:30.87
(264.484335, 48.725242)
Redshift:
Type:
See object 2025rff
,
2025rhx
RA, DEC:16:18:19.029, +41:07:55.62
(244.579286, 41.132117)
Redshift:
Type:
See object 2025rhx
,
2025rwr
RA, DEC:17:48:24.637, +28:17:27.57
(267.102654, 28.290992)
Redshift:
Type:
See object 2025rwr
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2025-216
Type: Object/s-Data/Analysis
Released: 2025-07-16 22:17:36
SN 2025pht in NGC 1637: LCO position and identification of the progenitor star candidate in HST and JWST image
I. Pérez-Fournon (IAC and ULL), N. Elías-Rosa (INAF & ICE / CSIC), F. Poidevin, D. Aguado, A. López-Oramas, and D. …
Source Group: SGLF
Keywords: Supernova, Transient, Time-domain
Related Objects:
2025pht [ASASSN-25cw]
RA, DEC:04:41:28.861, -02:51:55.61
(70.370254, -2.865447)
Redshift:
Type:SN IIP
See object 2025pht [ASASSN-25cw]
SN 2025pht (ASASSN-25cw) was discovered by K. Z. Stanek and spectroscopically classified as a SN IIP by J. Strader. The host galaxy, NGC 1637, at a redshift of z = 0.002392 has extensive archival HS…
AstroNote 2025-209
Type: Object/s-Data/Analysis
Released: 2025-07-11 22:14:06
Swift/UVOT observations of SN 2025qtt 6 minutes after its automatic discovery by BTSbot-nearby
Nabeel Rehemtulla (NU), Steve Schulze (NU), Wynn Jacobson-Galán (Caltech), Jesper Sollerman (OKC), Theophile du Laz (Ca…
Source Group: ZTF
Keywords: Optical, Ultra-Violet, Supernova
Related Objects:
2025qtt [ZTF25abawltx]
RA, DEC:19:31:06.001, +54:06:03.49
(292.775004, 54.100970)
Redshift:0.012839
Type:SN II
See object 2025qtt [ZTF25abawltx]
Related Notes:
2024-140
2025-2092024-05-31 13:09:33
Title: BTSbot-nearby: a new program for very rapid autonomous follow-up of young, nearby extragalactic transients found in ZTF data
Authors: Nabeel Rehemtulla (NU, CIERA), Theophile Jegou du Laz (Calt…
Source Group: ZTF
,
2025-46
2025-2092025-02-03 15:54:18
Title: Early spectroscopy of SNe 2025ay, 2025mg, 2025oq, and 2025aml autonomously triggered by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
,
2025-208
2025-2092025-07-08 23:00:43
Title: Automatic ground- and space-based follow-up of SN 2025qpk following its discovery by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
We report the rapid, automatic UV/optical follow-up of the young Type II SN 2025qtt at d=38.5 Mpc, including Swift/UVOT observations starting just 6 minutes after its discovery by BTSbot-nearby. Our …
AstroNote 2025-208
Type: Object/s-Data/Analysis
Released: 2025-07-08 23:00:43
Automatic ground- and space-based follow-up of SN 2025qpk following its discovery by BTSbot-nearby
Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech), Steve Schulze (NU), Jesper Sollerman…
Source Group: ZTF
Keywords: Optical, Supernova, Ultra-Violet
Related Objects:
2025qpk [ZTF25abadtsx]
RA, DEC:20:44:37.563, -01:43:12.51
(311.156512, -1.720140)
Redshift:0.01377
Type:SN Ia
See object 2025qpk [ZTF25abadtsx]
Related Notes:
2023-265
2025-2082023-10-11 20:39:39
Title: SN 2023tyk: discovery to spectroscopic classification performed fully automatically
Authors: Nabeel Rehemtulla (NU), Adam Miller (NU), Christoffer Freml…
Source Group: ZTF
,
2024-140
2025-2082024-05-31 13:09:33
Title: BTSbot-nearby: a new program for very rapid autonomous follow-up of young, nearby extragalactic transients found in ZTF data
Authors: Nabeel Rehemtulla (NU, CIERA), Theophile Jegou du Laz (Calt…
Source Group: ZTF
,
2025-46
2025-2082025-02-03 15:54:18
Title: Early spectroscopy of SNe 2025ay, 2025mg, 2025oq, and 2025aml autonomously triggered by BTSbot-nearby
Authors: Nabeel Rehemtulla (NU), Wynn Jacobson-Galán (Caltech), Theo…
Source Group: ZTF
We report the BTSbot-nearby discovery and follow-up of SN 2025qpk, a young Type Ia SN at z=0.01377. BTSbot-nearby autonomously triggered Swift using the new urgency 0 mode, which enabled the Swift ob…
AstroNote 2025-195
Type: Object/s-Data/Analysis
Released: 2025-06-25 17:21:39
Swift observations of AT2025ngt
S. Campana (INAF-Brera)
Keywords: Supernova
Related Objects:
2025ngt [ZTF25aaurzyo]
RA, DEC:19:09:04.262, +47:52:47.04
(287.267757, 47.879733)
Redshift:0.0972
Type:SN Ic-BL
See object 2025ngt [ZTF25aaurzyo]
Related Notes:
2025-190
2025-1952025-06-19 21:03:59
Title: ZTF Observations of the Fast, Blue, and Luminous Optical Transient AT2025ngt
Authors: Michael Camilo (Cornell), Kaustav Kashyap Das (Caltech), Ca…
Source Group: ZTF
,
2025-193
2025-1952025-06-22 09:41:59
Title: Keck/LRIS spectroscopy of AT2025ngt
Authors: Daniel A. Perley (LJMU), Anna Y. Q. Ho (Cornell), WeiKang Z…
Source Group: ZTF
We observed AT2025ngt with Swift, detecting the transient in all the UVOT filters but not in the X-rays.
AstroNote 2025-190
Type: Object/s-Data/Analysis
Released: 2025-06-19 21:03:59
ZTF Observations of the Fast, Blue, and Luminous Optical Transient AT2025ngt
Michael Camilo (Cornell), Kaustav Kashyap Das (Caltech), Cassie Sevilla (Cornell), Anna Y. Q. Ho (Cornell)
Source Group: ZTF
Keywords: Transient, Optical, Spectroscopy
Related Objects:
2025ngt [ZTF25aaurzyo]
RA, DEC:19:09:04.262, +47:52:47.04
(287.267757, 47.879733)
Redshift:0.0972
Type:SN Ic-BL
See object 2025ngt [ZTF25aaurzyo]
We report ZTF observations of a fast, luminous, and blue transient, AT2025ngt (ZTF25aaurzyo). The spectroscopic redshift of the host galaxy is z = 0.097, implying a peak absolute extinction-corrected…
AstroNote 2025-189
Type: Object/s-Data/Analysis
Released: 2025-06-19 09:47:11
AMI-LA observations of AT2024aehp
Nadav Shoval (HUJI) , Assaf Horesh (HUJI), Andrew Hughes(Oxford), Joe Bright (Oxford), Yirmi Bernstein (HUJI), Adam Lan…
We report the detection of the AT2018cow-like source AT2024aehp with the radio telescope AMI-LA at 15.5 GHz.
AstroNote 2025-181
Type: Object/s-Data/Analysis
Released: 2025-06-13 07:36:10
AT 2025ngs (ATLAS25gbi, ZTF25aauvber): a bright supernova candidate in NGC 5961
I. Pérez-Fournon (IAC and ULL), N.C. Sun (UCAS), F. Poidevin, D. Aguado, A. López-Oramas, D. Nespral (IAC and ULL), A…
Source Group: SGLF
Keywords: Supernova, Optical, Transient
Related Objects:
2025ngs
RA, DEC:15:35:16.677, +30:51:55.75
(233.819486, 30.865486)
Redshift:0.0063
Type:SN II
See object 2025ngs
Here we report on the bright and likely fast rising supernova candidate AT 2025ngs (ATLAS25gbi, ZTF25aauvber) in NGC 5961 (at a mean metric distance of 32.7 Mpc), detected by ATLAS and ZTF.
AstroNote 2025-148
Type: Object/s-Data/Analysis
Released: 2025-05-16 01:31:12
DAO photometric follow-up of selected transients 2025-B
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025jau
RA, DEC:14:42:54.732, +41:07:43.35
(220.728051, 41.128709)
Redshift:
Type:
See object 2025jau
,
2025jbe
RA, DEC:13:09:18.842, +55:49:32.71
(197.328510, 55.825753)
Redshift:
Type:
See object 2025jbe
,
2025jxn
RA, DEC:16:44:41.820, +41:19:02.44
(251.174250, 41.317344)
Redshift:0.078733
Type:SN Ia
See object 2025jxn
,
2025kfm
RA, DEC:14:21:13.694, +29:59:27.96
(215.307060, 29.991101)
Redshift:0.030214
Type:SN Ia
See object 2025kfm
,
2025kfs
RA, DEC:16:49:42.978, +49:00:53.41
(252.429073, 49.014836)
Redshift:
Type:
See object 2025kfs
,
2025khk
RA, DEC:15:40:06.541, +35:44:44.70
(235.027252, 35.745750)
Redshift:0.066759
Type:SN Ia
See object 2025khk
,
2025khu
RA, DEC:10:30:38.411, +46:57:58.76
(157.660045, 46.966323)
Redshift:0.063
Type:SN Ia
See object 2025khu
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2025-130
Type: Object/s-Data/Analysis
Released: 2025-04-30 20:47:10
Photometric measurements in V and B for T CrB using LCO 0.4m network
Julio Vannini (LIADA)
Keywords: Photometry, Variable Star, Nova, Cataclysmic Variable
Related Objects:
T CrB [T Coronae Borealis]
RA, DEC:00:00:00.000,
(0.000000, 0.000000)
Redshift:
Type:
T CrB [T Coronae Borealis]
Related Notes:
2024-195
2025-1302024-07-15 00:29:21
Title: V & B Measurements for T Corona Borealis (T CrB) previous to its predicted eruption
Authors: Vannini, J (AAVSO / SEV-LIADA)
Photometric measurements of T CrB using LCO 0.4m network observatories: McDonald & Haleakala sites, with Bessel-V and Bessel-B photometric filters, and QHY600 imaging device.
AstroNote 2025-124
Type: Object/s-Data/Analysis
Released: 2025-04-23 00:17:43
DAO photometric follow-up of selected transients 2025-A
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025dju
RA, DEC:13:28:03.565, +34:19:46.72
(202.014855, 34.329644)
Redshift:0.034081
Type:SN Ia
See object 2025dju
,
2025euy
RA, DEC:15:24:02.480, +38:15:12.78
(231.010332, 38.253550)
Redshift:
Type:
See object 2025euy
,
2025euz
RA, DEC:14:24:20.565, +28:58:29.08
(216.085686, 28.974746)
Redshift:0.039183
Type:SN Ia
See object 2025euz
,
2025fan
RA, DEC:09:40:37.671, +28:58:11.99
(145.156961, 28.969998)
Redshift:
Type:
See object 2025fan
,
2025fas
RA, DEC:08:03:20.986, +66:02:55.91
(120.837440, 66.048864)
Redshift:0.0391
Type:SN Ia
See object 2025fas
,
2025fcm
RA, DEC:12:52:50.981, +46:45:33.43
(193.212421, 46.759286)
Redshift:0.06
Type:SN Ia
See object 2025fcm
,
2025gyz
RA, DEC:08:29:27.773, +32:37:13.22
(127.365720, 32.620339)
Redshift:0.09
Type:SN Ia
See object 2025gyz
,
2025gzz
RA, DEC:17:12:03.617, +20:24:02.68
(258.015069, 20.400743)
Redshift:
Type:
See object 2025gzz
,
2025hhb
RA, DEC:12:49:44.794, +43:28:58.52
(192.436642, 43.482921)
Redshift:
Type:
See object 2025hhb
,
2025hku
RA, DEC:16:00:41.922, +17:21:00.10
(240.174674, 17.350027)
Redshift:
Type:
See object 2025hku
,
2025hli
RA, DEC:13:19:27.575, +15:36:21.69
(199.864894, 15.606026)
Redshift:
Type:
See object 2025hli
,
2025hmo
RA, DEC:15:16:10.885, +52:28:03.85
(229.045353, 52.467735)
Redshift:0.092
Type:SN Ia
See object 2025hmo
,
2025hkd
RA, DEC:12:58:03.001, +09:43:24.05
(194.512505, 9.723347)
Redshift:0.031
Type:SN Ia
See object 2025hkd
,
2025hmp
RA, DEC:11:10:23.567, +10:24:05.14
(167.598195, 10.401427)
Redshift:
Type:
See object 2025hmp
,
2025hmx
RA, DEC:12:27:38.416, +43:05:18.93
(186.910065, 43.088592)
Redshift:
Type:
See object 2025hmx
,
2025hmy
RA, DEC:18:24:07.152, +37:06:44.25
(276.029800, 37.112293)
Redshift:
Type:
See object 2025hmy
,
2025hvq
RA, DEC:11:31:26.531, +15:43:39.55
(172.860544, 15.727652)
Redshift:
Type:
See object 2025hvq
,
2025hxz
RA, DEC:13:35:01.600, +28:35:53.59
(203.756668, 28.598219)
Redshift:
Type:
See object 2025hxz
,
2025hyf
RA, DEC:16:10:58.797, +27:03:46.96
(242.744987, 27.063044)
Redshift:
Type:
See object 2025hyf
,
2025hym
RA, DEC:14:35:25.751, +26:40:15.36
(218.857297, 26.670933)
Redshift:
Type:
See object 2025hym
,
2025bbm
RA, DEC:02:27:51.037, +49:28:33.27
(36.962653, 49.475908)
Redshift:
Type:
See object 2025bbm
,
2025hdm
RA, DEC:16:00:49.295, +28:17:10.98
(240.205397, 28.286382)
Redshift:
Type:
See object 2025hdm
,
2025hgx
RA, DEC:16:29:52.092, +27:57:19.94
(247.467049, 27.955540)
Redshift:
Type:
See object 2025hgx
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Resear…
AstroNote 2025-122
Type: Object/s-Data/Analysis
Released: 2025-04-22 14:08:44
IC-250421A: LAST optical observations of the IceCube neutrino candidate
S. Garrappa (WIS), R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS), E. O. Ofek (WIS), S. Ben-Ami (WIS), D. Po…
Keywords: Neutrinos, Supernova, Transient, Surveys
Related Objects:
2025cbj
RA, DEC:15:59:40.061, +27:06:40.85
(239.916919, 27.111348)
Redshift:0.0675
Type:SN IIn
See object 2025cbj
We report observations of the astrophysical neutrino candidate IC-250421A with the Large Array Survey Telescope (LAST). We cover part of the 90%-footprint neutrino localization and find ~60-days old …
AstroNote 2025-120
Type: Object/s-Data/Analysis
Released: 2025-04-18 00:00:01
ZTF discovery of a re-brightening or new flaring event towards AT 2023uqm / ZTF23abikzfr (z = 0.238)
A. Munoz-Arancibia (MAS/CMM), on behalf of the ALeRCE broker
Source Group: ZTF
Keywords: Transient, AGN
Related Objects:
2023uqm [ZTF23abikzfr]
RA, DEC:23:10:39.016, +34:54:11.01
(347.662566, 34.903057)
Redshift:0.238
Type:AGN
See object 2023uqm [ZTF23abikzfr]
Related Notes:
2023-290
2025-1202023-11-05 12:26:35
Title: ePESSTO+ spectroscopic classification of optical transients
Authors: P. Ramsden (QUB/Birmingham), A. Aamer, T. Moore (QUB), M. F…
Source Group: ePESSTO+
We report on a re-brightening or new flaring event towards the position of AT 2023uqm / ZTF23abikzfr on ZTF light curves, 544 days after discovery. These events lie towards the center of galaxy SDSS …
AstroNote 2025-116
Type: Object/s-Data/Analysis
Released: 2025-04-16 13:08:04
WFST early detection and the bright delayed X-ray flare of TDE2025chm
Shifeng Huang (USTC), Jiazheng Zhu (USTC), Zelin Xu (USTC), Ji-an Jiang (USTC), Yibo Wang (USTC), Ning Jiang (USTC), Ti…
Source Group: WFST
Keywords: TDE, Surveys, X-rays
Related Objects:
2025chm
RA, DEC:07:40:59.037, +16:31:53.62
(115.245986, 16.531562)
Redshift:0.101
Type:TDE
See object 2025chm
Related Notes:
2025-71
2025-1162025-02-28 13:27:57
Title: SLSN and TDE candidates from NEEDLE on Lasair
Authors: X. Sheng, C. R. Angus (QUB), A. Sankar. K (NCU), M. Nicholl…
Source Group: OxQUB
We report the early detection of the TDE2025chm on UTC 02-18, 2025 in the WFST survey as WFST0520gbwr, followed shortly after its optical peak by the detection of a rapid and bright X-ray flare in ou…
AstroNote 2025-114
Type: Object/s-Data/Analysis
Released: 2025-04-15 21:18:21
The first case of radio spectral inversion in an FBOT at late time - AT2024wpp
A.J. Nayana, R. Margutti (UC Berkeley), T. Laskar (Utah), Tim Galvin (CSIRO), E. Wiston, R. Chornock, I. Sfaradi (UC B…
Keywords: Radio
Related Objects:
2024wpp
RA, DEC:02:42:05.499, -16:57:22.90
(40.522912, -16.956360)
Redshift:
Type:SN
See object 2024wpp
Related Notes:
2024-272
2025-1142024-09-28 01:58:12
Title: Observations of the Fast-rising Blue Optical Transient AT2024wpp
Authors: Anna Y. Q. Ho (Cornell), Gokul Srinivasaragavan (Maryland),…
Source Group: ZTF
,
2024-280
2025-1142024-10-03 12:02:21
Title: Keck Cosmic Web Imager host galaxy redshift of AT2024wpp
Authors: Daniel A. Perley (LJMU), Yu-Jing Qin (Caltech), R. Michael …
Source Group: ZTF
,
2024-314
2025-1142024-10-28 17:02:57
Title: Radio Detection of AT2024wpp
Authors: Genevieve Schroeder (Cornell), Anna Y. Q. Ho (Cornell), Dan…
Source Group: ZTF
AstroNote 2025-99
Type: Object/s-Data/Analysis
Released: 2025-03-26 14:09:25
VLA Continued Observations of AT2024aehp
Genevieve Schroeder, Anna Y. Q. Ho (Cornell)
Source Group: ZTF
Keywords: Radio
Related Objects:
2018cow
RA, DEC:16:16:00.220, +22:16:04.91
(244.000917, 22.268031)
Redshift:0.014
Type:SN Ic-BL
See object 2018cow
,
2024aehp [ZTF24abygbss]
RA, DEC:08:21:07.471, +28:44:22.30
(125.281129, 28.739529)
Redshift:
Type:
See object 2024aehp [ZTF24abygbss]
Related Notes:
2025-3
2025-992025-01-04 16:03:55
Title: Multiwavelength Observations of AT2024aehp
Authors: Genevieve Schroeder (Cornell), Ping Chen (WIS), Jesper Soll…
,
2024-386
2025-992024-12-25 01:43:21
Title: ZTF and Gemini Observations of the Fast-fading Luminous Optical Transient AT2024aehp
Authors: Jason Sevilla, Anna Y. Q. Ho (Cornell), Gokul Srinivasaraga…
Source Group: ZTF
We report VLA 6, 10, and 15 GHz detections of AT2024aehp (ZTF24abygbss).
AstroNote 2025-90
Type: Object/s-Data/Analysis
Released: 2025-03-15 16:09:39
Optical non-detection of AT 2025dup
Mateusz Bronikowski (University of Nova Gorica, SL), Eduardo Concepcion (UNG, SL), Jure Japelj (UNG, SL), Matej Mihelci…
Keywords: Optical, Photometry
Related Objects:
2025dup
RA, DEC:10:29:46.330, -38:20:42.70
(157.443042, -38.345194)
Redshift:
Type:
See object 2025dup
We report the optical non-detection of AT2025dup.
AstroNote 2025-86
Type: Object/s-Data/Analysis
Released: 2025-03-13 13:03:40
Photometric follow-up of SN2024adhf/Gaia25aao with BHTOM.space global telescope network
Lukasz Wyrzykowski (U.Warsaw/NCBJ, PL), P.Mikolajczyk (U.Wroclaw/NCBJ, PL), K.Kotysz (U.Wroclaw/U.Warsaw, PL), P.Zielin…
Source Group: BHTOM
Keywords: Photometry, Optical, Time-domain, Transient
Related Objects:
2024adhf [GOTO24iqy]
RA, DEC:11:30:09.310, -13:44:55.61
(172.538792, -13.748781)
Redshift:0.0225
Type:SN Ia
See object 2024adhf [GOTO24iqy]
We report on the optical photometric follow-up of SN2024adhf/Gaia25aao conducted with the BHTOM.space global telescope network.
AstroNote 2025-57
Type: Object/s-Data/Analysis
Released: 2025-02-13 14:09:32
14 early photometric detections from the WFST deep high-cadence ugr-bands survey
Dezheng Meng, Zelin Xu, Ji-an Jiang, Weiyu Wu, Zhengyan Liu, Junhan Zhao, Ziqing Jia (USTC) on behalf of the WFST coll…
Source Group: WFST
Keywords: Time-domain, Surveys, Transient, Supernova, Photometry, Optical
Related Objects:
2024aedt [WFST0454gagb]
RA, DEC:01:51:34.198, +08:15:04.84
(27.892490, 8.251346)
Redshift:0.018413
Type:SN Ia
See object 2024aedt [WFST0454gagb]
,
2024aesi [WFST0455beyw]
RA, DEC:01:03:35.875, +06:34:41.26
(15.899480, 6.578128)
Redshift:
Type:
See object 2024aesi [WFST0455beyw]
,
2024aeeg [WFST0457cgau]
RA, DEC:01:33:06.860, +00:10:32.95
(23.278583, 0.175819)
Redshift:0.0165
Type:SN II
See object 2024aeeg [WFST0457cgau]
,
2024aglo [WFST0458chma]
RA, DEC:01:16:37.852, +05:49:09.99
(19.157715, 5.819440)
Redshift:
Type:
See object 2024aglo [WFST0458chma]
,
2024agpe [WFST0458fjdl]
RA, DEC:01:32:53.473, +01:49:23.46
(23.222803, 1.823184)
Redshift:
Type:
See object 2024agpe [WFST0458fjdl]
,
2024agun [WFST0458ldbh]
RA, DEC:02:04:36.002, +03:46:11.59
(31.150008, 3.769887)
Redshift:
Type:
See object 2024agun [WFST0458ldbh]
,
2025yk [WFST0464hykj]
RA, DEC:01:23:17.074, +01:36:35.57
(20.821143, 1.609880)
Redshift:
Type:
See object 2025yk [WFST0464hykj]
,
2025as [WFST0464nglq]
RA, DEC:02:23:19.395, +02:16:03.43
(35.830812, 2.267619)
Redshift:
Type:
See object 2025as [WFST0464nglq]
,
2025lg [WFST0471buqr]
RA, DEC:01:34:31.044, -00:27:40.13
(23.629348, -0.461147)
Redshift:
Type:
See object 2025lg [WFST0471buqr]
,
2025ya [WFST0475anng]
RA, DEC:01:07:32.387, +02:11:05.40
(16.884947, 2.184832)
Redshift:
Type:
See object 2025ya [WFST0475anng]
,
2025om [WFST0479iwgs]
RA, DEC:01:09:40.397, +00:08:08.06
(17.418319, 0.135571)
Redshift:
Type:
See object 2025om [WFST0479iwgs]
,
2025zm [WFST0483bcmo]
RA, DEC:01:18:52.648, +03:03:33.51
(19.719367, 3.059310)
Redshift:
Type:
See object 2025zm [WFST0483bcmo]
,
2025ayg [WFST0496ceoy]
RA, DEC:01:54:26.118, +08:58:25.29
(28.608823, 8.973690)
Redshift:
Type:
See object 2025ayg [WFST0496ceoy]
,
2024agpp [WFST0458lvcd]
RA, DEC:02:05:27.823, +07:54:18.26
(31.365931, 7.905071)
Redshift:
Type:
See object 2024agpp [WFST0458lvcd]
Related Notes:
2024-230
2025-572024-08-28 14:12:42
Title: 545 supernova candidates from the WFST pilot survey
Authors: Ji-an Jiang (USTC), Zelin Xu (USTC), Weiyu Wu (USTC), Dezhe…
Source Group: WFST
We report early photometric detections from the Wide Field Survey Telescope deep high-cadence ugr-bands survey of 14 previously reported supernova/candidates.
AstroNote 2025-45
Type: Object/s-Data/Analysis
Released: 2025-01-31 14:21:09
Photometric follow-up of AT2025aiv with Horten telescope through BHTOM.space system.
Jan Kare Trandem Qvam (Horten Videregaende Skole, NO), Lukasz Wyrzykowski (U.Warsaw/NCBJ, PL), P.Mikolajczyk (U.Wroclaw…
Source Group: BHTOM
Keywords: Photometry, Transient
Related Objects:
2025aiv [GOTO25tl]
RA, DEC:18:10:07.662, +47:53:39.19
(272.531924, 47.894219)
Redshift:0
Type:CV
See object 2025aiv [GOTO25tl]
We report on the optical photometric follow-up of AT2025aiv conducted with the 0.68m Horten telescope, Horten Videregaende Skole, Norway through BHTOM.space system.
AstroNote 2025-38
Type: Object/s-Data/Analysis
Released: 2025-01-27 14:21:19
DAO Photometric Follow Up of selected Optical Transients (Jan. 2025) cont.
D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025ts
RA, DEC:03:12:12.298, +42:00:32.68
(48.051242, 42.009078)
Redshift:
Type:
See object 2025ts
,
2025tv
RA, DEC:02:34:42.720, +20:24:41.60
(38.677999, 20.411557)
Redshift:
Type:
See object 2025tv
,
2025vw
RA, DEC:07:07:19.255, +45:56:48.57
(106.830230, 45.946825)
Redshift:
Type:
See object 2025vw
,
2025wa
RA, DEC:12:19:46.179, +52:39:04.44
(184.942412, 52.651234)
Redshift:0.1
Type:SN Ia
See object 2025wa
,
2025wv
RA, DEC:10:28:11.490, +41:11:47.42
(157.047876, 41.196505)
Redshift:
Type:
See object 2025wv
,
2025yp
RA, DEC:03:42:44.254, +43:53:01.31
(55.684393, 43.883698)
Redshift:0.027052
Type:SN II
See object 2025yp
,
2025aau
RA, DEC:04:42:30.624, +05:44:32.45
(70.627602, 5.742347)
Redshift:
Type:
See object 2025aau
,
2025abn
RA, DEC:01:59:18.724, +28:15:46.87
(29.828017, 28.263019)
Redshift:
Type:
See object 2025abn
This is a continuation of astronote 2025-37
AstroNote 2025-37
Type: Object/s-Data/Analysis
Released: 2025-01-26 23:01:20
DAO Photometric Follow Up of selected Optical Transients (Jan. 2025)
D. D. Balam (DAO/NRC)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2025oq
RA, DEC:09:04:38.432, +18:28:00.03
(136.160132, 18.466676)
Redshift:0.01133
Type:SN Ic-BL
See object 2025oq
,
2025sn
RA, DEC:14:06:20.333, +48:40:16.22
(211.584722, 48.671171)
Redshift:0.066
Type:SN Ia
See object 2025sn
We present multi-band ( SDSS g&r) photometric follow up observations of selected optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Researc…
AstroNote 2025-31
Type: Object/s-Data/Analysis
Released: 2025-01-23 20:46:29
Photometric follow-up of SN2024gy with BHTOM.space global telescope network
Lukasz Wyrzykowski (U.Warsaw/NCBJ, PL), P.Mikolajczyk (U.Wroclaw/U.Warsaw, PL), K.Kotysz (U.Wroclaw/U.Warsaw, PL), P.Zi…
Source Group: BHTOM
Keywords: Transient, Optical, Photometry, Time-domain
Related Objects:
2024gy
RA, DEC:12:15:51.289, +13:06:56.13
(183.963702, 13.115592)
Redshift:0.001183
Type:SN Ia
See object 2024gy
Related Notes:
2024-6
2025-312024-01-05 20:44:30
Title: SN 2024gy, a type Ia SN in NGC 4216, in the Virgo cluster of galaxies: LCOGT photometry and position
Authors: I. Pérez-Fournon and F. Poidevin (IAC and ULL)
Source Group: SGLF
We report on the optical photometric follow-up of SN2024gy conducted with the BHTOM.space global telescope network.
AstroNote 2025-29
Type: Object/s-Data/Analysis
Released: 2025-01-23 10:52:47
AT 2025aaa / BGEM J091754.07-222055.8: a young SN candidate in NGC 2835
I. Pérez-Fournon, D. Aguado, F. Poidevin (all IAC and ULL), N.C. Sun (UCAS), W. Li, Y. Wang, Z. Niu (all NAOC), J.A. Ac…
Source Group: SGLF
Related Objects:
2025aaa [BGEM J091754.07-222055.8]
RA, DEC:09:17:54.074, -22:20:55.86
(139.475308, -22.348850)
Redshift:
Type:
See object 2025aaa [BGEM J091754.07-222055.8]
We report the detection by BlackGEM of the young SN candidate AT 2025aaa / BGEM J091754.07-222055.8 in NGC 2835 (10 Mpc)
AstroNote 2025-22
Type: Object/s-Data/Analysis
Released: 2025-01-14 21:12:22
Photometric follow-up of SN2024ggi with BHTOM.space global telescope network
Lukasz Wyrzykowski (U.Warsaw/NCBJ, PL), P.Mikolajczyk (U.Wroclaw/U.Warsaw, PL), K.Kotysz (U.Wroclaw/U.Warsaw, PL), P.Zi…
Source Group: BHTOM
Keywords: Photometry, Catalogs, Optical, Time-domain, Transient
Related Objects:
2024ggi [SN 2024ggi]
RA, DEC:11:18:22.087, -32:50:15.27
(169.592031, -32.837576)
Redshift:0.002435
Type:SN II
See object 2024ggi [SN 2024ggi]
Related Notes:
2024-100
2025-222024-04-11 10:52:27
Title: ATLAS24fsk (AT2024ggi): discovery of a nearby candidate SN in NGC 3621 at 7 Mpc with a possible progenitor detection
Authors: S. Srivastav (Oxford), T.-W. Chen (NCU), S. J. Smartt (Oxfo…
Source Group: ATLAS
,
2024-102
2025-222024-04-11 13:08:21
Title: Kinder follow-up observations of AT 2024ggi (ATLAS24fsk)
Authors: T.-W. Chen, A. Sankar.K (both NCUIA), S. Yang (HNAS), S. Sr…
Source Group: Kinder
,
2024-108
2025-222024-04-12 14:40:42
Title: Monitoring of AT 2024ggi (ATLAS24fsk) with Mephisto facilities
Authors: Brajesh Kumar, Xin-Lei Chen, Weikang Lin, Yuan Fang, Guowan…
,
2024-109
2025-222024-04-12 15:22:01
Title: Follow-up observation of SN 2024ggi in NGC 3621
Authors: F. D. Romanov (AAVSO)
Source Group: F. D. Romanov
We report on the optical photometric follow-up of SN2024ggi conducted with the BHTOM.space global telescope network.
AstroNote 2025-20
Type: Object/s-Data/Analysis
Released: 2025-01-14 14:58:18
AMI-LA radio detection of the off-nuclear TDE AT2024tvd
Assaf Horesh (HUJI), Yirmi Bernstein (HUJI), Joe Bright (Oxford), Adam Lang (HUJI), Nadav Shoval (HUJI), Lauren Rhodes …
Keywords: TDE, Radio, Transient
Related Objects:
2024tvd
RA, DEC:17:10:42.585, +28:50:15.11
(257.677437, 28.837530)
Redshift:0.044938
Type:TDE
See object 2024tvd
Related Notes:
2025-13
2025-202025-01-11 03:22:42
Title: AT2024tvd: an off-nuclear tidal disruption event
Authors: Yuhan Yao, Ryan Chornock, Raffaella Margutti (UC Berkeley),…
Source Group: ZTF
,
2025-14
2025-202025-01-11 04:22:06
Title: VLA radio detection of the off-nuclear TDE AT 2024tvd
Authors: Itai Sfaradi, Ryan Chornock (UC Berkeley), Kate D. Alexande…
We report here the radio (15.5 GHz) detection of the off-nuclear tidal disruption event AT 2024tvd by the AMI-LA telescope.
AstroNote 2025-14
Type: Object/s-Data/Analysis
Released: 2025-01-11 04:22:06
VLA radio detection of the off-nuclear TDE AT 2024tvd
Itai Sfaradi, Ryan Chornock (UC Berkeley), Kate D. Alexander (U of Arizona), Raffaella Margutti, Yuhan Yao, A.J. Nayana…
Keywords: TDE, Radio, Transient, Time-domain
Related Objects:
2024tvd
RA, DEC:17:10:42.585, +28:50:15.11
(257.677437, 28.837530)
Redshift:0.044938
Type:TDE
See object 2024tvd
Related Notes:
2025-13
2025-142025-01-11 03:22:42
Title: AT2024tvd: an off-nuclear tidal disruption event
Authors: Yuhan Yao, Ryan Chornock, Raffaella Margutti (UC Berkeley),…
Source Group: ZTF
We report here a 10 GHz detection of the off-nuclear tidal disruption event AT 2024tvd
AstroNote 2025-13
Type: Object/s-Data/Analysis
Released: 2025-01-11 03:23:52
AT2024tvd: an off-nuclear tidal disruption event
Yuhan Yao, Ryan Chornock, Raffaella Margutti (UC Berkeley), Charlotte Ward (Princeton), Itai Sfaradi, Erica Hammerstein…
Source Group: ZTF
Keywords: TDE, Optical, Ultra-Violet, X-rays, Transient, Time-domain
Related Objects:
2024tvd [ZTF22aaigqsr]
RA, DEC:17:10:42.585, +28:50:15.11
(257.677437, 28.837530)
Redshift:0.044938
Type:TDE
See object 2024tvd [ZTF22aaigqsr]
We report that the transient AT2024tvd is an off-nuclear tidal disruption event.
AstroNote 2025-3
Type: Object/s-Data/Analysis
Released: 2025-01-04 16:05:27
Multiwavelength Observations of AT2024aehp
Genevieve Schroeder (Cornell), Ping Chen (WIS), Jesper Sollerman (Stockholm University), Gokul Srinivasaragavan (UMD), …
Keywords: Radio
Related Objects:
2024aehp [ZTF24abygbss]
RA, DEC:08:21:07.471, +28:44:22.30
(125.281129, 28.739529)
Redshift:
Type:
See object 2024aehp [ZTF24abygbss]
,
2018cow
RA, DEC:16:16:00.220, +22:16:04.91
(244.000917, 22.268031)
Redshift:0.014
Type:SN Ic-BL
See object 2018cow
Related Notes:
2024-386
2025-32024-12-25 01:43:21
Title: ZTF and Gemini Observations of the Fast-fading Luminous Optical Transient AT2024aehp
Authors: Jason Sevilla, Anna Y. Q. Ho (Cornell), Gokul Srinivasaraga…
Source Group: ZTF
We report VLA, P60/SEDM, and Swift/XRT observations of AT2024aehp (ZTF24abygbss).
AstroNote 2024-395
Type: Object/s-Data/Analysis
Released: 2024-12-30 16:58:35
Photometric follow-up of SN2024iss with BHTOM.space global telescope network
Lukasz Wyrzykowski (UW/NCBJ), P.Mikolajczyk (UWr/UW), K.Kotysz (UWr/UW), P.Zielinski (UMK), N.Ihanec (UW/ING), F.Dubois…
Source Group: WTFU
Keywords: Supernova, Photometry
Related Objects:
2024iss [Gaia24bot]
RA, DEC:12:59:06.130, +28:48:42.62
(194.775542, 28.811839)
Redshift:0.003334
Type:SN IIb
See object 2024iss [Gaia24bot]
Related Notes:
2024-130
2024-3952024-05-13 21:19:50
Title: AT 2024iss (GOTO24bmf, ZTF24aankvcy): a bright and fast transient in a dwarf galaxy in the Coma cluster of galaxies
Authors: I. Pérez-Fournon, F. Poidevin, D. S. Aguado, J. A. Acosta-P…
Source Group: SGLF
,
2024-128
2024-3952024-05-13 08:43:54
Title: GOTO discovery of a nearby bright transient at 18.7 Mpc.
Authors: D. O'Neill, B.Godson, T. Killestein, R. Kotak, H. Kunc…
Source Group: GOTO
We report on the optical photometric follow-up of SN2024iss conducted with the BHTOM.space global telescope network.
AstroNote 2024-391
Type: Object/s-Data/Analysis
Released: 2024-12-28 17:35:32
DAO Photometric Follow Up of selected Optical Transients (Aug. 2024)
D. D. Balam (DAO/NRC), M. R. Kendurkar (GSNST)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2024rcc
RA, DEC:23:30:11.207, +18:26:12.54
(352.546694, 18.436817)
Redshift:0.14
Type:SN Ia-91T-like
See object 2024rcc
,
2024rjb
RA, DEC:20:06:20.137, +22:00:55.73
(301.583904, 22.015479)
Redshift:
Type:
See object 2024rjb
,
2024rjs
RA, DEC:18:10:44.307, +37:01:42.94
(272.684614, 37.028594)
Redshift:
Type:
See object 2024rjs
,
2024rjw
RA, DEC:21:03:10.107, +20:45:02.58
(315.792112, 20.750717)
Redshift:0.02
Type:SN Ic
See object 2024rjw
,
2024rke
RA, DEC:22:13:50.047, +06:51:46.96
(333.458529, 6.863044)
Redshift:0.06
Type:SN Ia
See object 2024rke
,
2024rlv
RA, DEC:23:32:52.065, +34:38:22.45
(353.216939, 34.639570)
Redshift:
Type:
See object 2024rlv
,
2024rlw
RA, DEC:20:46:48.130, +13:23:54.14
(311.700543, 13.398371)
Redshift:
Type:
See object 2024rlw
,
2024rnj
RA, DEC:21:29:14.647, +18:03:58.88
(322.311029, 18.066355)
Redshift:
Type:
See object 2024rnj
We present multi-band ( SDSS g&r) photometric follow up observations of selected optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Researc…
AstroNote 2024-388
Type: Object/s-Data/Analysis
Released: 2024-12-25 23:02:03
Las Cumbres Observatory multi-band photometry of the Nova AT 2024aeql in Centaurus A (NGC 5128)
B. Armas-Chinea, F. Dobrindt, P. Escudero-Coca, G. Fernández-Rodríguez, Á. García Lozano, A. Huertas Ferrer, C. Méndez-…
Source Group: ULL-ASTRO-MASTER
Keywords: Nova, Transient, Optical
Related Objects:
2024aeql [BGEM J132515.39-425833.7]
RA, DEC:13:25:15.395, -42:58:33.75
(201.314146, -42.976042)
Redshift:0.002
Type:Nova
See object 2024aeql [BGEM J132515.39-425833.7]
Related Notes:
2024-381
2024-3882024-12-23 14:07:10
Title: Discovery of BGEM J132515.39-425833.7 / AT 2024aeql : Nova or early SN in Centaurus A / NGC5128
Authors: Simo Scaringi (Durham), Gavin Ramsay (Armagh), Hugo Tranin …
Source Group: BlackGEM
,
2024-383
2024-3882024-12-24 09:01:20
Title: ePESSTO+ spectroscopic classification of optical transients
Authors: C. Vassallo, N. Koivisto, T. Kravtsov, C. Humina, N. Pyykk…
Source Group: ePESSTO+
We report Las Cumbres Observatory multi-band photometry of the Nova AT 2024aeql (BGEM J132515.39-425833.7, GOTO24jhz) in Centaurus A (NGC 5128)
AstroNote 2024-386
Type: Object/s-Data/Analysis
Released: 2024-12-25 01:43:21
ZTF and Gemini Observations of the Fast-fading Luminous Optical Transient AT2024aehp
Jason Sevilla, Anna Y. Q. Ho (Cornell), Gokul Srinivasaragavan (UMD)
Source Group: ZTF
Keywords: Transient, Spectroscopy, Optical, Time-domain, Photometry
Related Objects:
2024aehp [ZTF24abygbss]
RA, DEC:08:21:07.471, +28:44:22.30
(125.281129, 28.739529)
Redshift:
Type:
See object 2024aehp [ZTF24abygbss]
We report ZTF observations of a rapidly fading transient, AT2024aehp (ZTF24abygbss). The spectroscopic redshift of the host galaxy is z = 0.170, implying a peak absolute magnitude of M_g ~ -20.5 AB m…
AstroNote 2024-377
Type: Object/s-Data/Analysis
Released: 2024-12-18 20:48:57
DAO Photometric Follow Up of selected Optical Transients (May/June 2024)
D. D. Balam (DAO/NRC), M. R. Kendurkar (GSNST)
Source Group: DAO_OTS
Keywords: Photometry
Related Objects:
2024iks
RA, DEC:12:41:34.304, +01:04:23.05
(190.392932, 1.073068)
Redshift:
Type:
See object 2024iks
,
2024ikx
RA, DEC:13:09:49.610, +11:24:39.89
(197.456708, 11.411081)
Redshift:0.025107
Type:SN II
See object 2024ikx
,
2024ila
RA, DEC:15:36:51.840, +06:29:57.50
(234.216002, 6.499306)
Redshift:
Type:
See object 2024ila
,
2024ilz
RA, DEC:14:50:11.738, +11:30:08.24
(222.548907, 11.502289)
Redshift:
Type:
See object 2024ilz
,
2024imm
RA, DEC:13:59:10.759, +27:59:19.19
(209.794829, 27.988665)
Redshift:
Type:
See object 2024imm
,
2024inv
RA, DEC:11:06:32.160, +11:22:42.38
(166.634000, 11.378439)
Redshift:0.004528
Type:SN Ia
See object 2024inv
,
2024ioy
RA, DEC:16:39:44.595, +39:38:12.13
(249.935814, 39.636702)
Redshift:
Type:
See object 2024ioy
,
2024ipf
RA, DEC:17:49:21.683, +14:58:34.06
(267.340347, 14.976126)
Redshift:0.052
Type:SN Ia
See object 2024ipf
,
2024iph
RA, DEC:15:06:20.715, +30:45:14.12
(226.586312, 30.753921)
Redshift:
Type:
See object 2024iph
,
2024ipj
RA, DEC:14:23:37.784, +08:33:03.92
(215.907432, 8.551089)
Redshift:
Type:
See object 2024ipj
,
2024ipn
RA, DEC:12:18:07.504, +35:25:30.52
(184.531266, 35.425145)
Redshift:
Type:
See object 2024ipn
,
2024jps
RA, DEC:15:37:49.054, +12:19:03.89
(234.454391, 12.317748)
Redshift:
Type:
See object 2024jps
,
2024kce
RA, DEC:12:29:49.560, +08:12:48.49
(187.456500, 8.213469)
Redshift:0.003
Type:SN Ia-pec
See object 2024kce
,
2024kcn
RA, DEC:13:41:15.380, +14:06:44.85
(205.314085, 14.112459)
Redshift:
Type:
See object 2024kcn
,
2024kdn
RA, DEC:18:56:12.742, +36:02:00.99
(284.053092, 36.033608)
Redshift:
Type:
See object 2024kdn
,
2024keb
RA, DEC:15:10:32.350, +13:31:45.95
(227.634792, 13.529431)
Redshift:0.07463
Type:SN Ia
See object 2024keb
,
2024kfj
RA, DEC:18:40:30.300, +12:27:56.80
(280.126250, 12.465779)
Redshift:
Type:
See object 2024kfj
,
2024kjm
RA, DEC:16:51:51.037, +69:17:28.16
(252.962655, 69.291155)
Redshift:
Type:
See object 2024kjm
,
2024kkj
RA, DEC:15:55:14.997, +33:22:18.04
(238.812489, 33.371677)
Redshift:
Type:
See object 2024kkj
,
2024kxn
RA, DEC:18:16:08.560, +47:22:19.16
(274.035667, 47.371989)
Redshift:0.051
Type:SN Ia
See object 2024kxn
,
2024ldo
RA, DEC:13:11:39.293, +62:38:08.79
(197.913721, 62.635775)
Redshift:
Type:
See object 2024ldo
,
2024lfb
RA, DEC:19:29:58.915, +39:13:54.90
(292.495480, 39.231916)
Redshift:
Type:
See object 2024lfb
,
2024ljb
RA, DEC:13:53:51.025, +38:08:28.21
(208.462604, 38.141169)
Redshift:0.0343980007
Type:SN Ia
See object 2024ljb
,
2024lnn
RA, DEC:16:30:16.796, +52:15:49.59
(247.569981, 52.263776)
Redshift:
Type:
See object 2024lnn
,
2024lnq
RA, DEC:14:50:43.751, +69:33:16.48
(222.682295, 69.554577)
Redshift:0.48
Type:SN
See object 2024lnq
,
2024lwu
RA, DEC:20:02:37.030, +39:47:00.20
(300.654292, 39.783389)
Redshift:
Type:
See object 2024lwu
We present multi-band ( SDSS g&r) photometric follow up observations of selected optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Researc…

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