Showing results 1 to 18 out of 18
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 2024-364
Type: Object/s-Data/Analysis
Released: 2024-12-11 17:14:12
SWIFT X-ray and UVOT Observations of the Fast Optical Transient AT2024adec
Jason Sevilla (Cornell), Yi-Jung Yang (NCU), Michael Coughlin (University of Minnesota), Anna Ho (Cornell)
Source Group: ZTF
Keywords: Transient, Supernova, X-rays, Ultra-Violet
Related Objects:
2024adec
RA, DEC:12:56:57.027, +77:10:26.82
(194.237614, 77.174117)
Redshift:0.035
Type:SN IIb
See object 2024adec
We report SWIFT XRT and UVOT observations of a rapidly evolving transient, AT2024adec (ZTF24abvevzs).
AstroNote 2024-261
Type: Announcement-Campaign/Survey
Released: 2024-09-16 19:08:19
Findings of ZTF Flexible Weekends Experiment
Wynn Jacobson-Galán (Caltech), Nabeel Rehemtulla, Adam Miller (NU, CIERA), Yu-Jing Qin (Caltech), Steve Schulze (CIERA)…
Source Group: ZTF
Keywords: Transient, Spectroscopy, Surveys, Ultra-Violet, Time-domain, Supernova
Related Objects:
2024ryv [ZTF24abbenwl]
RA, DEC:00:25:29.960, +20:14:34.57
(6.374831, 20.242937)
Redshift:0.015
Type:SN IIP
See object 2024ryv [ZTF24abbenwl]
We present the findings of the first ZTF Flexible Weekends experiment. We report 101 transients discovered during the three nights (August 10 - 12 2024 UTC) and that SN 2024ryv was selected for HST U…
AstroNote 2024-202
Type: Object/s-Data/Analysis
Released: 2024-07-22 15:39:37
Continued Observations of AT2024kmq (ZTF24aapvieu): Optical, X-ray, and Radio Detections
Anna Y. Q. Ho (Cornell), Yuhan Yao (UC Berkeley), Igor Andreoni (UMD/JSI), Daniel Perley, Jacob Wise, K-Ryan Hinds, Ale…
Source Group: ZTF
Keywords: Radio, X-rays, Ultra-Violet, Optical, Photometry, Spectroscopy
Related Objects:
2024kmq
RA, DEC:12:02:37.273, +35:23:35.22
(180.655305, 35.393116)
Redshift:
Type:
See object 2024kmq
,
2022cmc
RA, DEC:13:34:43.207, +33:13:00.54
(203.680029, 33.216817)
Redshift:
Type:
See object 2022cmc
Related Notes:
2024-155
2024-2022024-06-13 22:23:51
Title: Photometry and Spectroscopy of the Fast Optical Transient AT2024kmq
Authors: Jason Sevilla, Jada L. Vail (Cornell), Chang Liu (Northwest…
Source Group: ZTF
We present luminous optical, UV, X-ray, and radio detections of the fast transient AT2024kmq (z=0.192). The transient is spatially coincident with the nucleus of an early-type galaxy, and we consider…
AstroNote 2024-177
Type: Object/s-Discovery/Classification
Released: 2024-07-02 16:45:24
Classification of AT 2024lhc as a Tidal Disruption Event with Luminous and Variable X-ray Emission
Yuhan Yao, Ryan Chornock, Xinze Guo, Natalie LeBaron, Raffaella Margutti (UC Berkeley), Vikram Ravi, Jean Somalwar (Cal…
Source Group: ZTF
Keywords: TDE, Black Hole, X-rays, Optical, Ultra-Violet
Related Objects:
2024lhc [ZTF24aaoxmyb]
RA, DEC:16:50:54.181, +32:52:36.21
(252.725754, 32.876725)
Redshift:0.2045
Type:TDE
See object 2024lhc [ZTF24aaoxmyb]
We report the classification of the optical transient ZTF24aaoxmyb/AT 2024lhc as a likely tidal disruption event.
AstroNote 2023-250
Type: Object/s-Discovery/Classification
Released: 2023-09-18 16:22:16
AT2023mfm: a Tidal Disruption Event at z=0.087
Ryan Chornock, Yuhan Yao, Natalie LeBaron (UC Berkeley), Huei Sears (Northwestern), Matt Nicholl (QUB), Evan Ridley (Bi…
Keywords: TDE, Time-domain, Optical, Ultra-Violet
Related Objects:
2023mfm [ZTF23aapyidj]
RA, DEC:21:37:27.961, -04:20:43.16
(324.366505, -4.345322)
Redshift:0.087
Type:TDE
See object 2023mfm [ZTF23aapyidj]
We report the classification of the optical transient ZTF23aapyidj/AT2023mfm as a tidal disruption event (TDE) at z=0.087.
AstroNote 2023-102
Type: Object/s-Discovery/Classification
Released: 2023-04-28 22:19:41
AT2023cvb: a Tidal Disruption Event at z=0.071
Yuhan Yao (Caltech), Yujing Qin (Caltech), Muryel Guolo (JHU)
Source Group: ZTF
Keywords: TDE, Time-domain, Optical, Ultra-Violet, Black Hole
Related Objects:
2023cvb [ZTF23aadcbay]
RA, DEC:19:14:25.680, +41:40:09.28
(288.607000, 41.669243)
Redshift:0.071
Type:TDE
See object 2023cvb [ZTF23aadcbay]
We classify AT2023cvb as a tidal disruption event at z=0.071.
AstroNote 2022-223
Type: Object/s-Discovery/Classification
Released: 2022-10-24 19:33:20
AT2022lri/ZTF22abajudi: ZTF and Swift Discovery of a Tidal Disruption Event at z=0.032 with Bright X-ray Emission
Yuhan Yao, Jean Somalwar, Robert Stein (Caltech), Suvi Gezari (STScI), Erica Hammerstein (UMD), Sjoert van Velzen (Leid…
Source Group: ZTF
Keywords: TDE, X-rays, Ultra-Violet, Optical
Related Objects:
2022lri [ZTF22abajudi]
RA, DEC:02:20:08.009, -22:43:15.42
(35.033371, -22.720950)
Redshift:0.03275
Type:TDE
See object 2022lri [ZTF22abajudi]
We report the discovery and classification of AT2022lri/ZTF22abajudi, a UV and X-ray bright tidal disruption event in a galaxy at z=0.032.
AstroNote 2022-99
Type: Object/s-Discovery/Classification
Released: 2022-05-02 17:27:42
ZTF20aahmtso/AT2022gri: ZTF discovery of a UV-bright tidal disruption event
Yuhan Yao (Caltech), Suvi Gezari (STScI), Sjoert van Velzen (Leiden), Erica Hammerstein (UMD), Jean Somalwar (Caltech)
Source Group: ZTF
Keywords: TDE, Ultra-Violet, Optical
Related Objects:
2022gri [ZTF20aahmtso]
RA, DEC:07:18:20.778, +33:59:41.58
(109.586576, 33.994882)
Redshift:0.028
Type:TDE
See object 2022gri [ZTF20aahmtso]
We report the classification of ZTF20aahmtso/AT2022gri, a UV-bright tidal disruption event in a galaxy at z=0.028.
AstroNote 2022-50
Type: Object/s-Discovery/Classification
Released: 2022-02-24 08:54:40
AT 2022bdw as a Possible Tidal Disruption Event
Iair Arcavi, Yael Dgany (Tel Aviv University), Craig Pellegrino (Las Cumbres / UCSB)
Source Group: StarDestroyers
Keywords: Transient, TDE, Supernova, Ultra-Violet, Optical
Related Objects:
2022bdw [ZTF22aaahtqz]
RA, DEC:08:25:10.360, +18:34:57.50
(126.293167, 18.582639)
Redshift:0.03782
Type:TDE
See object 2022bdw [ZTF22aaahtqz]
We report the classification of AT 2022bdw as a possible tidal disruption event, but can not rule out an unusual SN II classification.
AstroNote 2022-47
Type: Object/s-Discovery/Classification
Released: 2022-02-21 21:24:09
AT 2022dbl is a Nearby Rising Tidal Disruption Event in an E+A Galaxy
Iair Arcavi, Yael Dgany, Lydia Makrygianni (Tel Aviv University), Craig Pellegrino (Las Cumbres / UCSB)
Source Group: StarDestroyers
Keywords: Transient, Ultra-Violet, Optical, TDE
Related Objects:
2022dbl [ASASSN-22ci]
RA, DEC:12:20:45.010, +49:33:04.68
(185.187540, 49.551300)
Redshift:0.0284
Type:TDE
See object 2022dbl [ASASSN-22ci]
,
2019ahk [ASASSN-19bt]
RA, DEC:07:00:11.546, -66:02:24.14
(105.048110, -66.040040)
Redshift:0.0262
Type:TDE
See object 2019ahk [ASASSN-19bt]
We report the classification of AT 2022dbl / ASASSN-22ci (originally reported as AT 2018mac / ZTF18aabdajx) as a TDE.
AstroNote 2021-103
Type: Object/s-Discovery/Classification
Released: 2021-03-26 13:33:55
ZTF21aanxhjv/AT2021ehb: ZTF discovery of a young, UV-bright tidal disruption event
Suvi Gezari (STScI), Erica Hammerstein (UMD), Yuhan Yao (Caltech), Sjoert van Velzen (Leiden), Brad Cenko (NASA/Goddard…
Source Group: ZTF
Keywords: TDE, Transient, Ultra-Violet
Related Objects:
2021ehb [ZTF21aanxhjv]
RA, DEC:03:07:47.806, +40:18:40.57
(46.949190, 40.311268)
Redshift:0.018
Type:TDE
See object 2021ehb [ZTF21aanxhjv]
We report the discovery and classification of ZTF21aanxhjv/AT2021ehb, a young, UV-bright tidal disruption event in a galaxy at z=0.017, still on the rise to peak.
AstroNote 2021-64
Type: Object/s-Data/Analysis
Released: 2021-02-13 11:16:09
Swift observations of ZTF21aakilyd/AT2021csp
Steve Schulze (OKC)
Source Group: ZTF
Keywords: X-rays, Transient, Optical, Ultra-Violet
Related Objects:
2021csp [ZTF21aakilyd]
RA, DEC:14:26:22.114, +05:51:33.18
(216.592143, 5.859216)
Redshift:0.083
Type:SN Icn
See object 2021csp [ZTF21aakilyd]
Related Notes:
2021-62
2021-642021-02-12 16:34:14
Title: ZTF/LT discovery of a fast, luminous blue transient with narrow carbon features
Authors: Daniel Perley (LJMU), Yuhan Yao (Caltech), Steve Schulze (O…
Source Group: ZTF
We report UV/optical and X-ray observations of the fast, luminous blue transient ZTF21aakilyd/AT2021csp.
AstroNote 2020-137
Type: Object/s-Data/Analysis
Released: 2020-07-17 18:47:16
Planned HST observations of SN 2020nxt
Ori D. Fox (STSc), Tamás Szalai, Peter Brown, Griffin Hosseinzadeh, Jennifer Andrews, Thomas Brink, Roger Chevalier, G…
Keywords: Supernova, Ultra-Violet
Related Objects:
2020nxt
RA, DEC:22:37:36.235, +35:00:07.68
(339.400980, 35.002133)
Redshift:
Type:SN Ibn
See object 2020nxt
AstroNote 2020-74
Type: Object/s-Data/Analysis
Released: 2020-04-02 01:43:12
HST Ultra-rapid Observations of SN 2020fqv
Georgios Dimitriadis, David A. Coulter, Ryan J. Foley, Charles D. Kilpatrick, Cesar Rojas-Bravo, Matthew R. Siebert (UC…
Source Group: UCSC
Keywords: Supernova, Ultra-Violet, Spectroscopy
Related Objects:
2020fqv
RA, DEC:12:36:33.260, +11:13:53.87
(189.138583, 11.231631)
Redshift:0.007522
Type:SN IIb
See object 2020fqv
We report ultra-rapid ToO STIS and COS UV observations with the Hubble Space Telescope and Swift UV observations of the young and nearby SN 2020fqv. The first epoch of HST UV spectroscopy is schedule…
AstroNote 2019-106
Type: Object/s-Discovery/Classification
Released: 2019-10-19 09:34:58
Swift observations and spectroscopic classification of OGLE19qem as a Type IIn supernova
M. Gromadzki, N. Ihanec, S. Kozlowski, L. Wyrzykowski (Uni. of Warsaw), I. Arcavi, B. Trakhtenbrot (Tel Aviv Universit…
Keywords: Spectroscopy, Supernova, Optical, Ultra-Violet, X-rays
Related Objects:
2019qem [OGLE19qem]
RA, DEC:06:03:45.010, -64:22:35.94
(90.937542, -64.376650)
Redshift:0.042
Type:SN IIn
See object 2019qem [OGLE19qem]
Here we present Swift observations and spectroscopic classification of OGLE19qem. The object was not detected in X-rays. UVOT colours suggests a temperature around 7000 K, while the spectral features…
AstroNote 2019-101
Type: Object/s-Discovery/Classification
Released: 2019-10-10 03:01:40
Possible Rapidly Evolving Superluminous Blue Transient AT 2019rwd
Dheeraj Pasham (MIT), Iair Arcavi (Tel Aviv University), Jamison Burke (Las Cumbres / UCSB)
Keywords: Transient, Supernova, Photometry, Spectroscopy, Optical, Ultra-Violet, X-rays
Related Objects:
2019rwd [ZTF19acctwpz]
RA, DEC:00:10:45.898, +21:08:20.73
(2.691241, 21.139092)
Redshift:0.017
Type:SN II
See object 2019rwd [ZTF19acctwpz]
We report optical, UV and X-ray data of this rapidly evolving event. The nature of the event can not yet be determined, additional immediate followup is encouraged.
AstroNote 2019-88
Type: Object/s-Discovery/Classification
Released: 2019-09-05 02:52:28
Classification of AT2019meg as a tidal disruption event, evidence for an increasing temperature
Sjoert van Velzen (UMD), Suvi Gezari (UMD), Charlotte Ward (UMD), Sara Frederick (UMD), Erica Hammerstein (UMD), S. Bar…
Keywords: Ultra-Violet, Transient, Black Hole, Time-domain, Spectroscopy, TDE
Related Objects:
2019meg [ZTF19abhhjcc]
RA, DEC:18:45:16.180, +44:26:19.21
(281.317417, 44.438669)
Redshift:
Type:
See object 2019meg [ZTF19abhhjcc]
Related Notes:
2019-59
2019-882019-07-30 15:43:16
Title: C-SNAILS spectra of optical transients
Authors: Matt Nicholl, Phil Short, Andy Lawrence, Nic Ross (Edinburg…
Source Group: C-SNAILS
We classify AT2019meg as a tidal disruption event based on our optical spectra and NUV data from Swift/UVOT. The optical spectrum shows broad Halpha and Hbeta emission and a blue continuum, as well a…

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SN 2023tyk: discovery to spectroscopic classification performed fully automatically
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ATLAS20ktt (AT2020hvp): discovery of a candidate supernova in NGC 6118 (27 Mpc)
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Onset of SN 2023ixf observed over East Asian longitudes
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Released: 2019-12-31
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ePESSTO+ re-classification of AT2019xis as a light echo of SN 1987A in the LMC.
S. Taubenberger (MPA), D. Malesani (DTU Space), G. Terreran (Northwestern), S. J. Smartt (QUB), A. …
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Released: 2020-06-25
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AstroNote 2020-70
Released: 2020-03-30
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Fast Radio Bursts (FRBs) now reported to and distributed via the TNS
O. Yaron, E. Ofek, A. Gal-Yam, A. Sass (Weizmann)

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