AstroNotes

Here we report the ATLAS discovery of the transient ATLAS26afg (AT2026ob) in galaxy NGC 0134 at magnitude m_o = 18.26 +/- 0.13. At a distance of 18 Mpc, the transient was discovered on MJD = 61051.2…

We report 4 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

We report the possible detection of the TDE 2025CYH with the radio telescope AMI-LA at 15.5 GHz.

Here we report the ATLAS discovery of the transient ATLAS25qko (AT2025ajmj) in galaxy IC 4366 at magnitude m_o = 18.06 +/- 0.14. At a distance of 68 Mpc, the transient was discovered on MJD = 61038.3…

We report the optical spectroscopic and Swift observations of AT 2025afsj and tentatively classify it as a TDE in AGN.

We report Keck/LRIS spectroscopy of SN 2025anhj, a Type Ibn supernova discovered by the Zwicky Transient Facility (ZTF25acipmxl). The classification is based on weak He I P-Cygni features, residual C…

Here we report the ATLAS discovery of the transient ATLAS25qaf (AT2025ahuw) in galaxy KK 2852 at magnitude m_c = 18.16 +/- 0.11. At a distance of 49 Mpc, the transient was discovered on MJD = 61029…

We report the discovery of a highly reddened transient in Messier 108 (9 Mpc) and classify it as a low luminosity Type Iax. With Gemini/GMOS spectroscopy, we measure low expansion velocities (v

We report 3 hostless candidates selected by the ELEPHANT pipeline.

We report 1 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

We report the optical spectroscopic and Swift observations of TDE 2025afvr which is still in rising phase in optical band.

We report two possible TDEs identified by our photometric classifier POTICA (Photometric Optical TDE Identification and Classification Annotator), currently in its testing phase. The lightcurve of …

We present a NOT/ALFOSC optical spectrum of the rising optical transient AT 2025afvr. The spectrum is blue and featureless. There are no evident host galaxy lines and no spectroscopic redshift for th…

We report 20 supernova candidates with magnitudes down to ~30.4 AB mag collected from the NGDEEP (PI: Finkelstein; PID: 2079) survey data. They are hosted by galaxies with redshifts ranging from z=0…

We report 4 supernova candidates with magnitudes down to ~30.2 AB mag in the GOODS-S field hosted by galaxies with redshifts z=0.342, z~2.55, z~2.92, and one of unknown redshift. We found these sourc…

Here we report the ATLAS discovery of the transient ATLAS25pss (AT2025agwd) in galaxy ESO 507- G 037 at magnitude m_o = 18.49 +/- 0.18. At a distance of 44 Mpc, the transient was discovered on MJD =…

We report 2 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

Here we report the ATLAS discovery of the transient ATLAS25plg (AT2025aggl) in galaxy UGC 03766 at magnitude m_o = 18.72 +/- 0.18. At a distance of 81 Mpc, the transient was discovered on MJD = 6101…

We report ZTF, Liverpool Telescope, Palomar P200 and Swift observations of 2025afcr/ZTF25acemaph. We find it to be a bright (g < 18) pre-maximum SLSN-I at a redshift of z = 0.1335 in a compact star-f…

We report the classifications of 3 transients, including 1 Type II and 2 Type Ia. We also upload the followup spectra of 10 transients.

We report a fast rising transient WFST251129euxe (AT 2025afih) discovered by the 2.5-m Wide Field Survey Telescope (WFST) through the Deep High-cadence ugr-band Survey.

CFHT r'-band observations reveal another transient point source near the four known images of SN 2025wny, possibly a fifth strongly lensed SN image.

We report on a re-brightening or second transient event towards the position of AT 2024uuw in ATLAS photometry light curves, 436 days after initial discovery in GOTO. The second flare is approximatel…

We report upper-limits obtained at 200 GeV - 50 TeV with the MAGIC and LST-1 telescopes of the nearby TDE 2025aarm.

We report the observations of AT 2025zmb/ZTF25abuovxv, which we tentatively classify as a candidate optically overluminous featureless TDE, following its spectroscopic observations with the Kast spec…

Here we report the ATLAS discovery of the transient ATLAS25omp (AT2025aecv) in galaxy NGC 4441 at magnitude m_w = 17.42 +/- 0.04. At a distance of 39 Mpc, the transient was discovered on MJD = 60997…

We report the identification of optical transient ZTF25absjioz/AT 2018mqa as a possible tidal disruption event (TDE). The transient is located in the nucleus of a nearby galaxy at 63 Mpc, with a low …

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…

We report 5 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

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.

Here we report the ATLAS discovery of the transient ATLAS25nsq (SN2025acfm) in galaxy IC1722 at magnitude m_o = 18.40 +/- 0.16. At a distance of 54 Mpc, the transient was discovered on MJD = 60981…

Based on multiple photometric peaks and a non-nebular Type II spectrum we suggest that SN 2024qiw is an iPTF14hls-like supernova, now ~500-600 days from explosion.

We report the classification of AT 2025ukn as an Extreme Nuclear Transient (ENT), given AGN-like features in the spectrum and a long rise to ~-22 magnitude.

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…

We report the classification of optical transient ZTF25abxvhmk/AT 2025abcr as a likely offnuclear tidal disruption event (TDE). Subsequent follow-up suggests a probable TDE-H-He classification. The l…

We report the detection of X-ray emission coincident with the nearby tidal disruption event TDE 2025aarm

We report the detection of radio emission coincident with the nearby tidal disruption event TDE 2025aarm.

We report 3 SLSN and 1 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

We report radio upper limits obtained at 5 and 8 GHz with the Allen Telescope Array for the nearby TDE 2025aarm.

We report 3 SLSN and 2 TDE candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these even…

We report the classification of AT 2025aarm as a nearby pre-peak H+He TDE.

We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting. In this sample, a typical rise time is longer than 30 days and a typical peak r-band m…

We spectroscopically classify the optical transient AT2025aapf/ZTF25abxcnsf as a TDE-featureless at redshift z=0.180 using Keck-I/LRIS.

Here we report the ATLAS discovery of the transient ATLAS25nji (AT2025absv) in galaxy NGC 1578 at magnitude m_c = 18.82 +/- 0.13. At a distance of 86 Mpc, the transient was discovered on MJD = 60971…

We report 2 SLSN and 1 TDE, and 1 uncertain candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classificat…

We report on Keck/LRIS spectroscopy of the brightest image of SN2025wny (ZTF25abnjznp), a transient showing multiple images previously identified by the Zwicky Transient Facility and the Liverpool Te…

We report the classification of four optical transients (3 Type Ia SNe and one Type IIP).

We report the classification of four optical transients (3 Type Ia SNe and an AGN outburst). We additionally report a new spectrum for SN 2025zwn, consistent with a SN IIb.