AstroNotes

We classify AT2025kzr as a young flash-ionised supernova.

Here we report the ATLAS discovery of the transient ATLAS25fef (AT2025kzr) in galaxy ESO 501- G 001 at magnitude m_c = 17.00 +/- 0.03. At a distance of 50 Mpc (redshift independent, from NED), the t…

This report includes classifications of 4 Ia's, 2 II's, 3 CV's, 1 Ia-91T, and 1 Ia-CSM. We encourage followup observations.

This report includes classifications of 6 Type Ia's, 1 Type Ia-91bg-like, and 1 Type II. We encourage followup observations.

This report includes classifications of 3 Type Ia's, 2 Type Ia-91T-like, 1 Type II, 1 Type IIn, 1 featureless blue transient, and 1 Type Ic. We encourage followup observations.

We report 1 SLSN candidate from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these events.

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…

We report no radio source within 5 arcseconds of the reported location of supernova SN2025gvs, with a 3-sigma RMS of 99 microJy/beam, consistent with a non-detection at this time.

Here we report the ATLAS discovery of the transient ATLAS25eyd (AT2025kjo) in galaxy IC 1529 at magnitude m_c = 17.77 +/- 0.12. At a distance of 89 Mpc, the transient was discovered on MJD = 60803.14…

Here we report the ATLAS discovery of the transient ATLAS25exz (AT2025kiu) in galaxy 2MASX J01200501-3354009 at magnitude m_o = 17.10 +/- 0.11. At a distance of 46 Mpc, the transient was discovered …

Here we report the ATLAS discovery of the rapidly evolving transient ATLAS25evh (AT2025jzi) in galaxy WISEA J092321.66-202025.8 with current magnitude_o = 18.50 +/- 0.17. The transient was discovered…

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 classify the optical re-brightening event towards AT 2021gqu as a peculiar Type Ia Supernova, based on optical spectroscopy.

Spectral classification of 2 transients and reclassification of 1 transient.

This report includes classifications of 1 Type Ic-BL and 2 Type Ia's. We encourage follow-up observations.

Spectral classification confirmation of 2 transients

Here we report the ATLAS discovery of the transient ATLAS25eqo (AT2025jsh) in galaxy ESO 263- G 014 at magnitude m_o = 18.12 +/- 0.14. At a distance of 75 Mpc, the transient was discovered on MJD = …

Here we report the ATLAS discovery of the transient ATLAS25eqm (AT2025jqz) in galaxy 2MASX J00083403+5530408 at magnitude m_o = 17.98 +/- 0.09. At a distance of 68 Mpc, the transient was discovered o…

We report 5 hostless candidates selected by the ELEPHANT pipeline.

This report includes classifications of 6 Type Ia's and 1 Type II SN. We encourage followup observations.

This report includes classifications of 2 Type II's, 1 Type Ia, 1 AGN, and 1 CV. We encourage follow-up observations.

Here we report the ATLAS discovery of the transient ATLAS25emr (AT2025izc) in galaxy SDSS J092254.16+463203.9 at magnitude m_o = 18.54 +/- 0.11. At a distance of 43 Mpc, the transient was discovered …

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…

Here we present AT2025hbw/ZTF25aajjeon as a high redshift, extraordinarily luminous tidal disruption event (TDE) candidate. With a peak absolute magnitude of g = -23.7 and a redshift of z = 0.628, AT…

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.

We report the spectroscopic detection of a light echo from Type Ia Supernova 2021aefx at ~1200 days post maximum light using the Very Large Telescope.

We report 3 hostless candidates selected by the ELEPHANT pipeline.

We report the classification of optical transients ZTF25aagfhmz (AT2025cyj), ZTF25aaknwwy (AT2025hee), and ZTF25aagrecw (AT2025gmz) as tidal disruption events (TDEs). The sources were selected by the…

Here we report the ATLAS discovery of the transient ATLAS25eca (AT2025ifq) in galaxy 2MASX J10170279-3816235 at magnitude m_o = 17.56 +/- 0.03. At a distance of 72 Mpc, the transient was discovered…

We report 5 hostless candidates selected by the ELEPHANT pipeline.

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…

We report on a re-brightening or second transient event towards the position of AT 2021gqu / ZTF21aapriwm on ZTF light curves, 1494 days after discovery. Both events lie towards SDSS J124000.57+01092…

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 …

We report the multiple mid-infrared flares of AT2023uqm from the NEOWISE survey, two strong flares showing monthly delay followed its optical peaks with a WISE W2 luminosity of 8.7e42 erg/s and 1.6e4…

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 …

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

We report the classification of optical transient ZTF25aajmtzs/AT 2025fak as a likely tidal disruption event (TDE). The source was selected by the tdescore ML classifier (Stein+2024, doi: 10.3847/204…

This report includes classifications of two supernovae, a Type Ia and a superluminous Type IIn. We encourage followup observations.

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…

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…

This report includes classifications of 2 Type Ia's supernovae. We encourage followup observations.

This report includes classifications of two supernovae, a Type Ia and a Type IIn. We encourage followup observations.

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…

This report includes classifications of 7 Type Ia's, 1 Type II, an AGN and a spectrum of a likely SN where strong galaxy emission inhibits a definitive classification. We encourage followup observati…

We have obtained an optical spectrum of SN 2025fwp, which shows it to be a young Type II supernova. The supernova exploded in the same galaxy as the Type Ia supernova SN 2019ako.

This report includes classifications of 4 Type Ia's, 1 Type II, 1 Type Ic and a CV

The BlackGEM Consortium announces the discovery of BGEM J132554.96-430603.3 / AT2025guz, a young (1 day limit), faint (q=20.15) transient located in the outskirts of the nearby giant elliptical galax…

This report includes classifications of 3 Type Ia supernova.

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