AstroNotes

Here we report the ATLAS discovery of the transient ATLAS25bok (AT2025boc) in galaxy ESO 356- G 009 at magnitude m_o = 18.33 +/- 0.20. At a distance of 88 Mpc, the transient was discovered on MJD = …

We report 330 supernova candidates discovered by the 2.5-m Wide Field Survey Telescope (WFST) during the first two months of its deep high-cadence ugr-bands survey.

We report early photometric detections from the Wide Field Survey Telescope deep high-cadence ugr-bands survey of 14 previously reported supernova/candidates.

We announce an update to the NASA/IPAC Extragalactic Database Local Volume sample (NED-LVS). The January 2025 version includes new objects ingested by NED and the removal of newly identified non-gala…

This report includes classifications of 4 Type Ia supernovae.

This report includes classifications of 3 Type Ia's, 1 Type II and 1 Type IIb supernova. SN2025bco is an infant Type II, showing strong flash ionisation features. We encourage followup observations.

Here we report the ATLAS discovery of the transient ATLAS25bne (AT2025bcn) in galaxy ESO 325- G 042 at magnitude m_o = 18.07 +/- 0.10. At a distance of 56.6 Mpc, the transient was discovered on MJD…

This report includes classifications of 3 SNe Ia, 1 SN II, 1 SN IIb and 1 Galaxy. AT2025ayw is probably a CV, given the blue spectrum without any broad SN-like features, no obvious host galaxy and lo…

We report the classification of optical transients ZTF24abwsfdk/AT 2024admt and ZTF25aabebve/AT 2024agqx as tidal disruption events (TDEs). Both sources were selected by the tdescore ML classifier (S…

This report includes classifications of 8 Type Ia's, 4 Type II's. and 1 Type Ia 91T-like SN.

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 5 type Ia, 1 Ia-91T and 1 SN II. AT2025atd shows a blue continuum and no obvious broad SN features, and thus its spectral type is unclear. We encourage followu…

We report the rapid, autonomous spectroscopic follow-up of SNe 2025ay, 2025mg, 2025oq, and 2025aml enabled by BTSbot-nearby. In all cases, the spectra triggered by BTSbot-nearby are the earliest know…

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.

We report the classifications of 4 Type Ia's and 1 Type II.

SN 2025adj to be observed with STIS in the UV

The BlackGEM Consortium notes that the recently discovered AT2025ajq is located in the outskirts of the giant elliptical galaxy Centaurus A / NGC 5128

We report observations of 14 transients using the Shane Kast spectrograph at the Lick observatory on the nights of 2025-01-23 and 2025-01-24. New classifications were found for 10 objects, which incl…

This report includes classifications of 3 Type Ia's and 1 young core-collapse SN.

This report includes classifications of 5 Type Ia's and 1 Type Ibn

This is a continuation of astronote 2025-37

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…

This report includes classifications of 3 Type II's and 1 Galactic transient. SN2025et is most likely a 87A-like Type II in a dwarf galaxy.

Here we report the ATLAS discovery of the transient ATLAS25awc (AT2025adj) in galaxy KUG 1458+516 at magnitude m_o = 17.25 +/- 0.04. At a distance of 48 Mpc, the transient was discovered on MJD = 606…

We report 12 ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting. In this sample, a typical rise time is longer than 20 days and a typical peak r-band …

This report includes classifications of 2 Type II's, 1 featureless transient of likely Galactic origin, and one re-classification of a previously blue and featureless transient to a SLSN

We report 4 SLSN and 3 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 on the optical photometric follow-up of SN2024gy conducted with the BHTOM.space global telescope network.

This report includes classifications of 1 faint Type Iax, 1 Type Ic, one possible SLSN and one AGN.

We report the detection by BlackGEM of the young SN candidate AT 2025aaa / BGEM J091754.07-222055.8 in NGC 2835 (10 Mpc)

We report 2 hostless candidates selected by the ELEPHANT pipeline.

BlackGEM discovery of possible young supernova in NGC 1398 with a 1.96 day explosion constraint.

This report includes classifications of 2 Type Ia's and 1 Type II. We encourage followup observations.

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 the most recent outburst of AT2024xuo as a likely interacting SNIIn.

Here we report the ATLAS discovery of the transient ATLAS25akl (AT2025mb) in galaxy NGC 0150 at magnitude m_o = 18.01 +/- 0.14. At a distance of 20 Mpc (redshift independent, from NED), the transien…

We report on the optical photometric follow-up of SN2024ggi conducted with the BHTOM.space global telescope network.

The Young Supernova Experiment (YSE) collaboration reports the results and data products from the completed Gemini Large and Long Program (LP-204) entitled "A Spectroscopically Complete Census of Fai…

We report here the radio (15.5 GHz) detection of the off-nuclear tidal disruption event AT 2024tvd by the AMI-LA telescope.

This report includes classifications of 1 Type IIn and 1 Ib/c. We encourage follow-up observations.

This report includes classifications of 3 Type Ia's. We encourage follow-up observations.

We report a redshift z = 0.176 for the optical counterpart AT 2025kg (the "kangaroo") of the X-ray transient EP250108a. Its luminosity and extremely blue spectral shape suggest an FBOT classification…

This report includes classifications of 3 Type Ia's, 1 Type Ibn and 1 Type II. We encourage follow-up observations.

We have obtained an optical spectrum of SN 2025gc, which shows it to be a Type Ic supernova exhibiting SN 1998bw-like features, about a month after maximum light. The supernova occurred in the same g…

We report here a 10 GHz detection of the off-nuclear tidal disruption event AT 2024tvd

We report that the transient AT2024tvd is an off-nuclear tidal disruption event.

This report includes classifications of 4 Type Ia's. We encourage follow-up observations.

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…