AstroNotes

This report includes classifications of a Type la, a Type la-91T-like, 2 Type II's and a blue featureless continuum.

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

The Caltech Summer Undergraduate Research Fellowship (SURF) program reports the classification of an optical transient using P200 NGPS: 1 type Ia supernova.

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…

Starting 2025 July 05 UTC, the Zwicky Transient Facility (ZTF) has begun mapping the accessible science validation footprint of the NSF-DOE Vera C. Rubin Observatory. Every night, this footprint is s…

We report on the optical photometric follow-up of SN 2025bof conducted with a telescope network through BHTOM.space system.

We report observations of various transients using the Kast spectrograph on the Shane 3m telescope at Lick Observatory on the night of 2025-07-20. New classifications were found for four objects, whi…

We report the classification of SN2025qfh, discovered by the Large Array Survey Telescope (LAST) in the northern ULTRASAT deep survey field, as a Type IIn SN.

We report an FBOT candidate WFST250715cmaa (AT 2025sbr) discovered by the WFST survey.

We report photometric and spectroscopic ToO observations of the possible rebrightening of SN 2024pba.

This report includes classifications of 15 Type Ia's, including 1 Ia-peculiar and 1 Ia-CSM, 1 Type Ib, 2 Type Ic, 1 Type IIb and 1 blue continuum.

The BlackGEM consortium announces the discovery of the young transient BGEM J132508.95-430244.3/AT2025rza, 4 arcminutes away from the center of the giant elliptical galaxy Centaurus A. In the latest…

This report includes classifications of 7 Type Ia's and 1 SN (Blue continuum with narrow emission Halpha line).

We report the discovery of a bright optical transient coincident with the position of SN 2024pba, approximately 1.2 mag brighter than SN 2024pba itself.

We report the spectroscopic classification of 2025qhf (ZTF25aaymnha) as a TDE-H-He event at z=0.08. At this distance, 2025qhf has a current luminosity M = -18.88 +/- 0.07 and does not yet appear to h…

The BlackGEM and GOTO collaborations announce the discovery of AT2025rtk in the emission-line galaxy ESO073-027 at z=0.02 at q=18.8/L=19.02. The host galaxy is also the host of AT2024afbw, discovered…

This report includes classifications of two Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a variable star. All classifications were performed based on observations taken during the ESO …

This report includes classifications of five Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a galaxy. All classifications were performed based on observations taken during the ESO Summer…

This report includes classifications of 3 new Type II SNe and a reclassification of a supernova as Type II, which were done through observations taken in the course of the ESO Summer Research Program…

We report 2 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…

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…

This report includes classifications of 5 Type Ia's, 1 Type Ia-91T, 3 Type II's, and 1 Galaxy spectrum.

This report includes classification of one Type Ia 91T-like supernova.

This report includes classifications of a Ia-CSM and a SN Ia.

We report 2 hostless candidates selected by the ELEPHANT pipeline.

We report the discovery of 3 extragalactic transient candidates found in Vera C. Rubin Observatory data released as part of the Rubin Data Preview 1. We also flag 8 sources coincident with transient …

We report 3 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.

As part of the ongoing development of a SLSN identification pipeline for the Fink collaboration, we have identified AT 2021aeuj (ZTF19adcddzk) as being a candidate Extreme Nuclear Transients (ENT).

We report observations of the optical transient AT2025mkn, first detected by ZTF on 2025-05-25 and independently reported by ATLAS. The transient, offset by 0.83″ from a red galaxy at z = 0.42, exhib…

We report on the optical photometric follow-up of SN2025coe with RAPAS, a ProAm network using telescopes equipped with a set of filters meeting Gaia photometric bands.

We report six ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting.

We report the results of a systematic search for transient sources in the first publicly released image from the Vera C. Rubin Observatory’s LSST, using cross-matching with the Transient Name Server …

We present spectroscopy of the fast-rising optical transient AT2025ngt, showing it to be a peculiar Type Ic-BL supernova.

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 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…

This report includes classifications of 7 Type Ia's, 5 Type II's., 1 Type Ic, 2 featurless SN, a CV and a Nova. We encourage followup observations.

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…

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.

We report 6 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 report 3 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 observed SN 2025mvn (ATLAS25fwv) using the 1-meter telescopes in Altay, Xinjiang. Our observations confirm a rapid rise of 0.7 magnitudes in the r-band within 9 hours following the discovery, cons…

We report the classification of SN 2025mqc as a young type Ib supernova in NGC 4653 at ~38 Mpc.

This report includes classifications of 1 Type 1a, 1 Type Ia-91T-like, 1 Type II, and 1 Type Ic. We encourage followup observations.

We report an FBOT candidate WFST0617iqnc (AT 2025mba) discovered by the WFST deep high-cadence ugr-bands survey.

This report includes classifications of 1 Type Ia, 1 Type II, 1 SN and 1 blue and featureless object. We encourage followup observations.

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 5 hostless candidates selected by the ELEPHANT pipeline.

We report a fast rising supernova candidate WFST0614dwbc (AT 2025mbz) discovered by the WFST deep high-cadence ugr-bands survey.

This report includes 10 classifications. There are 7 Type Ia's, 2 Type II's, and 1 blue and featureless object. We encourage followup observations.

This report includes 17 classifications. There are 6 normal Type Ia's, 1 Super-Chandra Type Ia, 3 Ia-91T-like, 3 Type II's, 3 CVs, and 1 blue and featureless object. We encourage followup observation…