AstroNotes

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

We tentatively classify SN 2024vcn as a peculiar Type Ia/Ic supernova based on follow-up spectra from the NOT.

We observed the transient and host galaxy of the fast, blue transient AT2024wpp with the Keck Cosmic Web Imager integral field unit spectrograph on the Keck II telescope. The host spectrum shows ...

We report the confirmation of an X-ray detection for the rapidly rising (3 mag/day) and blue optical transient, AT 2024wpp.

We report photometry, spectroscopy, and X-ray observations of a rapidly rising (3 mag/day) and blue optical transient.

We report the identification of fast-fading blue emission in the transient AT2024vsc, as well as a candidate high photo-z host galaxy.

We announce the next ZTF experiment, a wide area search for infant SNe to be conducted from August 9th to August 11th 2024 (PDT). This experiment is scheduled immediately preceding an opportunity f...

We obtained Liverpool Telescope imaging follow-up of AT2024qfm, a fast and blue optical transient. The source has continued to fade rapidly and maintains a blue color, similar to previous AT2018co...

We announce the next experimental survey conducted using the Zwicky Transient Facility (ZTF), set to occur over three consecutive nights starting UT 2024-07-01 at 04:43:34 and ending UT 2024-07-03 ...

We report ZTF observations of a blue rapidly evolving transient, AT2024lhs (ZTF24aascytf). The host galaxy has a Dark Energy Spectroscopic Instrument (DESI) redshift of z = 0.038, implying a peak a...

We introduce BTSbot-nearby, a program for the autonomous follow-up of nearby transients, and report its rapid identification of SNe 2024iss and 2024jlf including photometry and spectroscopy of SN 2...

We announce the next experimental survey with the Zwicky Transient Facility (ZTF), set to occur over three consecutive nights starting on 2024-06-04 at 04:00 UT (18 degree twilight). This experimen...

We report broad-band (BVRIL) polarimetric observations of SN 2024iss with the Liverpool Telescope on 2024 May 14.

We report ZTF photometry and Gemini spectroscopy of a fast-rising blue transient coincident with a high photo-z galaxy.

Here we report the BlackGEM discovery of the transient BGEM J191145.30-570804.0 (AT2024egc) in the galaxy ESO 184-25 at magnitude m_q = 17.39 +/- 0.02. At a distance of 44 Mpc, the transient was di...

We identify a quickly evolving blue transient with a host-galaxy counterpart, AT2023vth. We encourage spectroscopic follow-up observations to determine the redshift of the transient, which is curre...

We report observations of a fast-evolving red transient. AT 2023sva is a likely optical afterglow with a possible GRB counterpart detected by Fermi.

We report observations of a fast-fading red transient. AT2023rdp is a possible optical afterglow, although we note that it is 3 degrees from the Galactic plane.

We report observations of a fast-evolving red transient. AT 2023qxj is a likely optical afterglow with a GRB counterpart discovered by Fermi.

We have obtained SDSS g filter observations of specific optical transients discovered by ZTF (Fremling, C., et al.), Pan-STARRS (Chambers, K.C., et al.) and ATLAS (Tonry, J., et al),. The photo...

We report observations of a hostless, fast-evolving red transient. AT2023jxk is a candidate afterglow with no reported GRB counterpart.

Photometric Follow up Observations of specific transients.

We report the discovery of the fast fading transient ZTF23aagunkc/AT2023ghq.

MeerLICHT detection of a possible young supernova at q_AB = 19.51 in SDSS J121935.03+052048.5 at z=0.07491

We report the discovery of the fast-rising (1 mag/day) red (g-r=2 mag) transient AT2023dbc in the nearby galaxy M 108 (NGC 3556; d=10 Mpc).

We report the fast, blue transient AT2023bbu (ZTF23aabtjjc/ATLAS23bnt), coincident with a faint star-forming galaxy. The rise time of the transient is about two days and it has faded by 2.3 mag ov...

We report the discovery of a hostless, fast-evolving red transient. AT2023avj is likely an afterglow with no reported GRB counterpart.

We report the discovery of the fast optical transient candidate ZTF22acaruqr/AT2022adzb with the Zwicky Transient Facility (ZTF) at coordinates RA = 08:18:03.60; Dec = +55:19:20.43. The transient ...

We announce the Southern Photometric Local Universe Survey Transient Extension Program (STEP), a time-domain survey using nightly griz imaging taken on the robotic 86-cm telescope at Cerro Tololo I...

We report the discovery of the fast, blue optical transient ZTF22aayluxo/AT2022qmt with the Zwicky Transient Facility (ZTF) at coordinates RA = 17:57:23.36; Dec = +56:16:15.21. The transient lumino...

We announce the DECam Extension of the Young Supernova Experiment (YSE), a time-domain survey with DECam on the Cerro Tololo Inter-American Observatory Blanco 4-m telescope. The Young Supernova Exp...

We report the discovery of the fast optical transient ZTF21aaquyjp/AT2021hel with the Zwicky Transient Facility (ZTF). ZTF data at these coordinates are public and the light curve of ZTF21aaquyjp c...

This report includes classifications of 6 Type Ia's and an unclassified object.

We report the discovery of the fast optical transient ZTF20abtxwfx/AT2020sev with the Zwicky Transient Facility (ZTF, Bellm et al. 2019, Graham et al. 2019). ZTF20abtxwfx was found during the scien...

Follow-up observations of AT2020rml with the Liverpool Telescope do not detect the transient candidate, suggesting that it is not a real transient or that it has faded rapidly.

We report the spectroscopic classification of SN 2020qln as a Type Ia supernova.