AstroNotes

We report 6 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 30 days and a typical peak r-band magnitude is …

This report includes classifications of 2 Type Ia's, 1 Type IIb.

This report includes classifications of 6 Type Ia's, 2 Type II's, a galactic CV and 2 unclear classifications.

This report includes classifications of 2 Type Ia's, 1 Type Ic, and 1 Type II. SN 2021tii is a SN II with a rise time of more than 30 days and a blue spectrum. Follow-up observations are encouraged.

We report 100 SNe detected in the NEOWISE-R 2021 Data Release. We describe a few notable detections, including very bright mid-IR SNe, possible type Ia-CSM and 2010jl-like candidates.

We report VLA, SRG, and Swift observations of the fast-fading luminous transient AT2021tnj.

This report includes classifications of 7 Type Ia's of which one is heavily reddened, 3 Type II's, 1 peculiar Type Ib, 1 Type IIn and a spectrum showing transient-like features. We encourage follow-u…

This report includes classifications of 8 Type Ia's, 2 Type Ic-BL's, 2 Type II's and a Tybe Ib, We encourage follow-up observations.

This report includes classifications of 1 Type Ia. SN2021ujx is a SNIa at ~90 Mpc, now at peak.

This report includes classifications of 7 Type Ia's (2 of which 91T-like), 3 Type II's, 1 Type Ic-BL, and 1 H-poor SN with possible CSM interaction (SN2021tqt). SN2021tyw is a possible infant Type II…

We report the discovery of a fast-fading blue luminous transient at z=0.228.

This report includes classifications of 6 Type Ia's, 2 Type IIn's. SN2021ubz is possibly a 91T-like event. SN2021uds shows an unusually strong He I narrow emission line, similar to a Ibn. SN2021qqp h…

We report the classification of 32 Type II core-collapse supernovae discovered/detected by the iPTF survey during 2016/2017.

We report six ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is 20 days or more and a typical peak r-band magnitude…

We have obtained an optical spectrum of SN 2021tgd, which shows it to be a Type Ia supernova close to maximum light.

We have obtained an optical spectrum of SN 2021szr, which shows it to be a Type Ia supernova.

We report 8 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 50 days and a typical peak r-band magnitude is …

We report the classification of SN 2021mlh as a Type IIP supernova at a redshift z =0.189 using spectra from the Nordic Optical Telescope.

We have obtained an optical spectrum of SN 2021rdc, which shows it to be a young Type II supernova about 10 days after explosion.

We report the spectroscopic classification of AT 2021ryz as a SN Ia.

We report spectroscopic classifications of 8 optical transients, including 3 SNe Ia, 2 SNe II, 2 SNe I b/c and one galactic microlensing event.

Here we report the classification of SN 2021nxq (ZTF21abcpsjy) as a SLSN-I at z=0.15.

We report the rapid (0.5 mag/day) fading of AT2021qyd, a young blue extragalactic transient. The fast evolution, blue colors, and photometric redshift of the host galaxy is reminiscent of shock-cooli…

We are carrying out the "Pan-STARRS Search for Kilonovae" which is a focused search for intrinsically faint transients, or rapidly evolving transients in galaxies that are closer than 200 Mpc in the …

We report spectroscopic classifications of 4 optical transients (2 SNe Ia and 2 SNe II), including a young SN Ia at 15Mpc.

We report the spectroscopic classification of AT 2021pil as a SN Ia and AT 2021qbc as Other (blue and featureless continuum).

We report 6 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is about 50 days and a typical peak r-band magnitude is …

This report includes classifications of 2 supernovae : one Type Ia and one likely SLSN I.

This report includes classifications of 2 Type Ia's, 1 Type II and 1 Type IIn supernova.

We report the DESIRT discovery of the transient T202105181428159m015855 (AT2021mtq) in galaxy CGCG 019-037 at z = 0.05466.

Using VLT/X-shooter we confirm the redshift determination of z=1.5105 (Andreoni et al. 2021 ATel #14641) of the potential host galaxy of the fast X-ray transient XRT210423. The offset and peak lumino…

We report spectral classifications of 10 supernovae from the Zwicky Transient Facility.

This report classifies AT2021ihf as a 2000cx-like SN Ia using spectrum from HET-LRS2.

We report 5 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is >30 days and a typical peak r-band magnitude is 19-20…

We report the updated spectroscopic classification of SN 2021ltk as a SN II.

This report includes classifications of two transients. AT2021lei is spectroscopically similar to type Ic/Ic-BL SNe, but the spectral features appear to be blueshifted based on the tentatively identi…

This report includes two classification spectra. AT2021lmt shows a blue continuum with host galaxy lines at z=0.028. The transient is likely a core-collapse SN, possibly a Type II SN. AT2021lwx shows…

We report the spectroscopic classification of AT 2021ltk as a SN I.

We report spectroscopic classification of AT 2021lwa as a SN Ia.

We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent vetting. In this sample, a typical rise time is >30 days and a typical peak r-band magnitude is 19-20…

We report the detection of luminous X-ray emission from AT2021lfa, with a luminosity typical of long-duration GRB afterglows.

This report includes classifications of 1 type Ia (SN 2021knh) and 1 type Ic-peculiar SN (SN 2021krf). SN 2021krf presents some similarities with the peculiar type-Ic SN 2005ek, as it shows C II line…

We observed AT2021lfa with GMOS-S, and identify z=1.063 as the most probable redshift for this candidate afterglow.

We report the discovery of a fast-fading red transient (a candidate afterglow).

We report the first X-ray detection of SN2020tcw with the Chandra X-ray Observatory (CXO) at 60 days post-discovery.

We are carrying out the "Pan-STARRS Search for Kilonovae" which is a focused search for intrinsically faint transients, or rapidly evolving transients in galaxies which are closer than 200 Mpc in the…

We report the discovery of a highly reddened and rapidly rising Galactic transient by the Palomar Gattini-IR survey. The source PGIR21fjn / AT2021kgk was first detected on UT 2021-04-19 at a magnitud…

Here we report the spectroscopic classification of SN 2021jvp (PS21dhv; Chen et al. AstroNote 2021-124) in galaxy WISEA J142047.66-194744.9. The spectrum shows a good match with SN 1991bg around pea…

we report on behalf of the DESIRT team on three rapidly rising transients.

We report spectroscopic classifications of three SNe-Ia and one 91T-like event.