676 datasets found

We catalogue the 443 bright supernovae (SNe) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in 2018-2020 along with the 519 SNe recovered by ASAS-SN and 516...

We present infant-phase observations of the broad-lined Type Ic supernova (SN) 2020lao, including optical spectroscopy beginning within about 48 hours of the inferred explosion...

The origins of astrophysical high-energy neutrino flux remain uncertain. Core-collapse supernovae with strong CSM interaction (Type IIn a.k.a. SNe IIn) are compelling candidates...

Nebular-phase observations of peculiar Type Ia supernovae (SNe Ia) provide important constraints on progenitor scenarios and explosion dynamics for both these rare SNe and the...

The direct detection of core-collapse supernova (SN) progenitor stars is a powerful way of probing the last stages of stellar evolution. However, detections in archival Hubble...

Type Ibn supernovae (SNe) are characterized by narrow helium (He i) lines from photons produced by the unshocked circumstellar material (CSM). About 80 SNe Ibn have been...

The extent of envelope stripping in the progenitor stars is directly reflected in the diversity of spectral features observed in stripped-envelope supernovae (SESNe). Through...

We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining Type Ia supernova (SN Ia) in NGC 1784 (D~31Mpc), from <1 to...

Supernovae (SNe) are believed to be the dominant sources of dust production at high redshift. However, the reverse shock generated by the interaction of the SN forward shock and...

The long GRB 180728A, at a redshift of z=0.1171, stands out due to its high isotropic energy of E_gamma,iso_~2.5x10^51^erg, in contrast with most events at redshift z<0.2. We...

The Zwicky Transient Facility Data Release 2 (ZTF DR2) includes a total of 3628 Type Ia supernovae (SNe Ia), providing the largest and most complete sample of spectroscopically...

Supernovae (SNe) IIn are terminal explosions of massive stars that are surrounded by a dense circumstellar medium (CSM). Among SNe IIn, a notable subset is the SNe 2009ip-like,...

Type Ia supernovae (SNe Ia) provide the most robust means of measuring extragalactic distances.While most of the effort has focused on increasing the number of SNe Ia observed...

SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and...

We present a photometric and spectroscopic analysis of the Type Ibn supernova (SN) 2024acyl. It rises to an absolute magnitude peak of M_o=-17.58+/-0.15mag in 10.6 days, and...

The Zwicky Transient Facility SN Ia Data Release 2 provides a perfect opportunity to perform a thorough search for, and subsequent analysis of, high-velocity components in the...

We present nebular spectroscopy of SN 2020hvf, a Type Ia supernova (SNIa) with an early bump in its light curve. SN 2020hvf shares many spectroscopic and photometric...

SN 2021aefx is a normal Type Ia supernova (SN) showing excess emission and redward color evolution over the first ~2days. We present analyses of this SN using our high-cadence...

Stripped-envelope supernovae (SESNe), including Type IIb, Ib, and Ic supernovae (SNe), originate from the explosions of massive stars whose outer envelopes have been largely...

Type Ia supernovae (SNe Ia) are among the most precise cosmological distance indicators used to study the expansion history of the Universe. The vast increase of SN Ia data due...