466 citations · 4.4k across the 61 of their papers we have counts for
17 papers · 1 filter
Rapid Response Mode observations of GRB 160203A: Looking for fine-structure line variability at z=3.52
G. Pugliese, A. Saccardi, V. D Elia +26
Gamma-ray bursts are the most energetic known explosions. Despite fading rapidly, they allow to measure redshift and important properties of their host-galaxies. We report the phot…
Resolving the explosion of supernova 2023ixf in Messier 101 within its complex circumstellar environment
E. A. Zimmerman, I. Irani, P. Chen +54
Observing a supernova explosion shortly after it occurs can reveal important information about the physics of stellar explosions and the nature of the progenitor stars of supernova…
A UV Resonance Line Echo from a Shell Around a Hydrogen-Poor Superluminous Supernova
R. Lunnan, C. Fransson, P. M. Vreeswijk +21
Hydrogen-poor superluminous supernovae (SLSN-I) are a class of rare and energetic explosions discovered in untargeted transient surveys in the past decade. The progenitor stars and…
Spectra of Hydrogen-Poor Superluminous Supernovae from the Palomar Transient Factory
Robert M. Quimby, Annalisa De Cia, Avishay Gal-Yam +20
Most Type I superluminous supernovae (SLSNe-I) reported to date have been identified by their high peak luminosities and spectra lacking obvious signs of hydrogen. We demonstrate t…
Far-UV HST Spectroscopy of An Unusual Hydrogen Poor Superluminous Supernova: SN2017egm
Lin Yan, D. A. Perley, A. De Cia +4
SN2017egm is the closest (z=0.03) H-poor superluminous supernova (SLSN-I) detected to date, and a rare example of an SLSN-I in a massive and metal-rich galaxy. Here we present the…
Light curves of hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
Annalisa De Cia, A. Gal-Yam, A. Rubin +24
We investigate the light-curve properties of a sample of 26 spectroscopically confirmed hydrogen-poor superluminous supernovae (SLSNe-I) in the Palomar Transient Factory (PTF) surv…
Hydrogen-poor Superluminous Supernovae With Late-time H-alpha Emission: Three Events From the Intermediate Palomar Transient Factory
Lin Yan, R. Lunnan, D. Perley +20
We present observations of two new hydrogen-poor superluminous supernovae (SLSN-I), iPTF15esb and iPTF16bad, showing late-time H-alpha emission with line luminosities of (1-3)e+41…
On the early-time excess emission in hydrogen-poor superluminous supernovae
Paul M. Vreeswijk, Giorgos Leloudas, Avishay Gal-Yam +27
We present the light curves of the hydrogen-poor superluminous supernovae (SLSNe-I) PTF12dam and iPTF13dcc, discovered by the (intermediate) Palomar Transient Factory. Both show ex…
The Superluminous Transient ASASSN-15lh as a Tidal Disruption Event from a Kerr Black Hole
G. Leloudas, M. Fraser, N. C. Stone +47
When a star passes within the tidal radius of a supermassive black hole, it will be torn apart. For a star with the mass of the Sun () and a non-spinning black hole with a…
Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae from the Palomar Transient Factory
Daniel A. Perley, Robert Quimby, Lin Yan +9
We present ultraviolet through near-infrared photometry and spectroscopy of the host galaxies of all superluminous supernovae (SLSNe) discovered by the Palomar Transient Factory pr…
Type II supernova energetics and comparison of light curves to shock-cooling models
Adam Rubin, Avishay Gal-Yam, Annalisa De Cia +37
During the first few days after explosion, Type II supernovae (SNe) are dominated by relatively simple physics. Theoretical predictions regarding early-time SN light curves in the…
Optical and near-infrared observations of SN 2013dx associated with GRB 130702A
V. L. Toy, S. B. Cenko, J. M. Silverman +33
We present optical and near-infrared light curves and optical spectra of SN 2013dx, associated with the nearby (redshift 0.145) gamma-ray burst GRB 130702A. The prompt isotropic ga…
The hydrogen-poor superluminous supernova iPTF13ajg and its host galaxy in absorption and emission
Paul M. Vreeswijk, Sandra Savaglio, Avishay Gal-Yam +24
We present imaging and spectroscopy of a hydrogen-poor superluminous supernova (SLSN) discovered by the intermediate Palomar Transient Factory: iPTF13ajg. At a redshift of z=0.7403…
A Wolf-Rayet-like progenitor of supernova SN 2013cu from spectral observations of a wind
Avishay Gal-Yam, I. Arcavi, E. O. Ofek +17
The explosive fate of massive stripped Wolf-Rayet (W-R) stars is a key open question in stellar physics. An appealing option is that hydrogen-deficient W-R stars are the progenitor…
A Continuum of H- to He-Rich Tidal Disruption Candidates With a Preference for E+A Galaxies
Iair Arcavi, Avishay Gal-Yam, Mark Sullivan +23
We present the results of a Palomar Transient Factory (PTF) archival search for blue transients which lie in the magnitude range between "normal" core-collapse and superluminous su…
Interaction-powered supernovae: Rise-time vs. peak-luminosity correlation and the shock-breakout velocity
E. O. Ofek, I. Arcavi, D. Tal +16
Interaction of supernova (SN) ejecta with the optically thick circumstellar medium (CSM) of a progenitor star can result in a bright, long-lived shock breakout event. Candidates fo…
GRB 120422A/SN 2012bz: Bridging the Gap between Low- And High-Luminosity GRBs
S. Schulze, D. Malesani, A. Cucchiara +62
At low redshift, a handful of gamma-ray bursts (GRBs) have been discovered with peak luminosities () substantially lower than the average…