141 citations · 1.4k across the 67 of their papers we have counts for
11 papers · 1 filter
SN2023ixf in Messier 101: the twilight years of the progenitor as seen by Pan-STARRS
Conor L. Ransome, V. Ashley Villar, Anna Tartaglia +28
The nearby type II supernova, SN2023ixf in M101 exhibits signatures of early-time interaction with circumstellar material in the first week post-explosion. This material may be the…
Discovery of a Proto-White Dwarf with a Massive Unseen Companion
Gautham Adamane Pallathadka, Vedant Chandra, Nadia L. Zakamska +8
We report the discovery of SDSS~J022932.28+713002.7, a nascent extremely low-mass (ELM) white dwarf (WD) orbiting a massive ( at 2 confidence) companion with a per…
A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf
Jacob E. Jencson, Jeniveve Pearson, Emma R. Beasor +23
We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star. The star dis…
SN 2022oqm: A Bright and Multi-peaked Calcium-rich Transient
S. Karthik Yadavalli, V. Ashley Villar, Luca Izzo +60
We present the photometric and spectroscopic evolution of SN 2022oqm, a nearby multi-peaked hydrogen- and helium-weak calcium-rich transient (CaRT). SN 2022oqm was detected 13.1 kp…
Bound Debris Expulsion from Neutron Star Merger Remnants
Yossef Zenati, Julian H. Krolik, Leonardo R. Werneck +4
Many studies have found that neutron star mergers leave a fraction of the stars' mass in bound orbits surrounding the resulting massive neutron star or black hole. This mass is a s…
SN2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova
Charles D. Kilpatrick, Ryan J. Foley, Wynn V. Jacobson-Galán +15
We present pre-explosion optical and infrared (IR) imaging at the site of the type II supernova (SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-ba…
An Asymmetric Double-Degenerate Type Ia Supernova Explosion with a Surviving Companion Star
Matthew R. Siebert, Ryan J. Foley, Yossef Zenati +6
We present nebular spectroscopy of SN 2020hvf, a Type Ia supernova (SN Ia) with an early bump in its light curve. SN 2020hvf shares many spectroscopic and photometric similarities…
SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova
W. V. Jacobson-Galan, L. Dessart, R. Margutti +65
We present UV/optical observations and models of supernova (SN) 2023ixf, a type II SN located in Messier 101 at 6.9 Mpc. Early-time ("flash") spectroscopy of SN 2023ixf, obtained p…
Flight of the Bumblebee: the Early Excess Flux of Type Ia Supernova 2023bee revealed by , and Young Supernova Experiment Observations
Qinan Wang, Armin Rest, Georgios Dimitriadis +41
We present high-cadence ultraviolet through near-infrared observations of the Type Ia supernova (SN Ia) 2023bee in NGC~2708 ( Mpc), finding excess flux in the first d…
Neutrino signals from Neutron Star implosions to Black Holes
Yossef Zenati, C. Albertus, M. Ángeles Pérez-García +1
We calculate the neutrino luminosity in an astrophysical scenario where dark matter is captured by a neutron star which eventually implodes to form a low mass black hole. The Troja…
The optical light curve of GRB 221009A: the afterglow and the emerging supernova
M. D. Fulton, S. J. Smartt, L. Rhodes +46
We present extensive optical photometry of the afterglow of GRB~221009A. Our data cover \,days from the time of \textit{Swift} and \textit{Fermi} GRB detections. Photom…