267 citations · 481 across the 22 of their papers we have counts for
19 papers · 1 filter
Failed jet breakout in the metal-poor broad-lined type Ic supernova 2026gzf
Antonio Martin-Carrillo, Christina C. Thöne, James K. Leung +103
A long-standing question in the death of massive stars is the role of relativistic jets. While many gamma-ray bursts and some fast X-ray transients seem to be associated with broad…
First Detection of Faraday Rotation in a Gamma-Ray Burst Afterglow: Low Polarization and High Rotation Measure in GRB 260310A Reveal Jet Magnetic Structure and Environment
Collin T. Christy, Tanmoy Laskar, Kate D. Alexander +10
We report the detection of linear polarization in the radio afterglow of GRB 260310A, representing the first centimeter-wavelength polarization detection of a gamma-ray burst (GRB)…
GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at
Daniëlle L. A. Pieterse, Andrew J. Levan, Maria E. Ravasio +27
We present detailed, multi-wavelength analysis of GRB 210704A: a Fermi Gamma-ray Burst Monitor discovered and Fermi Large Area Telescope (LAT) detected gamma-ray burst (GRB). The b…
EP241217a: a likely Type II GRB with an achromatic bump at z = 4.59
Hao Zhou, Jia Ren, Chen-Wei Wang +22
EP241217a is an X-ray transient detected by the Einstein Probe (EP) lasting for about 100 seconds and without accompanying -ray detection. The optical spectroscopy reveals the r…
Optimizing Kilonova Searches: A Case Study of the Type IIb SN 2025ulz in the Localization Volume of the Low-Significance Gravitational Wave Event S250818k
Noah Franz, Bhagya Subrayan, Charles D. Kilpatrick +54
Kilonovae, the ultraviolet/optical/infrared counterparts to binary neutron star mergers, are an exceptionally rare class of transients. Optical follow-up campaigns are plagued by c…
No Sign of a Magnetar Remnant Following the Kilonova-Producing Long GRB 211211A Years Later
Genevieve Schroeder, Ben Margalit, Brian D. Metzger +9
In addition to a -ray burst (GRB), the merger of two neutron stars may produce a temporarily or indefinitely stable neutron star remnant with a strong magnetic field (a "magneta…
Exploring the Relationship Between Swift Short Gamma-Ray Burst Afterglows and their Host Galaxy Properties
Cristian Castrejon, Anya E. Nugent, Wen-fai Fong +3
We present a comprehensive compilation of short-duration gamma-ray burst (GRB) afterglows in the X-ray, optical, and radio bands, comprising 150 events discovered primarily by the…
The kangaroo's first hop: the early fast cooling phase of EP250108a/SN 2025kg
Rob A. J. Eyles-Ferris, Peter G. Jonker, Andrew J. Levan +52
Fast X-ray transients (FXTs) are a rare and poorly understood population of events. Previously difficult to detect in real time, the launch of the Einstein Probe with its wide fiel…
GRB220831A: a hostless, intermediate Gamma-ray burst with an unusual optical afterglow
James Freeburn, Brendan O'Connor, Jeff Cooke +20
GRB220831A is a gamma-ray burst (GRB) with a duration and spectral peak energy that places it at the interface between the distribution of long-soft and short-hard GRBs. In thi…
A Repeating Fast Radio Burst Source in a Low-Luminosity Dwarf Galaxy
Danté M. Hewitt, Mohit Bhardwaj, Alexa C. Gordon +48
We present the localization and host galaxy of FRB 20190208A, a repeating source of fast radio bursts (FRBs) discovered using CHIME/FRB. As part of the PRECISE repeater localizatio…
Where has all the -process gone? Timescales for GRB-Kilonovae to Enrich their Host Galaxies
Anya E. Nugent, Alexander P. Ji, Wen-fai Fong +2
Neutron star (NS) mergers are currently the only observed source of -process production in the Universe. Yet, it is unclear how much -process mass from these mergers is incor…
The Long-lived Broadband Afterglow of Short Gamma-Ray Burst 231117A and the Growing Radio-Detected Short GRB Population
Genevieve Schroeder, Wen-fai Fong, Charles D. Kilpatrick +28
We present multiwavelength observations of the Swift short -ray burst GRB 231117A, localized to an underlying galaxy at redshift at a small projected offset ($\sim 2…
Constraining Near-Simultaneous Radio Emission from Short Gamma-ray Bursts using CHIME/FRB
Alice P. Curtin, Sloane Sirota, Victoria M. Kaspi +12
We use the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst (FRB) Project to search for FRBs that are temporally and spatially coincident with gamma-ray burs…
The Jet Opening Angle and Event Rate Distributions of Short Gamma-ray Bursts from Late-time X-ray Afterglows
Alicia Rouco Escorial, Wen-fai Fong, Edo Berger +14
We present a comprehensive study of 29 short gamma-ray bursts (SGRBs) observed days post-burst using and . We provide the inferred distributi…
The distant, galaxy cluster environment of the short GRB 161104A at and a comparison to the short GRB host population
Anya E. Nugent, Wen-fai Fong, Yuxin Dong +9
We present optical observations of the Swift short-duration gamma-ray burst (GRB) GRB 161104A and its host galaxy at . We model the multiband photometry and spec…
An embedded X-ray source shines through the aspherical AT2018cow: revealing the inner workings of the most luminous fast-evolving optical transients
Raffaella Margutti, B. D. Metzger, R. Chornock +41
We present the first extensive radio to gamma-ray observations of a fast-rising blue optical transient (FBOT), AT2018cow, over its first ~100 days. AT2018cow rose over a few days t…
Jets in Hydrogen-poor Super-luminous Supernovae: Constraints from a Comprehensive Analysis of Radio Observations
D. L. Coppejans, R. Margutti, C. Guidorzi +16
The energy source powering the extreme optical luminosity of hydrogen-stripped Superluminous Supernovae (SLSNe-I) is not known, but recent studies have highlighted the case for a c…
An Empirical Study of Contamination in Deep, Rapid, and Wide-Field Optical Follow-Up of Gravitational Wave Events
P. S. Cowperthwaite, E. Berger, A. Rest +10
We present an empirical study of contamination in deep, rapid, and wide-field optical follow-up searches of GW sources from aLIGO. We utilize dedicated observations during four nig…
The Afterglow and Environment of the Short GRB111117A
R. Margutti, E. Berger, W. Fong +10
We present multi-wavelength observations of the afterglow of the short GRB111117A, and follow-up observations of its host galaxy. From rapid optical and radio observations we place…