Brendan O'Connor
Brendan O'Connor
Post-Doctoral Associate
Neil Gehrels Postdoctoral Prize Fellow
Hi, I'm Brendan. I am a Neil Gehrels Fellow working in time-domain and multimessenger (TDAMM) astrophysics. My research focuses on the origin and evolution of high-energy transients and the extreme stellar systems that produce them. I am particularly interested in the relativistic outflows that produce gamma-ray bursts and fast X-ray transients, including phenomena associated with the deaths of massive stars and the mergers of compact objects. I use a variety of multiwavelength observatories across the electromagnetic spectrum (e.g., Gemini, Chandra, HST, JWST) to investigate the physical mechanisms that power these transients and to constrain the properties of their progenitors and environments.
I received my PhD from The George Washington University in 2023. Prior to moving to Maryland, I was a McWilliams Fellow at Carnegie Mellon University.
Research Centers & Collaborations
Facilities
Latest Papers
A Possible High-redshift Origin for the Short GRB 061201: Implications of a Compact Binary Merger beyond Cosmic Noon
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The Astrophysical Journal Letters
UMD Author(s): Brendan O'Connor
An Extremely Bright Slow-rising Afterglow from an Off-axis Jet in GRB 260310A
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The Astrophysical Journal Letters
UMD Author(s): Brendan O'Connor
The Host Galaxies and Merger Environments of Short and Long Gamma-Ray Bursts Producing Kilonovae
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The Astrophysical Journal
Author(s): Hannah Skobe, Brendan O’Connor, Antonella Palmese, et. al
UMD Author(s): Brendan O'Connor
Prospects for Gamma-Ray Burst Afterglow Discovery with the Eric and Wendy Schmidt Observatory System
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The Astrophysical Journal
Author(s): James Freeburn, Dougal Dobie, Akash Anumarlapudi, et. al
UMD Author(s): Brendan O'Connor
EP250827b/SN 2025wkm: An X-Ray Flash-supernova Powered by a Central Engine and Circumstellar Interaction
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The Astrophysical Journal Letters
Author(s): Srinivasaragavan, Gokul P., Li, Dongyue, Hall, Xander J.
UMD Author(s): Michael Coleman Miller, Gokul Prem Srinivasaragavan, Brendan O'Connor
GRB 260310A/SN 2026fgk: Photometric and Spectroscopic Evolution of a Nearby Gamma-Ray Burst Supernova and an Exceptionally Bright Afterglow at z = 0.153
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The Astrophysical Journal
Author(s): Brendan O’Connor, Malte Busmann, Xander J. Hall, et. al
UMD Author(s): Brendan O'Connor
EP250827b/SN 2025wkm: An X-Ray Flash-supernova Powered by a Central Engine and Circumstellar Interaction
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The Astrophysical Journal Letters
Author(s): Srinivasaragavan, Gokul P., Li, Dongyue, Hall, Xander J.
UMD Author(s): Michael Coleman Miller, Gokul Prem Srinivasaragavan, Brendan O'Connor
EP260321a/SN 2026gzf: The Faintest Shock Breakout Associated with a Broad-lined Supernova
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The Astrophysical Journal Letters
Author(s): Brendan O’Connor, Xander J. Hall, Malte Busmann, et. al
UMD Author(s): Brendan O'Connor
The DESI Transients Survey: Legacy Classifications and Methodology
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The Astrophysical Journal Supplement Series
Author(s): Xander J. Hall, Antonella Palmese, Segev BenZvi, et. al
UMD Author(s): Brendan O'Connor

