AH
A. J. van der Horst
astro-ph.HEastro-ph.IMastro-ph.GAastro-ph.COastro-phastro-ph.SRgr-qcastro-ph.EPhep-phbinaries: eclipsing
On Valency
published · living versionsW_k9dqfvdz·v1 · currentpublished
The brightest GRB ever detected: GRB 221009A as a highly luminous event at z = 0.151
with D. B. Malesani, A. J. Levan, L. Izzo, A. de Ugarte Postigo +37
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Preprints & journals
260 papers in the corpus · 2005–2026Comparing the size evolution of GRB 221009A with afterglow models2610.02988v1 · S. Giarratana, O. S. Salafia, B. Marcote et al.2026 · 0 citationsarXiv
A Proliferated Space Architecture for Time-Domain Astrophysics2609.12153v1 · Daniel Kocevski (NASA/MSFC), Eric Burns (LSU), Thomas Barclay (NASA/GSFC) et al.2026 · 0 citationsarXiv
17 Yr of Magnetar Bursts Observed with the Fermi Gamma-ray Burst Monitor2609.02809v1 · Matt Godwin, Ozge Keskin, Mustafa Demirer et al.2026 · 0 citationsarXiv
The second Arcminute Microkelvin Imager - Large Array Gamma-ray burst radio afterglow catalog2608.13697v2 · L. Rhodes, D. Ibrahim, N. Sqalli et al.2026 · 0 citationsarXiv
4th TDAMM Workshop White Paper2607.22404v1 · Daniel Kocevski, Raffaella Margutti, Michael Coughlin et al.2026 · 0 citationsarXiv
GRB 240205B: A Reverse Shock Detected in Rapid Response Radio Observations2603.19047v1 · S. I. Chastain, G. E. Anderson, A. J. van der Horst et al.2026 · 0 citationsarXiv
The odyssey of the black hole low mass X-ray binary GX339-4: Five years of dense multi-wavelength monitoring2601.13360v1 · E. Tremou, S. Corbel, R. Fender et al.2026 · 0 citationsarXiv
First Results from the PanRadio Gamma-Ray Burst Collaboration: The 400-day Afterglow of GRB 230815A2511.07644v2 · James K. Leung, Gemma E. Anderson, Alexander J. van der Horst et al.2025 · 1 citationarXiv
A LOFAR search for coherent radio emission accompanying prompt engine activity in gamma-ray bursts2509.21142v1 · A. Hennessy, R. L. C. Starling, A. Rowlinson et al.2025 · 2 citationsarXiv
Discovery and Analysis of Afterglows from Poorly Localised GRBs with the Gravitational-wave Optical Transient Observer (GOTO) All-sky Survey2509.09827v2 · Amit Kumar, B. P. Gompertz, B. Schneider et al.2025 · 2 citationsMNRAS, Volume 544, Issue 2, December 2025, Pages 1541-1587
VLA FRAMEx. III. Circumnuclear Radio Emission Mechanisms in Hard X-ray Selected Active Galactic Nuclei2509.03466v2 · Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson et al.2025 · 0 citationsarXiv
The radio flare and multi-wavelength afterglow of the short GRB 231117A: energy injection from a violent shell collision2508.14650v1 · G. E. Anderson, G. P. Lamb, B. P. Gompertz et al.2025 · 3 citationsarXiv
GRB 241105A: A test case for GRB classification and rapid r-process nucleosynthesis channels2507.15940v2 · Dimple, B. P. Gompertz, A. J. Levan et al.2025 · 5 citationsMon Not R Astron Soc (2025) 548-571
Thermal electrons in the radio afterglow of relativistic tidal disruption event ZTF22aaajecp/AT2022cmc2506.13618v2 · Lauren Rhodes, Ben Margalit, Joe S. Bright et al.2025 · 0 citationsarXiv
VLA FRAMEx. II. Radio Spectra of Nearby Active Galactic Nuclei at Subarcsecond Resolution2503.20026v1 · Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson et al.2025 · 2 citationsarXiv
The Science of the Einstein Telescope2503.12263v2 · Adrian Abac, Raul Abramo, Simone Albanesi et al.2025 · 117 citationsJCAP 03 (2026) 081
VLA+VLBA to ngVLA Transition Option Concepts2501.06333v2 · Alessandra Corsi, Joseph W. Lazio, Stefi Baum et al.2025 · 1 citationarXiv
Revisiting the Intergalactic Medium Around GRB 130606A and Constraints on the Epoch of Reionization2412.09732v2 · H.M. Fausey, A.J. van der Horst, N.R. Tanvir et al.2024 · 3 citationsarXiv
Commensal Transient Searches with MeerKAT in Gamma-Ray Burst and Supernova Fields2412.02832v3 · S. I. Chastain, A. J. van der Horst, A. Horesh et al.2024 · 2 citationsarXiv
Finding radio transients with anomaly detection and active learning based on volunteer classifications2410.01034v2 · Alex Andersson, Chris Lintott, Rob Fender et al.2024 · 6 citationsMNRAS, 2025, 538, 3, pp.1397-1414
The Einstein Probe transient EP240414a: Linking Fast X-ray Transients, Gamma-ray Bursts and Luminous Fast Blue Optical Transients2409.19056v1 · Joyce N.D. van Dalen, Andrew J. Levan, Peter G. Jonker et al.2024 · 46 citationsarXiv
The early radio afterglow of short GRB 230217A2409.07686v2 · G. E. Anderson, G. Schroeder, A. J. van der Horst et al.2024 · 7 citations2024 ApJL 975 L13
Rocking the BOAT: the ups and downs of the long-term radio light curve for GRB 221009A2408.16637v1 · L. Rhodes, A. J. van der Horst, J. S. Bright et al.2024 · 18 citationsarXiv
Key Science Goals for the Next Generation Very Large Array (ngVLA): Update from the ngVLA Science Advisory Council (2024)2408.14497v1 · David J. Wilner, Brenda C. Matthews, Brett McGuire et al.2024 · 1 citationarXiv
Constraints on Short Gamma-Ray Burst Physics and Their Host Galaxies from Systematic Radio Follow-up Campaigns2407.11883v1 · S. I. Chastain, A. J. van der Horst, G. E. Anderson et al.2024 · 6 citationsarXiv
Future Perspectives for Gamma-ray Burst Detection from Space2404.11808v1 · Enrico Bozzo, Lorenzo Amati, Wayne Baumgartner et al.2024 · 11 citationsarXiv
Neutral Fraction of Hydrogen in the Intergalactic Medium Surrounding High-Redshift Gamma-Ray Burst 210905A2403.13126v2 · H.M. Fausey, S. Vejlgaard, A.J. van der Horst et al.2024 · 7 citationsarXiv
Fires in the deep: The luminosity distribution of early-time gamma-ray-burst afterglows in light of the Gamow Explorer sensitivity requirements2403.00101v1 · D.A. Kann, N.E. White, G. Ghirlanda et al.2024 · 14 citationsA&A 686, A56 (2024)
A candidate coherent radio flash following a neutron star merger2312.04237v3 · A. Rowlinson, I. de Ruiter, R.L.C. Starling et al.2023 · 14 citationsarXiv
FRAMEx. V. Radio Spectral Shape at Central Sub-parsec Region of AGNs2312.04452v1 · Onic I. Shuvo, Megan C. Johnson, Nathan J. Secrest et al.2023 · 0 citationsarXiv
VLA FRAMEx. I. Wideband Radio Properties of the AGN in NGC 43882311.18833v1 · Andrew J. Sargent, Travis C. Fischer, Megan C. Johnson et al.2023 · 7 citationsarXiv
The expansion of the GRB 221009A afterglow2311.05527v3 · S. Giarratana, O. S. Salafia, M. Giroletti et al.2023 · 11 citationsA&A 690, A74 (2024)
Heavy-element production in a compact object merger observed by JWST.37879361 · Levan, Andrew J, Gompertz, Benjamin P, Salafia, Om Sharan et al.2024 · 255 citationsNature. 2024;626(8000):737-741
Photometric Redshift Estimation for Gamma-Ray Bursts from the Early Universe2310.03093v1 · H. M. Fausey, A. J. van der Horst, N. E. White et al.2023 · 4 citationsarXiv
Commensal Transient Searches in Eight Short Gamma Ray Burst Fields2309.08004v1 · S. I. Chastain, A. J. van der Horst, A. Rowlinson et al.2023 · 8 citationsMonthly Notices of the Royal Astronomical Society, 2023;, stad2714
A LOFAR prompt search for radio emission accompanying X-ray flares in GRB 210112A2308.16121v2 · A. Hennessy, R. L. C. Starling, A. Rowlinson et al.2023 · 4 citationsMNRAS, 526, 106-117 (2023)
A Radio Flare in the Long-Lived Afterglow of the Distant Short GRB 210726A: Energy Injection or a Reverse Shock from Shell Collisions?2308.10936v2 · Genevieve Schroeder (Northwestern/CIERA), Lauren Rhodes, Tanmoy Laskar et al.2023 · 19 citationsarXiv
Swift Deep Galactic Plane Survey Classification of Swift J170800$-$402551.8 as a Candidate Intermediate Polar Cataclysmic Variable2307.13959v3 · B. O'Connor, E. Gogus, J. Hare et al.2023 · 3 citationsarXiv
A new method for short duration transient detection in radio images: Searching for transient sources in MeerKAT data of NGC 50682306.16383v1 · S. Fijma, A. Rowlinson, R.A.M.J. Wijers et al.2023 · 6 citationsarXiv
The Swift Deep Galactic Plane Survey (DGPS) Phase-I Catalog2306.14354v3 · B. O'Connor, C. Kouveliotou, P. A. Evans et al.2023 · 1 citationarXiv
Quasi-Periodic Peak Energy Oscillations in X-ray Bursts from SGR J1935+21542306.08130v1 · Oliver J. Roberts, Matthew G. Baring, Daniela Huppenkothen et al.2023 · 6 citationsApJL 956 L27 (2023)
Identification of 1RXS J165424.6-433758 as a polar cataclysmic variable2306.05576v2 · B. O'Connor, J. Brink, D. A. H. Buckley et al.2023 · 4 citationsarXiv
A structured jet explains the extreme GRB 221009A.37285439 · O'Connor, Brendan, Troja, Eleonora, Ryan, Geoffrey et al.2023 · 116 citationsScience advances. 2023;9(23):eadi1405
Bursts from Space: MeerKAT - The first citizen science project dedicated to commensal radio transients2304.14157v1 · Alex Andersson, Chris Lintott, Rob Fender et al.2023 · 12 citationsarXiv
Optical darkness in short-duration -ray bursts2304.09122v1 · Caden Gobat, Alexander J. van der Horst, David Fitzpatrick2023 · 5 citationsarXiv
Precise Measurements of Self-absorbed Rising Reverse Shock Emission from Gamma-ray Burst 221009A2303.13583v2 · Joe S. Bright, Lauren Rhodes, Wael Farah et al.2023 · 39 citationsarXiv
The first JWST spectrum of a GRB afterglow: No bright supernova in observations of the brightest GRB of all time, GRB 221009A2302.07761v2 · A. J. Levan, G. P. Lamb, B. Schneider et al.2023 · 47 citationsarXivon Valency
The brightest GRB ever detected: GRB 221009A as a highly luminous event at z = 0.1512302.07891v2 · D. B. Malesani, A. J. Levan, L. Izzo et al.2023 · 29 citationsA&A 701, A134 (2025)on Valency
The 2022 high-energy outburst and radio disappearing act of the magnetar 1E 1547.0-54082302.07397v2 · Marcus E. Lower, George Younes, Paul Scholz et al.2023 · 20 citationsarXiv
Day-timescale variability in the radio light curve of the Tidal Disruption Event AT2022cmc: confirmation of a highly relativistic outflow2301.12770v1 · L. Rhodes, J. S. Bright, R. Fender et al.2023 · 30 citationsarXiv
Career total: at least 660 works. 260 are in this corpus.Showing the 50 most recent.
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