Files and links (1)
Published, Version of Record (VoR)Open Access (License Unspecified), Open
Journal article
A strong limit on the very-high-energy emission from GRB 150323A
The Astrophysical journal, v 857(1)
03 Mar 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
On 2015 March 23, VERITAS responded to a $Swift$-BAT detection of a gamma-ray
burst, with observations beginning 270 seconds after the onset of BAT emission,
and only 135 seconds after the main BAT emission peak. No statistically
significant signal is detected above 140 GeV. The VERITAS upper limit on the
fluence in a 40 minute integration corresponds to about 1% of the prompt
fluence. Our limit is particularly significant since the very-high-energy (VHE)
observation started only $\sim$2 minutes after the prompt emission peaked, and
$Fermi$-LAT observations of numerous other bursts have revealed that the
high-energy emission is typically delayed relative to the prompt radiation and
lasts significantly longer. Also, the proximity of GRB~150323A ($z=0.593$)
limits the attenuation by the extragalactic background light to $\sim 50$ % at
100-200 GeV. We conclude that GRB 150323A had an intrinsically very weak
high-energy afterglow, or that the GeV spectrum had a turnover below $\sim100$
GeV. If the GRB exploded into the stellar wind of a massive progenitor, the VHE
non-detection constrains the wind density parameter to be $A\gtrsim 3\times
10^{11}$ g cm$^{-1}$, consistent with a standard Wolf-Rayet progenitor.
Alternatively, the VHE emission from the blast wave would be weak in a very
tenuous medium such as the ISM, which therefore cannot be ruled out as the
environment of GRB 150323A.
Metrics
Details
- Title
- A strong limit on the very-high-energy emission from GRB 150323A
- Creators
- A. U Abeysekara - University of UtahA Archer - Washington University in St. LouisW Benbow - Harvard UniversityR Bird - University of California, Los AngelesR Brose - University of PotsdamM Buchovecky - University of California, Los AngelesV Bugaev - Washington University in St. LouisM. P Connolly - National University of Ireland, GalwayW Cui - Tsinghua UniversityM Errando - Washington University in St. LouisA Falcone - Pennsylvania State UniversityQ Feng - McGill UniversityJ. P Finley - Purdue University West LafayetteA Flinders - University of UtahL Fortson - University of MinnesotaA Furniss - California State University SystemG. H Gillanders - National University of Ireland, GalwayM Hütten - VERITAS CollaborationD Hanna - McGill UniversityO Hervet - University of California, Santa CruzJ Holder - University of DelawareG Hughes - Harvard UniversityT. B Humensky - Columbia UniversityC. A Johnson - University of California, Santa CruzP Kaaret - University of IowaP Kar - University of UtahN Kelley-Hoskins - VERITAS CollaborationM Kertzman - DePauw UniversityD Kieda - University of UtahM Krause - VERITAS CollaborationF Krennrich - Iowa State UniversityM. J Lang - National University of Ireland, GalwayT. T. Y Lin - McGill UniversityG Maier - VERITAS CollaborationS McArthur - Purdue University West LafayetteP Moriarty - National University of Ireland, GalwayR Mukherjee - Columbia UniversityS O'Brien - University College DublinR. A Ong - University of California, Los AngelesN Park - University of ChicagoJ. S Perkins - Goddard Space Flight CenterA Petrashyk - Columbia UniversityM Pohl - University of PotsdamA Popkow - University of California, Los AngelesE Pueschel - VERITAS CollaborationJ Quinn - University College DublinK Ragan - McGill UniversityP. T Reynolds - Cork Institute of TechnologyG. T Richards - Georgia Institute of TechnologyE Roache - Harvard UniversityC Rulten - University of MinnesotaI Sadeh - VERITAS CollaborationM Santander - Columbia UniversityG. H Sembroski - Purdue University West LafayetteK Shahinyan - University of MinnesotaJ Tyler - McGill UniversityS. P Wakely - University of ChicagoO. M Weiner - Columbia UniversityA Weinstein - VERITAS CollaborationR. M Wells - Iowa State UniversityP Wilcox - University of IowaA Wilhelm - University of PotsdamD. A Williams - University of California, Santa CruzB Zitzer - McGill UniversityIndrek Vurm - Columbia UniversityAndrei Beloborodov - Columbia UniversityVERITAS Collaboration
- Publication Details
- The Astrophysical journal, v 857(1)
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000429729200013
- Scopus ID
- 2-s2.0-85045544581
- Other Identifier
- 991019201488504721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics