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Gamma-ray bursts from massive Population-III stars: clues from the radio band

Journal
Date Issued
2016
Author(s)
Burlon, D.
•
Murphy, T.
•
•
Hancock, P. J.
•
Parry, R.
•
DOI
Abstract
Current models suggest gamma-ray bursts could be used as a way of probing Population-III stars - the first stars in the early Universe. In this paper, we use numerical simulations to demonstrate that late-time radio observations of gamma-ray burst afterglows could provide a means of identifying bursts that originate from Population-III stars, if these were highly massive, independently from their redshift. We then present the results from a pilot study using the Australia Telescope Compact Array at 17 GHz, designed to test the hypothesis that there may be Population-III gamma-ray bursts amongst the current sample of known events. We observed three candidates plus a control gamma-ray burst, and make no detections with upper limits of 20-40 μJy at 500-1300 d post-explosion.
Volume
459
Issue
3
Start page
3356
Uri
Url
Issn Identifier
0035-8711
Ads BibCode
2016MNRAS.459.3356B
Rights
open.access
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