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Simulating the 21 cm forest detectable with LOFAR and SKA in the spectra of high-zGRBs
journal contribution
posted on 2023-06-09, 07:02 authored by B Ciardi, S Inoue, F B Abdalla, K Asad, G Bernardi, J S Bolton, M Brentjens, A G de Bruyn, E Chapman, Ilian IlievIlian Iliev, et alWe investigate the feasibility of detecting 21 cm absorption features in the afterglow spectra of high redshift long Gamma Ray Bursts (GRBs). This is done employing simulations of cosmic reionization, together with estimates of the GRB radio afterglow flux and the instrumental characteristics of the LOw Frequency ARray (LOFAR). We find that absorption features could be marginally (with a S/N larger than a few) detected by LOFAR at z ? 7 if the GRB is a highly energetic event originating from Pop III stars, while the detection would be easier if the noise were reduced by one order of magnitude, i.e. similar to what is expected for the first phase of the Square Kilometre Array (SKA1-low). On the other hand, more standard GRBs are too dim to be detected even with ten times the sensitivity of SKA1-low, and only in the most optimistic case can a S/N larger than a few be reached at z ? 9.
Funding
Additional AGP funding - supplementary to Sussex Consolidated Grant ST/L000652/1; G1443; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/M003574/1
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Publication status
- Published
File Version
- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
1Volume
453Page range
101-105Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Astronomy Centre Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-07-06First Open Access (FOA) Date
2017-07-06First Compliant Deposit (FCD) Date
2017-07-06Usage metrics
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