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Type: Journal article
Title: First limits on the very-high energy gamma-ray afterglow emission of a fast radio burst: H.E.S.S. Observations of FRB 150418
Author: Abdalla, H.
Abramowski, A.
Aharonian, F.
Ait Benkhali, F.
Akhperjanian, A.
Andersson, T.
Angüner, E.
Arakawa, M.
Arrieta, M.
Aubert, P.
Backes, M.
Balzer, A.
Barnard, M.
Becherini, Y.
Becker Tjus, J.
Berge, D.
Bernhard, S.
Bernlöhr, K.
Blackwell, R.
Böttcher, M.
et al.
Citation: Astronomy and Astrophysics, 2017; 597:A115-1-A115-5
Publisher: EDP Sciences
Issue Date: 2017
ISSN: 0004-6361
Statement of
H. Abdalla, A. Abramowski, F. Aharonian, F. Ait Benkhali … Gavin P. Rowell … Fabien Voisin … et al. (H.E.S.S. Collaboration)
Abstract: Aims. Following the detection of the fast radio burst FRB150418 by the SUPERB project at the Parkes radio telescope, we aim to search for very-high energy gamma-ray afterglow emission. Methods. Follow-up observations in the very-high energy gamma-ray domain were obtained with the H.E.S.S. imaging atmospheric Cherenkov telescope system within 14.5 h of the radio burst. Results. The obtained 1.4 h of gamma-ray observations are presented and discussed. At the 99% C.L. we obtained an integral upper limit on the gamma-ray flux of Φγ(E > 350 GeV) < 1.33 × 10-8 m-2 s-1. Differential flux upper limits as function of the photon energy were derived and used to constrain the intrinsic high-energy afterglow emission of FRB 150418. Conclusions. No hints for high-energy afterglow emission of FRB 150418 were found. Taking absorption on the extragalactic background light into account and assuming a distance of z = 0.492 based on radio and optical counterpart studies and consistent with the FRB dispersion, we constrain the gamma-ray luminosity at 1 TeV to L < 5.1 × 1047 erg/s at 99% C.L.
Keywords: Gamma rays; astroparticle physics
Rights: © ESO 2017
RMID: 0030063946
DOI: 10.1051/0004-6361/201629117
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Appears in Collections:Physics publications

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