The Peculiar Physics of GRB 170817A and Their Implications for Short GRBs

D. Bégué, J. Michael Burgess, J. Greiner

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The unexpected nearby gamma-ray burst (GRB) GRB 170817A associated with the Laser Interferometer Gravitational-Wave Observatory binary neutron star merger event GW170817 presents a challenge to the current understanding of the emission physics of short GRBs. The event's low luminosity but similar peak energy compared to standard short GRBs are difficult to explain with current models, challenging our understanding of the GRB emission process. Emission models invoking synchrotron radiation from electrons accelerated in shocks and photospheric emission are particularly challenging explanations for this burst.

Original languageEnglish
Article numberL19
JournalAstrophysical Journal Letters
Issue number1
StatePublished - 10 Dec 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved..


We thank Hans-Thomas Janka for fruitful discussions. D.B. is supported by the Deutsche Forschungsgemeinschaft (SFB 1258).

FundersFunder number
Deutsche ForschungsgemeinschaftSFB 1258


    • gamma-ray burst: individual (170817A)
    • radiation mechanisms: non-thermal
    • radiation mechanisms:thermal


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