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Photospheric emission from gamma-ray bursts
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-4378-8785
2013 (English)In: EAS Publications Series, 2013, 53-57 p.Conference paper, Published paper (Refereed)
Abstract [en]

In spite of extensive research over the past decades, a complete physical picture of the origin of the prompt gamma-ray burst emission is still lacking. During recent years, evidence has been accumulating that the jet photosphere plays an important role. In this paper we summarize the lessons learned from Fermi observations regarding the behavior of the photosphere and discuss why photospheric emission does not necessarily appear as blackbody radiation. We concentrate on two strong and important bursts, GRB 090902B and GRB 110721A, which serve as examples of the standard appearance photospheric emission may have in gamma-ray burst spectra.

Place, publisher, year, edition, pages
2013. 53-57 p.
Series
EAS Publications Series, ISSN 1633-4760 ; 61
Keyword [en]
Black body radiation, Gamma ray bursts, Photospheric emission, Physical pictures, Antenna radiation, Gamma rays, Stars
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-139962DOI: 10.1051/eas/1361006ISI: 000323183700007Scopus ID: 2-s2.0-84887077384OAI: oai:DiVA.org:kth-139962DiVA: diva2:688324
Conference
2012 Gamma-Ray Burst Symposium, GRB 2012; Malaga, Spain, 8-12 October 2012
Note

QC 20140116

Available from: 2014-01-16 Created: 2014-01-16 Last updated: 2014-01-23Bibliographically approved

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Axelsson, Magnus

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