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Appearances of the jet photosphere in GRB spectra
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-9769-8016
2018 (English)In: 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings, World Scientific Publishing Co. Pte. Ltd. , 2018, p. 2921-2930Conference paper, Published paper (Refereed)
Abstract [en]

There are several strong arguments for considering photospheric emission in GRBs. Here, we describe the two main appearances of the photospheric emission that are currently discussed. In the multi-component models the photosphere only contributes to a part of the spectrum, while the main part is due to optically-thin synchrotron emission. In the photospheric emission models the whole emission spectrum is from the photosphere: The emission spectrum has been altered due to subphotospheric dissipation and/or off-axis emission. In many cases, though, it is difficult to distinguish between these models on a purely statistical ground. Therefore, more detailed predictions from different physical scenarios should be tested on the observations.

Place, publisher, year, edition, pages
World Scientific Publishing Co. Pte. Ltd. , 2018. p. 2921-2930
Keywords [en]
GRBs, Thermal emission, Astrophysics, Emission spectroscopy, Emission spectrums, Multicomponent model, Off-axis, Photospheric emission, Physical scenario, Synchrotron emission, Thermal emissions, Relativity
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-247441Scopus ID: 2-s2.0-85059092983ISBN: 9789813226593 (print)OAI: oai:DiVA.org:kth-247441DiVA, id: diva2:1305710
Conference
14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, 12 July 2015 through 18 July 2015
Note

QC20190418

Available from: 2019-04-18 Created: 2019-04-18 Last updated: 2019-04-18Bibliographically approved

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Acuner, ZeynepRyde, Felix

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Citation style
  • apa
  • harvard1
  • ieee
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Output format
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