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Indirect manifestation of GRBs in the Galaxy: Compton trails and positrons

Abstract : Two independent indirect manifestations of Galactic gamma-ray bursts (GRBs) are considered, whose importance for gamma-ray astronomy will depend on a still poorly known -- though astrophysically important -- parameter, namely the GRB repetition timescale in a Galaxy like ours. Both phenomena are expected to lead to observational constrains about this timescale. The first one relates to the Compton scattering of the GRB gamma-rays in the disk of the Galaxy, and the second one to the long-term annihilation pattern of positrons produced just ahead of the ultra-relativistic plasma, by photo-pair production.
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http://hal.in2p3.fr/in2p3-00023599
Contributor : Suzanne Robert <>
Submitted on : Monday, January 17, 2005 - 4:12:37 PM
Last modification on : Wednesday, September 16, 2020 - 4:10:35 PM

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Etienne Parizot. Indirect manifestation of GRBs in the Galaxy: Compton trails and positrons. 5th Rencontres du Vietnam "New Views on the Universe", Aug 2004, Hanoi, Vietnam. pp.4. ⟨in2p3-00023599⟩

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