[gamma]-ray production via IC scattering of the infrared excess from the Be-type star in the binary system PSR B1259-63/SS2883

[gamma]-ray production via IC scattering of the infrared excess from the Be-type star in the binary system PSR B1259-63/SS2883

Abstract Un-pulsed γ-ray emission has been detected close to periastron in the pulsar/Be-star binary system PSR B1259-63/SS 2883, believed to originate from the shock front that forms between the stellar and pulsar winds. A likely source of γ-ray production is the inverse Compton up-scattering of ta...

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Veröffentlicht in:Proceedings of the International Astronomical Union 2010-07, Vol.6 (S272), p.636
Hauptverfasser: van Soelen, Brian, Meintjes, Pieter J
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Sprache:eng
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Astronomy
Double stars
Gamma ray astronomy
Infrared imaging systems
Stars & galaxies
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Meintjes, Pieter J
description Abstract Un-pulsed γ-ray emission has been detected close to periastron in the pulsar/Be-star binary system PSR B1259-63/SS 2883, believed to originate from the shock front that forms between the stellar and pulsar winds. A likely source of γ-ray production is the inverse Compton up-scattering of target photons from the Be star by relativistic electrons/positrons in the pulsar wind. In this study the influence of the infrared radiation, emanating from the circumstellar disc, on isotropic inverse Compton γ-ray production is investigated. It is shown that the scattering of infrared disc photons can increase the γ-ray flux by a factor ~2 in the 1-10 GeV range. [PUBLICATION ABSTRACT]
doi_str_mv 10.1017/S1743921311011677
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subjects Astronomy
Double stars
Gamma ray astronomy
Infrared imaging systems
Stars & galaxies
title [gamma]-ray production via IC scattering of the infrared excess from the Be-type star in the binary system PSR B1259-63/SS2883
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