Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/45328
Title: Spectral energy distribution of the gamma-ray microquasar LS 5039
Author: Paredes i Poy, Josep Maria
Bosch i Ramon, Valentí
Romero, Gustavo E.
Keywords: Raigs X
Estels binaris
Vents
Raigs gamma
Estels
Quàsars
X-rays
Double stars
Winds
Gamma rays
Stars
Quasars
Issue Date: 2006
Publisher: Springer Verlag
Abstract: The microquasar LS 5039 has recently been detected as a source of very high energy (VHE) $\gamma$-rays. This detection, that confirms the previously proposed association of LS 5039 with the EGRET source 3EG~J1824$-$1514, makes of LS 5039 a special system with observational data covering nearly all the electromagnetic spectrum. In order to reproduce the observed spectrum of LS 5039, from radio to VHE $\gamma$-rays, we have applied a cold matter dominated jet model that takes into account accretion variability, the jet magnetic field, particle acceleration, adiabatic and radiative losses, microscopic energy conservation in the jet, and pair creation and absorption due to the external photon fields, as well as the emission from the first generation of secondaries. The radiative processes taken into account are synchrotron, relativistic Bremsstrahlung and inverse Compton (IC). The model is based on a scenario that has been characterized with recent observational results, concerning the orbital parameters, the orbital variability at X-rays and the nature of the compact object. The computed spectral energy distribution (SED) shows a good agreement with the available observational data.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20054155
It is part of: Astronomy and Astrophysics, 2006, vol. 451, num. 1, p. 259-266
Related resource: http://dx.doi.org/10.1051/0004-6361:20054155
URI: http://hdl.handle.net/2445/45328
ISSN: 0004-6361
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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