Spectral energy distribution of the γ-ray microquasar LS 5039

The microquasar LS 5039 has recently been detected as a source of very high energy (VHE) γ-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 electr...

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Detalles Bibliográficos
Autores principales: Paredes, J. M., Bosch-Ramon, V., Romero, Gustavo Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Ciencias Astronómicas
Gamma rays: observations
Gamma rays: theory
Stars: individual: LS 5039
Stars: winds, outflows
X-rays: binaries
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83217
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83217
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Gamma rays: observations
Gamma rays: theory
Stars: individual: LS 5039
Stars: winds, outflows
X-rays: binaries
spellingShingle Ciencias Astronómicas
Gamma rays: observations
Gamma rays: theory
Stars: individual: LS 5039
Stars: winds, outflows
X-rays: binaries
Paredes, J. M.
Bosch-Ramon, V.
Romero, Gustavo Esteban
Spectral energy distribution of the γ-ray microquasar LS 5039
topic_facet Ciencias Astronómicas
Gamma rays: observations
Gamma rays: theory
Stars: individual: LS 5039
Stars: winds, outflows
X-rays: binaries
description The microquasar LS 5039 has recently been detected as a source of very high energy (VHE) γ-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 γ-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.
format Articulo
Articulo
author Paredes, J. M.
Bosch-Ramon, V.
Romero, Gustavo Esteban
author_facet Paredes, J. M.
Bosch-Ramon, V.
Romero, Gustavo Esteban
author_sort Paredes, J. M.
title Spectral energy distribution of the γ-ray microquasar LS 5039
title_short Spectral energy distribution of the γ-ray microquasar LS 5039
title_full Spectral energy distribution of the γ-ray microquasar LS 5039
title_fullStr Spectral energy distribution of the γ-ray microquasar LS 5039
title_full_unstemmed Spectral energy distribution of the γ-ray microquasar LS 5039
title_sort spectral energy distribution of the γ-ray microquasar ls 5039
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/83217
work_keys_str_mv AT paredesjm spectralenergydistributionofthegraymicroquasarls5039
AT boschramonv spectralenergydistributionofthegraymicroquasarls5039
AT romerogustavoesteban spectralenergydistributionofthegraymicroquasarls5039
bdutipo_str Repositorios
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