A microquasar model applied to unidentified gamma-ray sources

Among unidentified gamma-ray sources in the galactic plane, there are some that present significant variability and have been proposed to be high-mass microquasars. To deepen the study of the possible association between variable low galactic latitude gamma-ray sources and microquasars, we have appl...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bosch-Ramon, V., Paredes, J. M., Romero, Gustavo Esteban, Torres, D. F.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Ciencias Astronómicas
Gamma-rays: observations
Gamma-rays: theory
Stars: winds, outflows
X-rays: binaries
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83231
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83231
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: winds, outflows
X-rays: binaries
spellingShingle Ciencias Astronómicas
Gamma-rays: observations
Gamma-rays: theory
Stars: winds, outflows
X-rays: binaries
Bosch-Ramon, V.
Paredes, J. M.
Romero, Gustavo Esteban
Torres, D. F.
A microquasar model applied to unidentified gamma-ray sources
topic_facet Ciencias Astronómicas
Gamma-rays: observations
Gamma-rays: theory
Stars: winds, outflows
X-rays: binaries
description Among unidentified gamma-ray sources in the galactic plane, there are some that present significant variability and have been proposed to be high-mass microquasars. To deepen the study of the possible association between variable low galactic latitude gamma-ray sources and microquasars, we have applied a leptonic jet model based on the microquasar scenario that reproduces the gamma-ray spectrum of three unidentified gamma-ray sources, 3EG J1735-1500, 3EG J1828+0142 and GRO J1411-64, and is consistent with the observational constraints at lower energies. We conclude that if these sources were generated by microquasars, the particle acceleration processes could not be as efficient as in other objects of this type that present harder gamma-ray spectra. Moreover, the dominant mechanism of high-energy emission should be synchrotron self-Compton (SSC) scattering, and the radio jets may only be observed at low frequencies. For each particular case, further predictions of jet physical conditions and variability generation mechanisms have been made in the context of the model. Although there might be other candidates able to explain the emission coming from these sources, microquasars cannot be excluded as counterparts. Observations performed by the next generation of gamma-ray instruments, like GLAST, are required to test the proposed model.
format Articulo
Articulo
author Bosch-Ramon, V.
Paredes, J. M.
Romero, Gustavo Esteban
Torres, D. F.
author_facet Bosch-Ramon, V.
Paredes, J. M.
Romero, Gustavo Esteban
Torres, D. F.
author_sort Bosch-Ramon, V.
title A microquasar model applied to unidentified gamma-ray sources
title_short A microquasar model applied to unidentified gamma-ray sources
title_full A microquasar model applied to unidentified gamma-ray sources
title_fullStr A microquasar model applied to unidentified gamma-ray sources
title_full_unstemmed A microquasar model applied to unidentified gamma-ray sources
title_sort microquasar model applied to unidentified gamma-ray sources
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/83231
work_keys_str_mv AT boschramonv amicroquasarmodelappliedtounidentifiedgammaraysources
AT paredesjm amicroquasarmodelappliedtounidentifiedgammaraysources
AT romerogustavoesteban amicroquasarmodelappliedtounidentifiedgammaraysources
AT torresdf amicroquasarmodelappliedtounidentifiedgammaraysources
AT boschramonv microquasarmodelappliedtounidentifiedgammaraysources
AT paredesjm microquasarmodelappliedtounidentifiedgammaraysources
AT romerogustavoesteban microquasarmodelappliedtounidentifiedgammaraysources
AT torresdf microquasarmodelappliedtounidentifiedgammaraysources
bdutipo_str Repositorios
_version_ 1764820488410890242

Ejemplares similares