Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

Files

517649.pdf (244.92 KB)

Document type

Article

Version

Accepted version

Publication date

2005

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/45337

High mass microquasars and low latitude gamma-ray sources

Journal Title

Authors

Director/Tutor

Journal ISSN

Volume Title

Related resource

http://dx.doi.org/10.1051/0004-6361:20041194

Abstract

Population studies of unidentified EGRET sources suggest that there exist at least three different populations of galactic gamma-ray sources. One of these populations is formed by young objects distributed along the galactic plane with a strong concentration toward the inner spiral arms of the Galaxy. Variability, spectral and correlation analysis indicate that this population is not homogeneous. In particular, there is a subgroup of sources that display clear variability in their gamma-ray fluxes on timescales from days to months. Following the proposal by Kaufman Bernad\'o et al. (2002), we suggest that this group of sources might be high-mass microquasars, i.e. accreting black holes or neutron stars with relativistic jets and early-type stellar companions. We present detailed inhomogeneous models for the gamma-ray emission of these systems that include both external and synchrotron self-Compton interactions. We have included effects of interactions between the jet and all external photon fields to which it is exposed: companion star, accretion disk, and hot corona. We make broadband calculations to predict the spectral energy distribution of these objects from radio up to GeV energies. The results and predictions can be tested by present and future gamma-ray instruments like INTEGRAL, AGILE, and GLAST.

Subject

Estels binaris de raigs X, Estels, Vents, Raigs gamma, Astrofísica

Subject (English)

X-ray binaries, Stars, Winds, Gamma rays, Astrophysics

Citation

Collections

Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

BOSCH I RAMON, Valentí, ROMERO, Gustavo E. and PAREDES I POY, Josep Maria. High mass microquasars and low latitude gamma-ray sources. Astronomy and Astrophysics. 2005. Vol. 429, num. 1, pags. 267-276. ISSN 0004-6361. [consulted: 8 of August of 2026]. Available at: https://hdl.handle.net/2445/45337

Export metadata

JSON - METS

Share record