On the nature of the AGILE galactic transient sources

Context. The Italian gamma-ray satellite AGILE has recently reported, the detection of some variable high-energy sources likely of galactic origin. These sources do not have any obvious counterpart at lower energies. Aims. We propose that these sources are produced in proton-dominated jets of galact...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Romero, Gustavo Esteban, Vila, G. S.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Astronómicas
Gamma rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82775
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82775
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: theory
Radiation mechanisms: non-thermal
X-rays: binaries
spellingShingle Ciencias Astronómicas
Gamma rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
Romero, Gustavo Esteban
Vila, G. S.
On the nature of the AGILE galactic transient sources
topic_facet Ciencias Astronómicas
Gamma rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
description Context. The Italian gamma-ray satellite AGILE has recently reported, the detection of some variable high-energy sources likely of galactic origin. These sources do not have any obvious counterpart at lower energies. Aims. We propose that these sources are produced in proton-dominated jets of galactic microquasars. Methods. We develop a model for microquasar jets that takes into account both primary leptons and protons and all relevant radiative processes, including secondary particle emission and gamma-ray attenuation due to pair creation in the jet. Results. We obtain spectral energy distributions that correspond to what is observed by AGILE, with most of the power concentrated between 100 MeV and 10 GeV and reaching luminosities of 1034-35 erg s-1. We make detailed spectral predictions that can be tested by the Fermi, gamma-ray telescope in the immediate future. Conclusions. We conclude that hadronic jets in galactic accreting sources can be responsible for the variable unidentified gamma-ray sources detected by AGILE.
format Articulo
Articulo
author Romero, Gustavo Esteban
Vila, G. S.
author_facet Romero, Gustavo Esteban
Vila, G. S.
author_sort Romero, Gustavo Esteban
title On the nature of the AGILE galactic transient sources
title_short On the nature of the AGILE galactic transient sources
title_full On the nature of the AGILE galactic transient sources
title_fullStr On the nature of the AGILE galactic transient sources
title_full_unstemmed On the nature of the AGILE galactic transient sources
title_sort on the nature of the agile galactic transient sources
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/82775
work_keys_str_mv AT romerogustavoesteban onthenatureoftheagilegalactictransientsources
AT vilags onthenatureoftheagilegalactictransientsources
bdutipo_str Repositorios
_version_ 1764820488614313990

Ejemplares similares