Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4

We present a general self-consistent lepto/hadronic jet model for the non-thermal electromagnetic emission of microquasars. The model is applied to the low-mass microquasar (LMMQ) GX 339-4 and predicts its high-energy features. We assume that both leptons and hadrons are accelerated up to relativist...

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Detalles Bibliográficos
Autores principales: Vila, Gabriela Soledad, Romero, Gustavo Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Ciencias Astronómicas
Gamma-rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
X-rays: individual: GX 339-4
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82538
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82538
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
X-rays: individual: GX 339-4
spellingShingle Ciencias Astronómicas
Gamma-rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
X-rays: individual: GX 339-4
Vila, Gabriela Soledad
Romero, Gustavo Esteban
Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
topic_facet Ciencias Astronómicas
Gamma-rays: theory
Radiation mechanisms: non-thermal
X-rays: binaries
X-rays: individual: GX 339-4
description We present a general self-consistent lepto/hadronic jet model for the non-thermal electromagnetic emission of microquasars. The model is applied to the low-mass microquasar (LMMQ) GX 339-4 and predicts its high-energy features. We assume that both leptons and hadrons are accelerated up to relativistic energies by diffusive shock acceleration and calculate their contribution to the electromagnetic spectrum through all main radiative processes. The radiative contribution of secondary particles (pions, muons and electron-positron pairs) is included. We use a set of simultaneous observations in radio and X-rays to constrain the model parameters and find the best fit to the data. We obtain different spectral energy distributions that can explain the observations, and make predictions for the high-energy emission. Observations with gamma-ray instruments like Fermi can be used to test the model and determine the proton content of the jets. Finally, we estimate the positron injection in the surrounding medium. Our findings support the suggested association between LMMQs and the observed distribution of the 511 keV line flux observed by INTEGRAL.
format Articulo
Articulo
author Vila, Gabriela Soledad
Romero, Gustavo Esteban
author_facet Vila, Gabriela Soledad
Romero, Gustavo Esteban
author_sort Vila, Gabriela Soledad
title Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
title_short Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
title_full Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
title_fullStr Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
title_full_unstemmed Leptonic/hadronic models for electromagnetic emission in microquasars: The case of GX 339-4
title_sort leptonic/hadronic models for electromagnetic emission in microquasars: the case of gx 339-4
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/82538
work_keys_str_mv AT vilagabrielasoledad leptonichadronicmodelsforelectromagneticemissioninmicroquasarsthecaseofgx3394
AT romerogustavoesteban leptonichadronicmodelsforelectromagneticemissioninmicroquasarsthecaseofgx3394
bdutipo_str Repositorios
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