Very high-energy gamma-ray emission from X-ray transients during major outbursts

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Fil: Orellana, Mariana D. Comision de Investigaciones Científicas; Argentina

Detalles Bibliográficos
Autores principales: Orellana, Mariana Dominga, Romero, Gustavo E., Pellizza González, Leonardo J., Vidrih, S.
Lenguaje:Inglés
Publicado: EDP Sciences 2007
Materias:
Astronomía
X-ray: Binaries
Gamma-Rays: Theory
Stars: Individual: A0535+26
Acceso en línea:https://www.aanda.org/articles/aa/abs/2007/15/aa6238-06/aa6238-06.html
https://arxiv.org/abs/astro-ph/0701695
http://hdl.handle.net/11336/21951
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2835
http://dx.doi.org/10.1051/0004-6361:20066238
Aporte de:
Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN) de Universidad Nacional de Río Negro
id I65-R171-20.500.12049-2835
record_format dspace
spelling I65-R171-20.500.12049-28352023-09-13T15:32:40Z application/pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ 2007-01-14 Fil: Orellana, Mariana D. Comision de Investigaciones Científicas; Argentina Fil: Orellana, Mariana D. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Orellana, Mariana D. Universidad Nacional de Río Negro; Argentina Fil: Orellana, Mariana D. Instituto Argentino de Radioastronomia; Argentina Fil: Romero, Gustavo E. Comisión de Investigaciones Científicas; Argentina Fil: Romero, Gustavo E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Romero, Gustavo E. Instituto Argentino de Radioastronomia; Argentina Fil: Pellizza González, Leonardo J. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina Fil: Pellizza González, Leonardo J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Fil: Pellizza González, Leonardo J. Instituto de Astronomía y Física del Espacio; Argentina Fil: Vidrih, S. University of Cambridge; Reino Unido Very high-energy gamma-ray emission from X-ray transients during major outbursts Orellana, Mariana Dominga Romero, Gustavo E. Pellizza González, Leonardo J. Vidrih, S. Astronomía X-ray: Binaries Gamma-Rays: Theory Stars: Individual: A0535+26 Astronomía true Some high mass X-ray binaries (HMXB) have been recently confirmed as γ-ray sources by ground based Cherenkov telescopes. In this work, we discuss the γ-ray emission from X-ray transient sources formed by a Be star and a highly magnetized neutron star. This kind of systems can produce variable hadronic γ-ray emission through the mechanism proposed by Cheng and Ruderman, where a proton beam accelerated in the pulsar magnetosphere impacts the transient accretion disk. We choose as case of study the best known system of this class: A0535+26. Aims. We aim at making quantitative predictions about the very high-energy radiation generated in Be-X ray binary systems with strongly magnetized neutron stars. Methods. We study the gamma-ray emission generated during a major X-ray outburst of a HMXB adopting for the model the parameters of A0535+26. The emerging photon signal from the disk is determined by the grammage of the disk that modulates the optical depth. The electromagnetic cascades initiated by photons absorbed in the disk are explored, making use of the so-called “Approximation A” to solve the cascade equations. Very high energy photons induce Inverse Compton cascades in the photon field of the massive star. We implemented Monte Carlo simulations of these cascades, in order to estimate the characteristics of the resulting spectrum. Results. TeV emission should be detectable by Cherenkov telescopes during a major X-ray outburst of a binary formed by a Be star and a highly magnetized neutron star. The γ-ray light curve is found to evolve in anti-correlation with the X-ray signal. Orellana, Mariana D., Romero, Gustavo E., Pellizza González, Leonardo J. & Vidrih, S. (2007). Very high-energy gamma-ray emission from X-ray transients during major outbursts. EDP Sciences; Astronomy and Astrophysics; 465; 3; 703-709 0004-6361 1432-0746 https://www.aanda.org/articles/aa/abs/2007/15/aa6238-06/aa6238-06.html https://arxiv.org/abs/astro-ph/0701695 http://hdl.handle.net/11336/21951 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2835 http://dx.doi.org/10.1051/0004-6361:20066238 eng 465 Astronomy and Astrophysics EDP Sciences
institution Universidad Nacional de Río Negro
institution_str I-65
repository_str R-171
collection Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN)
language Inglés
orig_language_str_mv eng
topic Astronomía
X-ray: Binaries
Gamma-Rays: Theory
Stars: Individual: A0535+26
Astronomía
spellingShingle Astronomía
X-ray: Binaries
Gamma-Rays: Theory
Stars: Individual: A0535+26
Astronomía
Orellana, Mariana Dominga
Romero, Gustavo E.
Pellizza González, Leonardo J.
Vidrih, S.
Very high-energy gamma-ray emission from X-ray transients during major outbursts
topic_facet Astronomía
X-ray: Binaries
Gamma-Rays: Theory
Stars: Individual: A0535+26
Astronomía
description Fil: Orellana, Mariana D. Comision de Investigaciones Científicas; Argentina
author Orellana, Mariana Dominga
Romero, Gustavo E.
Pellizza González, Leonardo J.
Vidrih, S.
author_facet Orellana, Mariana Dominga
Romero, Gustavo E.
Pellizza González, Leonardo J.
Vidrih, S.
author_sort Orellana, Mariana Dominga
title Very high-energy gamma-ray emission from X-ray transients during major outbursts
title_short Very high-energy gamma-ray emission from X-ray transients during major outbursts
title_full Very high-energy gamma-ray emission from X-ray transients during major outbursts
title_fullStr Very high-energy gamma-ray emission from X-ray transients during major outbursts
title_full_unstemmed Very high-energy gamma-ray emission from X-ray transients during major outbursts
title_sort very high-energy gamma-ray emission from x-ray transients during major outbursts
publisher EDP Sciences
publishDate 2007
url https://www.aanda.org/articles/aa/abs/2007/15/aa6238-06/aa6238-06.html
https://arxiv.org/abs/astro-ph/0701695
http://hdl.handle.net/11336/21951
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2835
http://dx.doi.org/10.1051/0004-6361:20066238
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AT pellizzagonzalezleonardoj veryhighenergygammarayemissionfromxraytransientsduringmajoroutbursts
AT vidrihs veryhighenergygammarayemissionfromxraytransientsduringmajoroutbursts
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