High-energy gamma-ray production in microquasars
Fil: Christiansen, Hugo. Universidade Estadual Do Ceara; Brasil
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| Lenguaje: | Inglés |
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2007
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| Acceso en línea: | http://ref.scielo.org/gsfhzh http://hdl.handle.net/11336/22323 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2826 http://dx.doi.org/10.1590/S0103-97332007000400012 |
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I65-R171-20.500.12049-2826 |
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I65-R171-20.500.12049-28262023-09-13T15:34:02Z application/pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ 2007-06 Fil: Christiansen, Hugo. Universidade Estadual Do Ceara; Brasil Fil: Romero, Gustavo E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Romero, Gustavo E. Comisión de Investigaciones Científicas; Argentina Fil: Romero, Gustavo E. Instituto Argentino de Radioastronomia; Argentina Fil: Orellana, Mariana D. Universidad Nacional de Río Negro; Argentina Fil: Orellana, Mariana D. Comisión 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. Instituto Argentino de Radioastronomía; Argentina High-energy gamma-ray production in microquasars Christiansen, Hugo Romero, Gustavo E. Orellana, Mariana Dominga Ciencias Físicas Microquasars Gamma rays Hadronic Models Binary Systems Ciencias Físicas true A hadronic model for gamma-ray production in microquasars is presented. Microquasars are galactic binary systems with jets, which have, presumably, hadronic components. We consider a microquasar formed by a neutron star that accretes matter from the equatorial wind of a Be primary star. The collision between the jet, emitted by the compact object, and the dense equatorial disk of the companion massive star is responsible for the gamma-ray production. Gamma-rays result from the decay of neutral pions produced in relativistic pp interactions arising from this collision all along the orbit. Assuming a simple, positional independent set of parameters, our calculations are consistent with a peak of gamma-ray flux at the periastron passage with a secondary maximum near apastron. Under this assumption, gamma-ray signals would be in contrast with the radio/X-ray outbursts which peak clearly after periastron. We finally calculate the opacity of the ambient photon field to the propagation of the gamma-rays. The spectral energy distribution appears strongly attenuated in a wide band (50 GeV - 50 TeV) due to local absorption. These spectral features should be detectable by an instrument like MAGIC through exposures integrated along several periastron passages. Christiansen, Hugo., Romero, Gustavo E. & Orellana, Mariana D. (2007). High-energy gamma-ray production in microquasars. Sociedad Brasileira Fisica. Brazilian Journal Of Physics; 37; 2B; 545-548 1678-4448 http://ref.scielo.org/gsfhzh http://hdl.handle.net/11336/22323 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2826 http://dx.doi.org/10.1590/S0103-97332007000400012 eng 37 Brazilian Journal Of Physics |
| 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 |
Ciencias Físicas Microquasars Gamma rays Hadronic Models Binary Systems Ciencias Físicas |
| spellingShingle |
Ciencias Físicas Microquasars Gamma rays Hadronic Models Binary Systems Ciencias Físicas Christiansen, Hugo Romero, Gustavo E. Orellana, Mariana Dominga High-energy gamma-ray production in microquasars |
| topic_facet |
Ciencias Físicas Microquasars Gamma rays Hadronic Models Binary Systems Ciencias Físicas |
| description |
Fil: Christiansen, Hugo. Universidade Estadual Do Ceara; Brasil |
| author |
Christiansen, Hugo Romero, Gustavo E. Orellana, Mariana Dominga |
| author_facet |
Christiansen, Hugo Romero, Gustavo E. Orellana, Mariana Dominga |
| author_sort |
Christiansen, Hugo |
| title |
High-energy gamma-ray production in microquasars |
| title_short |
High-energy gamma-ray production in microquasars |
| title_full |
High-energy gamma-ray production in microquasars |
| title_fullStr |
High-energy gamma-ray production in microquasars |
| title_full_unstemmed |
High-energy gamma-ray production in microquasars |
| title_sort |
high-energy gamma-ray production in microquasars |
| publishDate |
2007 |
| url |
http://ref.scielo.org/gsfhzh http://hdl.handle.net/11336/22323 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2826 http://dx.doi.org/10.1590/S0103-97332007000400012 |
| work_keys_str_mv |
AT christiansenhugo highenergygammarayproductioninmicroquasars AT romerogustavoe highenergygammarayproductioninmicroquasars AT orellanamarianadominga highenergygammarayproductioninmicroquasars |
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