Evento
Non-thermal radiation from Cygnus X-1 corona
Colaboradores:
Romero, Gustavo Esteban
; Aharonian, Felix A.; Paredes, Josep Maria; Vila, Gabriela Soledad
Tipo del evento:
Congreso
Nombre del evento:
High-Energy Phenomena in Relativistic Outflows II (HEPRO II)
Fecha del evento:
26/10/2009
Institución Organizadora:
Grupo de Astrofísica Relativista y Radioastronomía;
Título de la revista:
International Journal of Modern Physics D
Editorial:
World Scientific
ISSN:
0218-2718
Idioma:
Inglés
Clasificación temática:
Resumen
Cygnus X-1 was the first X-ray source widely accepted to be a black hole candidateand remains among the most studied astronomical objects in its class. The detection ofnon-thermal radio, hard X-rays and gamma rays reveals the fact that this kind of objectsare capable of accelerating particles up to very high energies.In order to explain the electromagnetic emission from Cygnus X-1 in the low-hardstate we present a model of a black hole corona with both relativistic lepton and hadroncontent. We characterize the corona as a two-temperature hot plasma plus a mixed nonthermalpopulation in which energetic particles interact with magnetic, photon and matterfields. Our calculations include the radiation emitted by secondary particles (pions,muons and electron/positron pairs). Finally, we take into account the effects of photonabsorption. We compare the results obtained from our model with data of Cygnus X-1obtained by the COMPTEL instrument.
Palabras clave:
BLACK HOLE
,
CORONA
,
GAMMA-RAYS
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Eventos(IAR)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Non-thermal radiation from Cygnus X-1 corona; High-Energy Phenomena in Relativistic Outflows II (HEPRO II); Buenos Aires; Argentina; 2009; 783-789
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