INVESTIGADORES
ROMERO Gustavo Esteban
congresos y reuniones científicas
Título:
Episodic gamma-ray and neutrino emission from the low mass X-ray binary GRO J0422+32
Autor/es:
VIEYRO, F. L; SESTAYO, Y.; ROMERO, G. E. ; PAREDES, J. M.
Lugar:
Heidelberg
Reunión:
Congreso; HIGH ENERGY GAMMA-RAY ASTRONOMY: 5th International Meeting on High Energy Gamma-Ray Astronomy; 2012
Resumen:
GRO J0422+32 is a member of the class of low-mass X-ray binary (LMXB)
sources, discovered during an outburst in 1992. Along the entire episode
(∼ 230 days) a persistent power-law spectral component extending up to ∼
1 MeV was observed. These results suggest that non-thermal processes
must be at work in the system. We apply a corona model to describe the
spectrum of GRO J0422+32 during the flaring phase. We study relativistic
particle interactions solving the transport equations for all type of
particles self-consistently. We fit the electromagnetic emission during
the plateau phase of the event and estimate the emission during an
energetic episode, as well as the neutrino production. Our work leads to
predictions that can be tested by the new generation of very high
energy gamma-ray instruments.