4 papers · 1 filter
Leptonic secondary emission in a hadronic microquasar model
M. Orellana, P. Bordas, V. Bosch-Ramon +2
Context: It has been proposed that the origin of the very high-energy photons emitted from high-mass X-ray binaries with jet-like features, so-called microquasars (MQs), is related…
Accretion vs colliding wind models for the gamma-ray binary LS I +61 303: an assessment
G. E. Romero, A. T. Okazaki, M. Orellana +1
LS I +61 303 is a puzzling Be/X-ray binary with variable gamma-ray emission at up TeV energies. The nature of the compact object and the origin of the high-energy emission are uncl…
Very high energy gamma-ray emission from X-ray transients during major outbursts
M. Orellana, G. E. Romero, L. J. Pellizza +1
Context: Some high mass X-ray binaries (HMXB) have been recently confirmed as gamma-ray sources by ground based Cherenkov telescopes. In this work, we discuss the gamma-ray emissio…
On the nature of the unidentified MeV gamma-ray source GRO 1411-64
Gustavo E. Romero, Mariana Orellana, Diego F. Torres
A recent analysis of COMPTEL data has revealed the existence of an unidentified and variable gamma-ray source, designated GRO J1411-64, at MeV energies in the galactic plane (Zhang…