Multifrequency Behavior of Microquasars in the GeV--TeV era: A review

TL;DR

This review discusses the multifrequency gamma-ray emission from microquasars, emphasizing particle acceleration, emission mechanisms, and observational features in the GeV--TeV energy range.

Contribution

It provides a comprehensive overview of the physics of non-thermal emission in microquasars across different regions and energy bands, highlighting recent observational and theoretical developments.

Findings

Microquasars emit gamma-rays via leptonic and hadronic processes.

Jet termination regions and binary systems are significant non-thermal emitters.

Spectral and temporal behaviors are complex and energy-dependent.

Abstract

Microquasars are X-ray binaries that present non-thermal radio jets. Efficient particle acceleration can take place in different regions of the jets of microquasars. The accelerated particles can emit gamma-rays via leptonic or hadronic processes, with a complex spectral and temporal behavior. The jet termination region can be also an efficient non-thermal emitter, as well as, in high-mass microquasars, the region of the binary system outside the jet. In this work, I briefly describe the physics behind the non-thermal emission observed in microquasars at different scales, focusing in the GeV and TeV bands.