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Abstract: In the past ten years of regular operations, a new generation of Cherenkovtelescopes have established binary systems as a new class of Very High Energygamma-ray VHE emitters. Particle acceleration in these systems may occureither in an accretion-powered jet microquasar or in the shock between apulsar wind and a stellar wind wind-wind. This paper describes thephenomenology of the three VHE binaries PSR~B1259-63, LS 5039 and LS I +61 303.Two other objects may belong to this new class: HESS J0632+057 is a point-likevariable VHE source whose multiwavelength behaviour resembles that of the otherbinaries, whereas Cyg X-1 is a well-known accreting system which may have beendetected in VHE during a flaring episode. The paper concludes with a review ofthe latest searches for other binaries with Cherenkov telescopes, with specialemphasis on Cyg X-3.



Autor: Juan Cortina

Fuente: https://arxiv.org/



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