Bosch i Ramon, ValentíBarkov, M. V.Mignone, AndreaBordas Coma, Pol2020-06-082020-06-082017-08-020035-8711https://hdl.handle.net/2445/164720HESS J0632+057 is an eccentric gamma-ray Be binary that produces non-thermal radio, Xrays, GeV and very high-energy gamma-rays. The non-thermal emission of HESS J0632+057 is modulated with the orbital period, with a dominant maximum before apastron passage. The nature of the compact object in HESS J0632+057 is not known, although it has been proposed to be a young pulsar as in PSR B1259-63, the only gamma-ray emitting high-mass binary known to host a non-accreting pulsar. In this letter, we present hydrodynamical simulations of HESS J0632+057 in the context of a pulsar and a stellar wind interacting in an eccentric binary, and propose a scenario for the non-thermal phenomenology of the source. In this scenario, the non-thermal activity before and around apastron is linked to the accumulation of non-thermal particles in the vicinity of the binary, and the sudden drop of the emission before apastron is produced by the disruption of the two-wind interaction structure, allowing these particles to escape efficiently. In addition to providing a framework to explain the nonthermal phenomenology of the source, this scenario predicts extended, moving X-ray emitting structures similar to those observed in PSR B1259-631 p.application/pdfeng(c) Bosch i Ramon, Valentí et al., 2017Raigs XRaigs gammaEstels binaris de raigs XHidrodinàmicaX-raysGamma raysX-ray binariesHydrodynamicsinfo:eu-repo/semantics/article6740832020-06-08info:eu-repo/semantics/openAccess