Variable gamma-ray emission from microblazars

M.M. KAUFMAN BERNADÓ; G.E.ROMERO; I.F.MIRABEL

Corsica, Francia

Workshop; New Views on MICROQUASARS, the Fourth Microquasars Workshop; 2002

We propose a model for gamma-ray emitting microblazars based on the Compton interaction of a relativistic electron-positron plasma, ejected in a jet feature, with the UV-photon field provided by a high-mass stellar companion. Taking into account the gravitational effects of the star upon the accretion disk, we predict a jet precession which results in a variable, periodic, high-energy gamma-ray source. The specific case of Cygnus X-1 is briefly discussed.