The accretion mass regimes in the gamma-ray binary LS I +61 303

M. ORELLANA; G.E. ROMERO; A.T. OKAZAKI; S.P. OWOCKI

Malargüe, Prov. Mendoza, Argentina

Congreso; 50 Reunión Anual de la Asociación Argentina de Astronomía; 2007

Asociación Argentina de Astronomía

LS I +61 303 is a puzzling Be/X-ray binary with variable emission up to TeV energies. The nature of the compact object and the origin of the high-energy emission are unclear.  The usual assumption of microquasar models for the source is that the accretion rate, is coupled to the jet power hence an energy budget constrain is imposed by the former. Here we compare the results of 3D-SPH simulations of the mass transference in LS I +61 303 with analytically obtained values spherical accretion. In terms of the position of the local maxima, both kind of estimates show a similar evolution along the orbit, but the accretion rates and the underlying physics are remarkably different.