LS I+61 303: microquasar or not microquasar?

Details LS I+61 303: microquasar or not microquasar? LS I+61 303: microquasar or not microquasar?

2007-12-11

arxiv.org/abs/0712.1832v1

Int.J.Mod.Phys.D17:1875-1881,2008

Astronomy and Astrophysics

Astrophysics

4 figs, 4 pages, contributing paper to the Conference "High Energy Processes in Relativistic Outflows", Dublin, September, 200

Scientific paper

10.1142/S0218271808013510

LS I +61 303 is a puzzling object detected from radio up to high-energy gamma-rays. Variability has recently been observed in its high-energy emission. The object is a binary system, with a compact object and a Be star as primary. The nature of the secondary and the origin of the gamma-ray emission are not clearly established at present. Recent VLBA radio data have been used to claim that the system is a Be/neutron star colliding wind binary, instead of a microquasar. We review the main views on the nature of LS I +61 303 and present results of 3D SPH simulations that can shed some light on the nature of the system. Our results support an accretion powered source, compatible with a microquasar interpretation.

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