Microquasars and unidentified EGRET sources: the case of LS5039

J.M. Paredes, J. Martí, M. Ribo, M. Massi
Universitat de Barcelona, Spain
Universidad de Jaen, Spain
Universidad de Barcelona, Spain
Max Planck Institut fur Radioastronomie, Germany

LS 5039 is a massive x-ray binary with persistent radio emission at a distance of 3.1 kpc. Recent high resolution radio observations with the VLBA reveal that LS 5039 is resolved into bipolar jets emanting from a central core, revealing its microquasar nature. This system also appears to be associated with the EGRET source 3EG J1824-1514. The association with the $\gamma$-ray source is further supported by LS 5039 being the only bright x-ray and radio source within the EGRET 95% confidence contour.


josepmp@am.ub.es