Mass of the compact object in the Be/gamma-ray binaries LSI+61303 and MWC 148
Abstract
We estimate the mass of the compact object in the gamma-ray binaries LSI+61303 and MWC 148, using the latest data for the inclination, orbital motion and assuming that the orbital plane coincides with the equatorial plane of the Be star. For LSI+61303 we find the mass of the compact object to be most likely in the range 1.3 Msun < M2 < 2.0 Msun, which means that it is probably a neutron star. For MWC 148, we find the mass of the compact object in a higher range, 2.1 Msum < M2 < 7.3 Msun, which increases the chances for this system to host a black hole companion.
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