On the Formation of Ultraluminous X-ray Sources with Neutron Star Accretors: the Case of M82 X-2
作者： Tassos Fragos , Tim Linden , Vicky Kalogera , Panos Sklias
DOI: 10.1088/2041-8205/802/1/L5
关键词: X-ray burster 、 X-ray binary 、 Binary system 、 Orbital period 、 Astrophysics 、 M82 X-2 、 Binary star 、 Neutron star 、 Astronomy 、 Intergalactic star 、 Physics
摘要: The recent discovery of a neutron star accretor in the ultra-luminous X-ray source M82 X-2 challenges our understanding high-mass binary formation and evolution. By combining population synthesis detailed mass-transfer models, however, we show that parameters are not surprising provided non-conservative mass transfer is allowed. Specifically, donor-mass lower limit orbital period measured for lie near most probable values predicted by systems such as should exist approximately 13% galaxies with star-formation history similar to M82. We conclude system formed likely less than 50 Myr old contains donor which had an initial 8-10 M$_\odot$, while NS's progenitor $8-25\,\rm M_{\odot}$ range. still currently resides on main sequence, capable continued MT thermal timescale, regime, long 400,000 years.
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