Aspherical supernova explosions and formation of compact black hole low-mass X-ray binaries

Details Aspherical supernova explosions and formation of compact black hole low-mass X-ray binaries Aspherical supernova explosions and formation of compact black hole low-mass X-ray binaries

2007-10-30

arxiv.org/abs/0710.5576v1

Astronomy and Astrophysics

Astrophysics

4 pages, accepted for publication in MNRAS Letters

Scientific paper

10.1111/j.1745-3933.2007.00412.x

It has been suggested that black-hole low-mass X-ray binaries (BHLMXBs) with short orbital periods may have evolved from BH binaries with an intermediate-mass secondary, but the donor star seems to always have higher effective temperatures than measured in BHLMXBs (Justham, Rappaport & Podsiadlowski 2006). Here we suggest that the secondary star is originally an intermediate-mass ($\sim 2-5 M_{\sun}$) star, which loses a large fraction of its mass due to the ejecta impact during the aspherical SN explosion that produced the BH. The resulted secondary star could be of low-mass ($\la 1 M_{\sun}$). Magnetic braking would shrink the binary orbit, drive mass transfer between the donor and the BH, producing a compact BHLMXB.

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