Mass-Capture Rate by the Neutron Star in Be/X-Ray Binaries

Details Mass-Capture Rate by the Neutron Star in Be/X-Ray Binaries Mass-Capture Rate by the Neutron Star in Be/X-Ray Binaries

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..20..144o&link_type=abstract

Compact Binaries in the Galaxy and Beyond, Proceedings of the conference held 17-22 November, 2003 in La Paz, Baja California Su

Astronomy and Astrophysics

Astronomy

1

Accretion, Accretion Disks, Binaries: Close, Hydrodynamics, Stars: Emission-Line, Be, X-Rays: Stars

Scientific paper

We study the interaction between the Be-star disk and the neutron star in Be/X-ray binaries by three dimensional SPH simulations. We find that the resonant truncation of the Be disk works except for systems with extremely high orbital eccentricity or large misalignment angles between the Be disk and the orbital plane. Owing to the truncation, the mass-capture rate by the neutron star is sensitive both to the orbital eccentricity and to the angle of misalignment. It is single-peaked in coplanar systems and in systems with small misalignment angles, whereas it becomes double-peaked in systems with large misalignment angles.

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