Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..20..230h&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
Accretion, Accretion Disks, X-Rays: Binaries, Stars: Emission Lines, Be, Binaries: General
Scientific paper
We investigate the accretion flow around the neutron star in Be/X-ray binaries, using a 3D SPH code and the data imported from simulations by Okazaki et al. (2002) and Okazaki & Hayasaki (2004) for both a coplanar system and a misaligned system in which the Be-star disk is inclined from the binary orbital plane by 30 degrees, with a short period ( P[orb] = 24.3 days) and moderate eccentricity (e = 0.34). We find that a non-steady accretion disk is formed around the neutron star in the misaligned case as well as in the coplanar case. The disk size in the misaligned system is significantly larger because of its higher angular momentum than that in the coplanar system. We also find that the disk also evolves via a two-stage process, which consists of the initial developing stage and the latar developed stage.
Hayasaki Kimitake
Okazaki Atsuo T.
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