- 著者
- 小島 康次 本城 誠二 亀井 伸照 岡崎 敦男 大谷 通順 山田 誠治 岡崎 敦男 OKAZAKI Atsuo 大谷 通順 OTANI Michiyori 山田 誠治 YAMADA Seiji
- 出版者
- 北海学園大学学術研究会
- 雑誌
- 学園論集 = The journal of Hokkai-Gakuen University (ISSN:03857271)
- 巻号頁・発行日
- no.175, pp.1-29, 2018-03
- 著者
- 早崎 公威 岡崎 敦男
- 出版者
- 日本流体力学会
- 雑誌
- 日本流体力学会年会講演論文集 (ISSN:13428004)
- 巻号頁・発行日
- vol.2003, pp.112-113, 2003-07-28
We study the accretion onto the neutron star in Be/X-ray binaries, using the 3D SPH code and the data from the simulations by Okazaki et al. (2002) for a coplanar system 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. The disk shrinks after the periastron passage of the Be star and restores its radius afterwards. While the mass-capture rate by the neutron star has a regular, strong dependence on the orbital phase, the orbital modulation in the accretion rate slowly gradually decreases. Our simulations show that the truncated Be disk model for Be/X-ray binaries is consistent with the observed X-ray behavior.