PASJ: Publications of the Astronomical Society of Japan | |
Stellar wind accretion and accretion disk formation: Applications to neutron star high-mass X-ray binaries | |
Nakamura, Kenji1  Karino, Shigeyuki2  Taani, Ali3  | |
[1] Department of Mechanical Engineering, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-ku, Fukuoka, Fukuoka 813-8503, Japan;Faculty of Science and Engineering, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-ku, Fukuoka, Fukuoka 813-8503, Japan;Physics Department, Faculty of Science, Al-Balqa Applied University, 19117 Salt, Jordan | |
关键词: X-rays: binaries; X-rays: individual; stars: neutron; accretion, accretion disks; | |
DOI : 10.1093/pasj/psz034 | |
学科分类:天文学(综合) | |
来源: Oxford University Press | |
【 摘 要 】
Recent X-ray observations have revealed the complexity and diversity of high-mass X-ray binaries (HMXBs). This diversity challenges a classical understanding of the accretion process on to the compact objects. In this study, we reinforce the conventional concept of the nature of wind-fed accretion on to a neutron star considering the geometrical effect of radiatively accelerated wind, and re-evaluate the transported angular momentum by using a simple wind model. Our results suggest that even in an OB-type HMXB fed by stellar wind, a large amount of angular momentum could be transported to form an accretion disk due to the wind-inhomogeneity, if the binary separation is tight enough and/or the stellar wind is slow. We apply our model to actual systems such as LMC X-4 and OAO 1657−415, and discuss the possibility of disk formations in these systems.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910253408782ZK.pdf | 1369KB | download |