Modelling the observable behaviour of SXP 5.05
Modelling the observable behaviour of SXP 5.05
复制标题
对 SXP 5.05 的可观察行为进行建模
DOI:
10.1093/mnras/stz1037
复制
发表时间:
2019
影响因子:
4.8
通讯作者:
Brown R
中科院分区:
文献类型:
--
作者:
Brown R
SXP 5.05 is a Be/X-ray binary with a neutron star companion located in the Small Magellanic Cloud. It was first detected in 2013, and later that year, SXP 5.05 underwent a massive optical and X-ray outburst. This outburst dwarfs any other optical event that has been observed for this system during the last 5 yr. The large increase in optical brightness of the system implies an increase in the size and density of the Be star’s circumstellar disc. The X-ray data show two occultations of the neutron star per orbit and are not consistent with a neutron star passing behind the Be star, and hence the disc is responsible for these occultations. In this paper, we model the outburst of Be/neutron star binary SXP 5.05 as being due to a large increase in mass ejection by the Be star. The neutron star passes directly through the growing disc, and it is shown that the resulting obscuration can qualitatively explain the observed X-ray behaviour of the system. We find the only way to reproduce the time-scales of the observed optical behaviour of the system is to increase the mass ejection substantially for a short time (<2 orbits) and to decrease the viscosity during the event. The general behaviour of the observed X-ray and H α line emission are also reproduced by the model. However, the inferred mass ejection and viscosity needed to produce a sufficiently rapid increase of disc size are both higher than suggested by previous works.
登录
查看更多内容
DOI:
10.1007/s00159-013-0069-0
发表时间:
2003-10
影响因子:
3.5
作者:
J. Porter;T. Rivinius
通讯作者:
J. Porter;T. Rivinius
DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
J. Harris
通讯作者:
J. Harris
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
A. Okazaki;K. Hayasaki
通讯作者:
K. Hayasaki
DOI:
10.1088/2041-8205/792/2/l33
发表时间:
2014-08
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
R. Martin;C. Nixon;S. Lubow;P. Armitage;Daniel J. Price;S. Doğan;A. King
通讯作者:
R. Martin;C. Nixon;S. Lubow;P. Armitage;Daniel J. Price;S. Doğan;A. King
DOI:
10.1088/0004-637x/756/2/156
发表时间:
2012
期刊:
The Astrophysical Journal
影响因子:
--
作者:
X. Haubois;A. Carciofi;T. Rivinius;A. Okazaki;J. Bjorkman
通讯作者:
J. Bjorkman