An accreting low magnetic field magnetar for the ultraluminous X-ray source in M82

被引：30
作者：
Tong, Hao [1 ]
机构：
[1] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2015年 / 15卷 / 04期
基金：
中国国家自然科学基金;
关键词：
accretion; pulsars: individual (NuSTAR J095551+6940.8); stars: magnetars; stars: neutron; NEUTRON-STAR; SWIFT J1822.3-1606; SGR 0418+5729; WIND BRAKING; XMM-NEWTON; PULSARS; DISCOVERY; OSCILLATIONS; EVOLUTION; RADIATION;
D O I：
10.1088/1674-4527/15/4/005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
One ultraluminous X-ray source in M82 has recently been identified as an accreting neutron star (named NuSTAR J095551+6940.8). It has a super-Eddington luminosity and is spinning up. An aged magnetar is more likely to be a low magnetic field magnetar. An accreting low magnetic field magnetar may explain both the super-Eddington luminosity and the rotational behavior of this source. Considering the effect of beaming, the spin-up rate is understandable using the traditional form of accretion torque. The transient nature and spectral properties of M82 X-2 are discussed. The theoretical range of periods for accreting magnetars is provided. Three observational appearances of accreting magnetars are summarized.
引用
收藏
页码：517 / 524
页数：8
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