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

被引：29

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

页码：517 / 524

页数：8

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