The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar

doi:10.1093/mnras/stw1041

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar
	Pan YY(潘元月); Song LM(宋黎明); Pan, YY; Song, LM; Zhang, CM; Tong, H
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016
卷号	461 期号:1 页码:2
关键词	accretion accretion discs binaries: close stars: evolution stars: magnetars stars: magnetic field X-rays: stars
DOI	10.1093/mnras/stw1041
通讯作者	潘元月
英文摘要	Ultraluminous X-ray sources are usually believed to be black holes with mass about 102-3M(circle dot). However, the recent discovery of NuSTAR J095551+ 6940.8 in M82 by Bachetti et al. shows that it holds the spin period P = 1.37 s and period derivative. P approximate to -2 x 10(-10) s s(-1), which provides a strong evidence that some ultraluminous X-ray sources could be neutron stars. We obtain that the source may be an evolved magnetar according to our simulation by employing the model of accretion induced the polar magnetic field decay and standard spin-up torque of an accreting neutron star. The results show that NuSTAR J095551+ 6940.8 is still in the spin-up process, and the polar magnetic field decays to about 4.5 x 10(12) Gafter accreting similar to 10(-2.5) M-circle dot, while the strong magnetic field exists in the out-polar region, which could be responsible for the observed low field magnetar. The ultra luminosity of the source can be explained by the beaming effect and two kinds of accretion-radial random accretion and disc accretion. Since the birth rate of magnetars is about ten per cent of the normal neutron stars, we guess that several ultraluminous X-ray sources should share the similar properties to that of NuSTAR J095551+6940.8.
语种	英语
WOS记录号	WOS:000383272500001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260826]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Pan YY,Song LM,Pan, YY,et al. The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,461(1):2.
APA	潘元月,宋黎明,Pan, YY,Song, LM,Zhang, CM,&Tong, H.(2016).The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,461(1),2.
MLA	潘元月,et al."The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 461.1(2016):2.