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The magnetic field evolution of ULX NuSTAR J095551+6940.8 in M82-a legacy of accreting magnetar
Pan, Y. Y.1,2; Song, L. M.1; Zhang, C. M.2,3; Tong, H.4
2016-09-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume461Issue:1Pages:2-5
AbstractUltraluminous 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.
KeywordAccretion Accretion Discs Binaries: Close Stars: Evolution Stars: Magnetars Stars: Magnetic Field X-rays: Stars
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stw1041
WOS KeywordX-RAY PULSARS ; NEUTRON-STARS ; MILLISECOND RADIO ; BINARY ; CATALOG ; REPEATER ; ORIGIN ; GALAXY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000383272500001
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23624
Collection中国科学院紫金山天文台
Corresponding AuthorPan, Y. Y.
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
Recommended Citation
GB/T 7714
Pan, Y. Y.,Song, L. M.,Zhang, C. M.,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):2-5.
APA Pan, Y. Y.,Song, L. M.,Zhang, C. M.,&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),2-5.
MLA Pan, Y. Y.,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):2-5.
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