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Exploring the accretion-induced evolution of the spin period and magnetic field strength of Be/X-ray Pulsars
Ye, Chang-Qing1; Wang, De-Hua1; Zhang, Cheng-Min2,3,4; Zhang, Jian-Wei5
2020-07-16
Source PublicationASTROPHYSICS AND SPACE SCIENCE
ISSN0004-640X
Volume365Issue:7Pages:8
AbstractBased on the detected spin periods (P) and inferred magnetic field strengths (B) by the cyclotron resonance scattering features, we analyze the B - P properties of Be/X-ray Pulsars (BeXPs). We find that the P distribution of BeXPs exhibits a bimodal feature separated at P similar to 40 s, where the average spin period of the BeXPs with P > 40 s (< P > similar to 267 s) is larger than that of the sources with P < 40 s (< P > similar to 10 s) by about one magnitude of order. Meanwhile, the average magnetic field strength of the long period BeXPs (< B > similar to 4.9 x 10(12) G) is higher than that of the short period sources (< B > similar to 2.7 x 10(12) G) by a factor of similar to 2. We try to explain these phenomena by the accretion-induced evolution process, and find that for the neutron star (NS) with the initial magnetic field strength of B-0 similar to 10(12.2) - 10(13) G, when it accretes about Delta M similar to 10(-6.5) M-circle dot companion matter, its spin period can shorten from P-0 similar to 1000 s to P similar to 260 s, while its magnetic field strength decays little. Furthermore, when the NS accretes about Delta M similar to 10(-5.5)M(circle dot) matter, its spin period can shorten to P similar to 10 s, while its magnetic field strength decays by half. Finally, we also notice that as the continuing of the accretion process in Be/X-ray binary, when its NS accretes about similar to 10(-3)M(circle dot) mater, it has the possibility to evolve to the double neutron star.
KeywordX-rays binaries Stars neutron Pulsars general Stars magnetic field
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation
DOI10.1007/s10509-020-03841-2
WOS KeywordRESONANCE SCATTERING FEATURE ; CYCLOTRON ABSORPTION-LINE ; X-RAY ; NEUTRON-STAR ; BINARY PULSAR ; DISCOVERY ; SPECTRUM ; DECAY ; OSCILLATIONS ; POPULATIONS
Language英语
Funding ProjectNational Natural Science Foundation of China[11703003] ; National Natural Science Foundation of China[U1938117] ; National Natural Science Foundation of China[U1731238] ; Guizhou Provincial Science and Technology Foundation[[2020]1Y016]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provincial Science and Technology Foundation ; Guizhou Provincial Science and Technology Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000549601000001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82714
Collection中国科学院国家天文台
Corresponding AuthorWang, De-Hua
Affiliation1.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
2.Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
4.Natl Astron Observ, Key Lab Radio Astron, Beijing 100101, Peoples R China
5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Ye, Chang-Qing,Wang, De-Hua,Zhang, Cheng-Min,et al. Exploring the accretion-induced evolution of the spin period and magnetic field strength of Be/X-ray Pulsars[J]. ASTROPHYSICS AND SPACE SCIENCE,2020,365(7):8.
APA Ye, Chang-Qing,Wang, De-Hua,Zhang, Cheng-Min,&Zhang, Jian-Wei.(2020).Exploring the accretion-induced evolution of the spin period and magnetic field strength of Be/X-ray Pulsars.ASTROPHYSICS AND SPACE SCIENCE,365(7),8.
MLA Ye, Chang-Qing,et al."Exploring the accretion-induced evolution of the spin period and magnetic field strength of Be/X-ray Pulsars".ASTROPHYSICS AND SPACE SCIENCE 365.7(2020):8.
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