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题名: The Landau level-superfluid modified factor and the overal soft X/gamma-ray efficiency coefficient of a magnetar
作者: Gao, Z. F.1, 2, 3; Peng, Q. H.4, 5; Wang, N.1, 2; Chou, C. K.6; Huo, W. S.7, 8
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2011-12-01
卷号: 336, 期号:2, 页码:427-439
关键词: Magnetar ; Landau levels ; Electron capture ; Neutron star ; Fermi energy
DOI: 10.1007/s10509-011-0791-x
文章类型: Article
英文摘要: As soon as the energies of electrons near the Fermi surface exceed Q, the threshold energy of inverse beta-decay, electron capture (EC) dominates inside a neutron star. The high-energy neutrons released by EC will destroy anisotropic (3) P (2) neutron Cooper pairs in the degenerate superfluid. By colliding with the neutrons produced in the process n+(na dagger na dagger")-> n+n+n, the kinetic energies of the neutrons released by EC will be transformed into thermal energy. A portion of this thermal energy will be transported from the star interior to the star surface by conduction, then converted to a thermal spectrum of soft X-rays and gamma-rays. By introducing two important parameters: the Landau level-superfluid modified factor and the overal soft X/gamma-ray efficiency coefficient, we compute the theoretical luminosity L (X) of a magnetar under our model and plot a diagram of L (X) as a function of magnetic field strength B. Numerical calculations based on our model agree well with the observed properties of magnetar candidates.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: XMM-NEWTON OBSERVATIONS ; X-RAY ; NEUTRON-STARS ; PULSAR XTE-J1810-197 ; GAMMA-REPEATERS ; FIELD-DECAY ; SUPERNOVA MODELS ; RADIO-EMISSION ; XTE J1810-197 ; LIGHT-CURVE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000297359900016
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15969
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi Xinjiang 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
5.Nanjing Univ, Minist Educ, Key Lab Astron & Astrophys, Nanjing 210093, Peoples R China
6.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
7.Xinjiang Univ, Sch Phys, Urumqi Xinjiang 830011, Peoples R China
8.Xinjiang Univ, Natl Astron Observ, Joint Ctr Astrophys, Urumqi Xinjiang 830011, Peoples R China
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