Evolution of superhigh magnetic fields of magnetars

被引：16
作者：
Gao, Z. F. [1 ,2 ,3 ]
Wang, N. [1 ]
Yuan, J. P. [1 ]
Jiang, L. [4 ]
Song, D. L. [5 ]
Qiao, E. L. [6 ]
机构：
[1] NAOC, Urumqi Observ, Urumqi 830011, Xinjiang, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
[4] XinJiang Educ Inst, Urumqi 830043, Xinjiang, Peoples R China
[5] Informat Engn Univ, Zhengzhou 450001, Henan, Peoples R China
[6] Yunnan Observ, Kunming 650000, Yunnan, Peoples R China
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2011年 / 333卷 / 02期
关键词：
Magnetar; Superhigh magnetic fields; Electron capture rate; SOFT GAMMA-REPEATERS; DIRECT URCA PROCESS; X-RAY; NEUTRON-STARS; SPIN-DOWN; EMISSION; PULSAR;
D O I：
10.1007/s10509-011-0664-3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we consider the effect of Landau levels on the decay of superhigh magnetic fields of magnetars. Applying (3) P (2) anisotropic neutron superfluid theory yield a second-order differential equation for a superhigh magnetic field B and its evolutionary timescale t. The superhigh magnetic fields may evolve on timescales similar to(10(6)-10(7)) yrs for common magnetars. According to our model, the activity of a magnetar may originate from instability caused by the high electron Fermi energy.
引用
收藏
页码：427 / 435
页数：9
相关论文
共 40 条
  • [1] Baiko DA, 1999, ASTRON ASTROPHYS, V342, P192
  • [2] BANDYOPADHYAY D, 1998, ARXIVASTROPH9804145
  • [3] Pulse frequency changes of 1E 2259+586 and the binary interpretation
    Baykal, A
    Swank, J
    [J]. ASTROPHYSICAL JOURNAL, 1996, 460 (01) : 470 - 477
  • [4] CANUTO V, 1971, SPACE SCI REV, V12, P3, DOI 10.1007/BF00172129
  • [5] Dense nuclear matter in a strong magnetic field
    Chakrabarty, S
    Bandyopadhyay, D
    Pal, S
    [J]. PHYSICAL REVIEW LETTERS, 1997, 78 (15) : 2898 - 2901
  • [6] 10 years of RXTE monitoring of the anomalous X-ray pulsar 4U 0142+61:: Long-term variability
    Dib, Rim
    Kaspi, Victoria M.
    Gavriil, Fotis P.
    [J]. ASTROPHYSICAL JOURNAL, 2007, 666 (02) : 1152 - 1164
  • [7] Dorofeev O. F., 1985, Pis'ma v Astronomicheskie Zhurnal, V11, P302
  • [8] FORMATION OF VERY STRONGLY MAGNETIZED NEUTRON-STARS - IMPLICATIONS FOR GAMMA-RAY BURSTS
    DUNCAN, RC
    THOMPSON, C
    [J]. ASTROPHYSICAL JOURNAL, 1992, 392 (01) : L9 - L13
  • [9] Duncan RC, 1996, AIP CONF PROC, P111, DOI 10.1063/1.50235
  • [10] Superfluidity in beta-stable neutron star matter
    Elgaroy, O
    Engvik, L
    HjorthJensen, M
    Osnes, E
    [J]. PHYSICAL REVIEW LETTERS, 1996, 77 (08) : 1428 - 1431
1234