中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2317-2320.doi: 10.1088/1674-1056/17/6/064

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    下一篇

Effect of superstrong magnetic fields on thermonuclear reaction rates on the surface of magnetars

刘宏林, 罗志全, 赖祥军, 刘晶晶   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • 收稿日期:2007-12-03 修回日期:2008-01-04 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10778719); the Scientific Research and Fund of Sichuan Provincial Education Department, China (Grant No 2006A079) and the Science and Technological Foundation of China West No

Effect of superstrong magnetic fields on thermonuclear reaction rates on the surface of magnetars

Liu Hong-Lin(刘宏林), Luo Zhi-Quan(罗志全)† ,Lai Xiang-Jun(赖祥军), and Liu Jing-Jing(刘晶晶)   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • Received:2007-12-03 Revised:2008-01-04 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10778719); the Scientific Research and Fund of Sichuan Provincial Education Department, China (Grant No 2006A079) and the Science and Technological Foundation of China West No

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摘要： A simple and efficient screening model for studying the effects of superstrong magnetic fields (such as those of magnetars) on thermonuclear reaction rates on magnetar surfaces is proposed in this paper. The most interesting thermonuclear reactions, including hydrogen burning by the CNO cycle and helium burning by the triple alpha reaction, are investigated on the surface of magnetars. We find that the superstrong magnetic fields can increase the thermonuclear reaction rates by many orders of magnitude. The enhancement may have a dramatic effect on the thermonuclear runaways and bursts on the surfaces of magnetars.

Abstract: A simple and efficient screening model for studying the effects of superstrong magnetic fields (such as those of magnetars) on thermonuclear reaction rates on magnetar surfaces is proposed in this paper. The most interesting thermonuclear reactions, including hydrogen burning by the CNO cycle and helium burning by the triple alpha reaction, are investigated on the surface of magnetars. We find that the superstrong magnetic fields can increase the thermonuclear reaction rates by many orders of magnitude. The enhancement may have a dramatic effect on the thermonuclear runaways and bursts on the surfaces of magnetars.

Key words: nucleosynthesis, strong magnetic fields, neutron stars

中图分类号:  (Magnetic and electric fields; polarization of starlight)

  • 97.10.Ld
25.55.-e (3H-, 3He-, and 4He-induced reactions) 27.20.+n (6 ≤ A ≤ 19) 95.30.Cq (Elementary particle processes) 97.10.Cv (Stellar structure, interiors, evolution, nucleosynthesis, ages) 97.30.Fi (Chemically peculiar stars (Ap, Am, etc.))