期刊
ASTROPHYSICS AND SPACE SCIENCE
卷 317, 期 3-4, 页码 175-179出版社
SPRINGER
DOI: 10.1007/s10509-008-9871-y
关键词
Neutron stars; Pulsars
资金
- INTAS Foundation [06-02-16025]
Here I discuss possible relations between free precession of neutron stars, Tkachenko waves inside them and glitches. I note that the proposed precession period of the isolated neutron star RX J0720.4-3125 (Haberl et al. 2006) is consistent with the period of Tkachenko waves for the spin period 8.4 s. Based on a possible observation of a glitch in RX J0720.4-3125 (van Kerkwijk et al. 2007), I propose a simple model, in which long period precession is powered by Tkachenko waves generated by a glitch. The period of free precession, determined by a NS oblateness, should be equal to the standing Tkachenko wave period for effective energy transfer from the standing wave to the precession motion. A similar scenario can be applicable also in the case of the PSR B1828-11.
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