Gcrt J1745-3009: a Freely Precessing Pulsar?
نویسندگان
چکیده
A bursting radio source, GCRT J1745-3009, had been discovered by Hyman et al. (2005) near the direction of the Galaxy center. It bursts with a period of ∼ 77 min and a duration of ∼ 10 min. The source is very luminous during its burst state, which implies that it is not an incoherent emitter. It is still open to explain this phenomenon although a couple of scenarios had been proposed by Hyman et al. (2005). An alternative possibility is presented in this paper, that the source could be a radio pulsar which precesses with a large amplitude. The general behaviors observed can be reproduced in this precession-pulsar model. Some physical implications of the model is also discussed.
منابع مشابه
GCRT J1745-3009: A precessing radio pulsar?
A unique transient bursting radio source, GCRT J1745-3009, has been discovered (Hyman et al. 2005a) near the direction of the Galactic center. It is still an open question to explain this phenomenon, although some efforts to understand its nature have been made. This paper shows that most of the observed features can be reproduced by our proposed precessing pulsar model. It is found that the pr...
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