Pulsar Braking Index: A Test of Emission Models? | Zendy

Renxin Xu | Zendy; G. J. Qiao | Zendy

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Pulsar Braking Index: A Test of Emission Models?

Author(s) -

Renxin Xu,

G. J. Qiao

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.639

H-Index - 201

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/324381

Subject(s) - pulsar , physics , magnetosphere , vela , astrophysics , magnetic dipole , rotation (mathematics) , rotational energy , dipole , generator (circuit theory) , magnetic field , mechanics , computational physics , classical mechanics , power (physics) , quantum mechanics , geometry , mathematics

Pulsar braking torques due to magnetodipole radiation and to unipolargenerator are considered, which results in braking index being less than 3 andcould be employed to test the emission models. Improved equations to obtainpulsar braking index and magnetic field are presented if we deem that therotation energy loss rate equals to the sum of the dipole radiation energy lossrate and that of relativistic particles powered by unipolar generator. Themagnetic field calculated by conventional way could be good enough but onlymodified by a factor of ~0.6 at most. Both inner and outer gaps may coexist inthe magnetosphere of the Vela pulsar.

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