Disk-assisted Spin-down of Young Radio Pulsars | Zendy

Kristen Menou | Zendy; Rosalba Perna | Zendy; Lars Hernquist | Zendy

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Disk-assisted Spin-down of Young Radio Pulsars

Author(s) -

Kristen Menou,

Rosalba Perna,

Lars Hernquist

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/320927

Subject(s) - pulsar , physics , astrophysics , neutron star , supernova , dipole , spin (aerodynamics) , supernova remnant , radiation , rotational energy , magnetic dipole , range (aeronautics) , nuclear physics , atomic physics , quantum mechanics , thermodynamics , materials science , composite material

We present a model for the spindown of young radio pulsars in which theneutron star loses rotational energy not only by emitting magnetic dipoleradiation but also by torquing a surrounding accretion disk produced bysupernova fallback. The braking index predicted in our model is in general lessthan n=3 (the value for pure dipole magnetic radiation), in agreement with thereported values of n<3 for five young radio pulsars. With an accuracy of 30% orbetter, our model reproduces the age, braking index and third frequencyderivative of the Crab pulsar for a disk accretion rate in the range 3 x 10^16- 10^17 g/s.Comment: minor changes, final version accepted to ApJ

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