On the Magnetic Field Evolution in Isolated Neutron Stars

Details On the Magnetic Field Evolution in Isolated Neutron Stars On the Magnetic Field Evolution in Isolated Neutron Stars

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...492..298l&link_type=abstract

Astrophysical Journal v.492, p.298

Statistics

25

Accretion, Accretion Disks, Stars: Magnetic Fields, Stars: Neutron, Stars: Statistics

Scientific paper

We examine the discrepancy between the theoretically expected number of detectable isolated old neutron stars (102-103), and the actually detected number of candidates (2-3). We argue that this discrepancy is explicable in terms of the suppression of accretion from the interstellar medium onto the old neutron stars. We show that for such a suppression to occur, a specific pattern for the magnetic field evolution in neutron stars is required. Strong magnetic fields (B >~ 1012 G) are required to decay rapidly, while fields of the order of 1010 G are required to remain constant in the absence of accretion. The required pattern agrees with recent theoretical models for magnetic field decay in neutron stars.

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