The drift model for AXPs and SGRs in the light of new observtional data

Details The drift model for AXPs and SGRs in the light of new observtional data The drift model for AXPs and SGRs in the light of new observtional data

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010arep...54..925m&link_type=abstract

Astronomy Reports, Volume 54, Issue 10, pp.925-931

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The latest observational data are analyzed to investigate their consistency with two known models for anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs): the magnetar and drift models. The results of spectral measurements disagree with the predictions of theories that assume the presence of super-strong magnetic fields on AXPs and SGRs and associated processes for the generation of electron-positron plasma in the upper layers of the neutron-star magnetosphere. We present arguments against the use of magnetic-dipole braking for these objects. The rotational periods P, period derivatives dP/dt, and magnetic fields B of known AXPs and SGRs are calculated for the drift model. The mean values of these parameters in the sample used are < P> = 108 ms and = 12.08. Overall, the measured profiles, polarizations, and spectra can be brought into agreement with the drift model.

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