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Evidence for Magnetic Field Decay in the Slowest Known Be/X-ray Pulsars X Per and RX J0146.9+5121

Published online by Cambridge University Press:  12 April 2016

X.-D. Li  and
Z.-R. Wang
X.-D. Li
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, P. R.China
Z.-R. Wang
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210093, P. R.China

Abstract

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We argue that the slowest known Be/X-ray pulsars X Per and RX J0146.9+5121 currently possess relatively weak (≲ 1012 G) magnetic fields. Unless these pulsars were born rotating very slowly (initial periods longer than tens of seconds), in order to explain their long spin periods (~ 835 and ~ 1412 s, respectively), they must have had magnetic fields stronger than a few 1013 G; that is, their magnetic fields must have decayed.

Type
7. Interacting Binaries
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 723 - 726
Copyright
Copyright © Astronomical Society of the Pacific 2000

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