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The Radius Estimation of Double Pulsar PSR J0737-3039A

Published online by Cambridge University Press:  21 February 2013

H. H. Zhao  and
L. M. Song
H. H. Zhao
Affiliation:
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China email: [email protected]
L. M. Song
Affiliation:
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China email: [email protected]
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Abstract

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We investigate the radius of the recycled pulsar in double pulsar PSR J0737-3039. In the standard accretion spin-up model, the recycled pulsar spin up continues until arriving at a minimum spin period, or so-called “equilibrium period”, which is related to stellar magnetic field, accretion rate, mass and radius. If present spin period is much longer than that at birth, the spin-down age can give the realistic true age estimation for normal pulsar J0737-3039B. Base on the above conditions, we estimate the radius of millisecond pulsar (MSP) J0737-3039A by assuming its true age is same as the spin-down age of its companion J0737-3039B. We obtained that the radius of J0737-3039A ranges approximately from 5 to 27 km.

Keywords

Pulsarcharacteristic agetrue ageequilibrium period
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 369 - 370
Copyright
Copyright © International Astronomical Union 2013

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