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Title:
PSR J1453+1902 and the radio luminosities of solitary versus binary millisecond pulsars
Authors:
Lorimer, D. R.; McLaughlin, M. A.; Champion, D. J.; Stairs, I. H.
Affiliation:
AA(Department of Physics, West Virginia University, PO Box 6315, Morgantown, WV 26506, USA), AB(Department of Physics, West Virginia University, PO Box 6315, Morgantown, WV 26506, USA), AC(McGill University Physics Department, Montreal, QC, Canada H3A2T8), AD(Department of Physics & Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC, Canada V6T 1Z1)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 379, Issue 1, pp. 282-288. (MNRAS Homepage)
Publication Date:
07/2007
Origin:
MNRAS
MNRAS Keywords:
pulsars: general, pulsars: individual: PSR J1453+1902
DOI:
10.1111/j.1365-2966.2007.11946.x
Bibliographic Code:
2007MNRAS.379..282L

Abstract

We present 3 yr of timing observations for PSR J1453+1902, a 5.79-ms pulsar discovered during a 430-MHz drift-scan survey with the Arecibo telescope. Our observations show that PSR J1453+1902 is solitary and has a proper motion of 8 +/- 2 mas yr-1. At the nominal distance of 1.2 kpc estimated from the pulsar's dispersion measure, this corresponds to a transverse speed of 46 +/- 11 km s-1, typical of the millisecond pulsar population. We analyse the current sample of 55 millisecond pulsars in the Galactic disc and revisit the question of whether the luminosities of isolated millisecond pulsars are different from their binary counterparts. We demonstrate that the apparent differences in the luminosity distributions seen in samples selected from 430-MHz surveys can be explained by small-number statistics and observational selection biases. An examination of the sample from 1400-MHz surveys shows no differences in the distributions. The simplest conclusion from the current data is that the spin, kinematic, spatial and luminosity distributions of isolated and binary millisecond pulsars are consistent with a single homogeneous population.
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