PSR J1453 1902 and the radio luminosities of solitary versus binary millisecond pulsars - AstrophysicsReportar como inadecuado




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Abstract: We present 3 yr of timing observations for PSR J1453+1902, a 5.79-ms pulsardiscovered during a 430-MHz drift-scan survey with the Arecibo telescope. Ourobservations show that PSR J1453+1902 is solitary and has a proper motion of8(2) mas-yr. At the nominal distance of 1.2 kpc estimated from the pulsar-sdispersion measure, this corresponds to a transverse speed of 46(11) km-s,typical of the millisecond pulsar population. We analyse the current sample of55 millisecond pulsars in the Galactic disk and revisit the question of whetherthe luminosities of isolated millisecond pulsars are different from theirbinary counterparts. We demonstrate that the apparent differences in theluminosity distributions seen in samples selected from 430-MHz surveys can beexplained by small-number statistics and observational selection biases. Anexamination of the sample from 1400-MHz surveys shows no differences in thedistributions. The simplest conclusion from the current data is that the spin,kinematic, spatial and luminosity distributions of isolated and binarymillisecond pulsars are consistent with a single homogeneous population.



Autor: D.R. Lorimer, M.A. McLaughlin, D.J. Champion, I.H. Stairs

Fuente: https://arxiv.org/







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