The proper motion, age, and initial spin period of PSR J0538+2817 in S147

M. Kramer, A. G. Lyne, G. Hobbs, O. Löhmer, P. Carr, C. Jordan, A. Wolszczan

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We present results of the timing observations of the 143 ms pulsar PSR J0538+2817 that provide a proper-motion measurement clearly showing an association of the pulsar with the supernova remnant S147. We measure a proper motion of 67-22+48 mas yr-1, implying a transverse velocity of v = 385-130+260 km s-1. We derive an age of the pulsar and S147 of only 30 ± 4 kyr, which is a factor of 20 times less than the pulsar's characteristic age of τ c = 620 kyr. This age implies an initial spin period of P 0 = 139 ms, close to the present pulse period and a factor of several larger than what is usually inferred for birth periods. Implications for recent X-ray detections of this pulsar are discussed.

Original languageEnglish (US)
Pages (from-to)L31-L34
JournalAstrophysical Journal
Issue number1 II
StatePublished - Aug 10 2003

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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