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American Astronomical Society, Astrophysical Journal, 1(812), p. 61, 2015

DOI: 10.1088/0004-637x/812/1/61

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Proper Motion and Timing of Two Unusual Pulsars: Calvera and 1E 1207.4-5209

Journal article published in 2015 by J. P. Halpern ORCID, E. V. Gotthelf ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Using pairs of images from the Chandra High-Resolution Camera we examine the proper motion of the central compact object (CCO) 1E 1207.4-5209 in the supernova remnant (SNR) PKS 1209-51/52, and the unusual pulsar Calvera that is possibly a CCO descendant. For 1E 1207.4-5209, an insignificant proper motion of 15+/-7 mas/yr is measured, corresponding to a corrected tangential velocity of