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Paper: PSR B1951+32 and SNR CTB 80: Association Confirmed
Volume: 271, Neutron Stars in Supernova Remnants
Page: 57
Authors: Migliazzo, J. M.; Gaensler, B. M.; Backer, D. C.; Stappers, B. W.; Strom, R. G.; van der Swaluw, E.
Abstract: Using the Very Large Array, we have measured the position of the radio pulsar B1951+32 relative to nearby background radio sources at four epochs between 1989 and 2000. These data show a clear proper motion for the pulsar of 25+/-4 mas/yr at a position angle 252+/-7 degrees (north through east), corresponding to a transverse velocity 240+/-40 km/s. This confirms that the pulsar is moving away from the center of its associated supernova remnant, the first time that such a result has been demonstrated. We find the measured motion implies a pulsar age of 64+/-18 kyr, less than its characteristic age of 107 kyr. This discrepancy can be explained if the initial spin period of the pulsar was 27+/-6 ms.
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