The Weakly Magnetized Pulsar in Kes 79

Details The Weakly Magnetized Pulsar in Kes 79 The Weakly Magnetized Pulsar in Kes 79

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2606h&link_type=abstract

Chandra proposal ID #10500693

Physics

Scientific paper

Our X-ray timing studies of two X-ray pulsars in SNRs detected no braking of their rotation, implying upper limits on their surface dipole fields well below those of ordinary young pulsars. We proposed that weak B-fields related to slow natal spin may be the physical basis of the class of Central Compact Objects (CCOs) including Cas A, and the unseen pulsar in SN 1987A. We propose to continue our timing program on the CCO pulsar PSR J1852+0040 in Kes 79 to determine if it is spinning down at all and, if so, to measure its magnetic field by obtaining a coherent timing solution linking all previous data. B-fields as small as 1e10 G can be measured in this way. Alternatively, accretion of supernova debris through a fallback disk may be occurring, which would be detectable as torque noise.

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