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Mandatory Fields
Golden, A;Brisken, WF;Thorsett, SE;Benjamin, RA;Goss, WM
BALTIC ASTRONOMY
Implications of a VLBA parallax for PSR B0656+14
2005
January
Published
1
WOS: 1 ()
Optional Fields
436
439
Using the VLBA we have determined the parallax of the radio pulsar PSR B0656+14 to be pi = 3.47 +/- 0.36 mas, yielding a distance of 288(-27)(+33) PC. This constrains existing models of thermal C-ray emission from the neutron star's photosphere yielding R infinity similar to 7-8.5 km for simple blackbody models, and radii between similar to 13 and similar to 20 km with more realistic fits to a magnetized hydrogen atmosphere. Astrometric and age constrains argue in favor of a definite association with the Monogem Ring SNR. The latter's distance and age are consistent with the predictions of a model for the primary cosmic ray energy spectrum in which the 'knee' feature is produced by a single dominant source.
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