UV-Optical Observations of Pulsars with post-COSTAR HST

Details UV-Optical Observations of Pulsars with post-COSTAR HST UV-Optical Observations of Pulsars with post-COSTAR HST

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.7801s&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #78.01; Bulletin of the American Astronomical Society, Vol. 26, p.1441

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We have carried out post-COSTAR HST observations with the FOC/96 to search for UV and optical emission from 3 nearby pulsars (PSR 0656+14, PSR 0950+08, and PSR 1929+10) spanning a range in age between 1 times 10(5) - 2 times 10(7) years. All three pulsars were observed with the F130LP filter, and for PSR 1929+10 observations were also obtained for the F342W (U-band) and F430W (B-band) filters. Probable candidates have been detected and count rates determined. The count rates exceed by several orders of magnitude those expected from thermal radiation emitted at the surface of the neutron star, as estimated from ROSAT observations. This radiation must therefore be of a non-thermal origin, and its intensity greatly exceeds predictions of existing phenomenological models. Non-thermal radiation appears to be a more common property of older pulsars than heretofore believed.

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