Spectral and Timing Analysis of PSR 0656+14: The Nature of its ``Hard Tail''

Details Spectral and Timing Analysis of PSR 0656+14: The Nature of its ``Hard Tail'' Spectral and Timing Analysis of PSR 0656+14: The Nature of its ``Hard Tail''

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.0801g&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #08.01; Bulletin of the American Astronomical Society, Vol. 26, p.870

Astronomy and Astrophysics

Astronomy

Scientific paper

Pulsar PSR 0656+14 has a period of 385 ms and a dynamical age of 1.1times 10(5) years. The pulsar's rotational energy loss rate is 3.8times 10(34) erg s(-1) . Two observations of PSR 0656+14 have been done with the ROSAT PSPC. The data from the second, 12 ksec, ROSAT observation yield spectral fits that require two component models. A soft blackbody component (T ~ 8times 10(5) K) plus a harder, lower flux component best fits the spectrum. The harder component can be fit by a blackbody (T ~ 2times 10(6) K) or a powerlaw (alpha =2.7). The pulse shape, like PSR 1055-52 and Geminga, is observed to be energy dependent. Both the pulse arrival phase and pulsed fraction exhibit variations with energy. The total pulsed fraction is ~ 10%. A comparison between radio and X-ray pulse arrival phases will also be presented.

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