Soft X-ray Observations of the Pulsar PSR 1055-52

Details Soft X-ray Observations of the Pulsar PSR 1055-52 Soft X-ray Observations of the Pulsar PSR 1055-52

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...182.6905o&link_type=abstract

American Astronomical Society, 182nd AAS Meeting, #69.05; Bulletin of the American Astronomical Society, Vol. 25, p.917

Astronomy and Astrophysics

Astronomy

Scientific paper

PSR 1055-52, a pulsar with a rotation period of 197 ms and a dynamic age of 5times 10(5) yr, has been observed with the ROSAT Position Sensitive Proportional Counter and the High Resolution Imager. The results show that X-ray emission of PSR 1055-52 is strongly pulsed at the radio period. There is a phase shift of ~ 120(deg) between the softer and harder photons (below and above ~ 0.5 keV respectively). The spectrum is soft and black-body like with an additional hard tail. A neutron star with surface temperature of ~ 7times 10(5) K and the power-law extension of the recently observed 100 MeV to 5 GeV gamma ray spectrum from GRO/EGRET (Fierro et al. 1993, preprint) fits the spectrum adequately. The contribution of a compact synchrotron nebula component above the 2('') resolution of the The High Resolution Imager is limited to less than 30% of the point-like source.

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