ROSAT observations of the radio and gamma-ray pulsar PSR 1706-44

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dc.creatorBecker, W.
dc.creatorBarzier, K. T. S.
dc.creatorTruemper, J.
dc.date1995-01-04
dc.date.accessioned2026-07-07T02:19:39Z
dc.date.available2026-07-07T02:19:39Z
dc.descriptionWe report on the detection of PSR 1706-44 in two ROSAT-PSPC observations. The recorded source counts are unpulsed with a $2σ$ pulsed fraction upper limit of 18%. Spectral analysis did not distinguish between black-body and power law models; however, we argue that the lack of pulsations and the similarity in the pulsar's spin parameters to those of the Vela pulsar favour a power law model $dN/dE\propto E^{-2.4\pm 0.6}$ and indicate synchrotron emission from a pulsar-powered nebula as the origin of the detected X-radiation. The X-ray flux derived for the power law model is f_x=3.2^{+6.5}_{-1.8} x E-12 erg/ s/ cm^2 within the 0.1-2.4 keV energy range. An upper limit for the neutron star's surface temperature is put at Log T_s^\infty \sim 6.03 K for a neutron star with a medium stiff equation of state (FP-model with M=1.4 Mo, R=10.85 km). Slightly different values for $T_s^\infty$ are computed for the various neutron star models available in the literature, reflecting the difference in the equation of state. No soft X-ray emission is detected from the supernova remnant G343.1-2.3, proposed to be associated with PSR 1706-44.
dc.description7 pages and picture in tared uuencoded and compressed ps-format
dc.identifierhttps://arxiv.org/abs/astro-ph/9501007
dc.identifierhttp://arxiv.org/abs/astro-ph/9501007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9950
dc.subjectAstrophysics
dc.titleROSAT observations of the radio and gamma-ray pulsar PSR 1706-44
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