ROSAT observations of the binary millisecond pulsar PSR J0751+1807

Details ROSAT observations of the binary millisecond pulsar PSR J0751+1807 ROSAT observations of the binary millisecond pulsar PSR J0751+1807

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282l..33b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 3, pp. L33-L36.

Astronomy and Astrophysics

Astronomy

15

Binaries: General, Stars: Individual: Rx J075109.7+180736, Stars: Neutron, Pulsars: Individual: Psr J0751+1807, X-Rays: General

Scientific paper

We report the discovery of the binary millisecond pulsar PSR J0751+1807 in the soft X-ray domain with ROSAT. The low number of source counts does not allow a detailed spectral modelling. Assuming an energy spectrum similar to that of PSR J0437-4715 implies, for the pulsar X-ray flux, f_x~1x10^-13 erg s^-1 cm^-2 within the 0.1-2.4 keV energy range. This corresponds to an X-ray luminosity of L_x~4.7x10^31 erg s^-1 if we adopt the dispersion measure based pulsar distance of 2 kpc. A photon arrival time analysis does not reveal significant X-ray pulses. A sine-wave fit to the folded light curve results in a 2sigma pulsed fraction upper limit of 35 per cent.

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