Observations of the pulsar PSR 1509-58 with the SIGMA telescope

Details Observations of the pulsar PSR 1509-58 with the SIGMA telescope Observations of the pulsar PSR 1509-58 with the SIGMA telescope

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286..838l&link_type=abstract

Astronomy and Astrophysics 286, 838-840 (1994)

Astronomy and Astrophysics

Astrophysics

10

X-Rays: Stars, Gamma Rays: Observations, Pulsars: Individual: Psr 1509-58

Scientific paper

The isolated pulsar PSR 1509-58 has been detected by the coded-aperture hard X-ray/soft γ-ray SIGMA telescope after 192 hours of observations in 1990-1993. The source exhibits, in the 40-300 keV energy range, a photon spectrum well fitted by a power law with an index -0.9+/-0.6, slightly harder than that of the pulsed spectrum reported by BATSE in the same energy interval. Taking the distance to be 4.2 kpc, the isotropic source luminosity is 6 10^35^erg/s in the 40-300 keV energy interval, or 3 % of the total pulsar rotational energy loss. This makes PSR 1509-58 by far the most efficient producer of hard X-rays among the few pulsars detected so far in this energy range.

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