Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...355.1053m&link_type=abstract
Astronomy and Astrophysics, v.355, p.1053-1059 (2000)
Astronomy and Astrophysics
Astrophysics
30
Stars: Neutron, Stars: Pulsars: Individual: Psr J0218+4232, X-Rays: Stars
Scientific paper
We present the results of a BeppoSAX observation of PSR J0218+4232 which, for the first time, provides detailed information on the pulsar's temporal and spectral emission properties in the broad band 1-10 keV. We detected X-ray pulses with a pulsed fraction of 73+/-12%. The pulse profile is characterized by two peaks phase separated by Delta phi =0.47+/-0.05. The pulsed spectrum is best described by a power-law of photon index 0.61+/-0.32 with an unabsorbed (2-10 keV) X-ray flux of 4.1x10-13 erg cm-2 s-1 implying a luminosity of L_x = 1.3x 1032 Theta ; (d/5.7;kpc)2 erg s-1 and an X-ray efficiency of L_x/dot {E}=4.8x 10-4 Theta ; (d/5.7;kpc)2 where Theta is the solid angle spanned by the emission beam.
Becker Walter
Cusumano Giancarlo
Hermsen Willem
Kuiper Lucien
Lyne Andrew G.
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