Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-06-13
Astronomy and Astrophysics
Astrophysics
2 pages, to appear in the proceedings of the "New Century of X-ray Astronomy" symposium, ASP press
Scientific paper
Results of GRANAT/ART-P observations of three X-ray pulsars in non-pulsing states are presented: 1) a statistically significant non-pulsing flux with a simple power-law spectrum was detected during the ``off''- state of Her X-1; 2) a significant (13 $\sigma$) non-pulsing flux with a strong iron emission line at energies ~ 6.7-6.9 keV was detected during the eclipse ingress of Cen X-3; 3) a weak non-pulsing flux was detected during the X-ray eclipse of Vela X-1, which probably resulted from scattering of the pulsar emission in the stellar wind of an optical star.
Grebenev Sergei
Lutovinov Alexander A.
Sunyaev Rachid
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