ISSN:
1562-6873
Keywords:
pulsars
;
neutron stars
;
X-ray sources
;
scattering
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We present the results of our comparative timing and spectral analysis of the high and low (off) states in the X-ray pulsar Her X-1 based on data from the ART-P telescope onboard the Granat observatory. A statistically significant (several mCrab) persistent flux with a simple power-law spectrum was detected during the low state. The spectral slope changed from observation to observation by almost a factor of 2. Pulsations were detected only during the high state of the source, when its flux was a factor of ∼25 larger than the low-state flux. The spectral shape of Her X-1 in its high state was complex, with the parameters depending on pulse phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.1323276
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