HER X-1 as seen in the ROSAT All-Sky survey

Details HER X-1 as seen in the ROSAT All-Sky survey HER X-1 as seen in the ROSAT All-Sky survey

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..339m&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)339-(12)342

Astronomy and Astrophysics

Astronomy

Astronomical Models, Light Curve, Neutron Stars, X Ray Astronomy, X Ray Binaries, X Ray Spectra, Black Body Radiation, Bremsstrahlung, Exosat Satellite, Proportional Counters, Rosat Mission, Sky Surveys (Astronomy)

Scientific paper

ROSAT performed the first, spectrally resolved, soft X-ray observations of Her X-1 in the SHORT-ON state of the 35-d cycle. The data were taken during the All-Sky survey covering the range 0.1-2.4 keV. The mean luminosity in the ROSAT bandpass is 1.5 x 1036 ergs/sec. Timing analysis of the data revealed a highly significant signal at a period of 1.237749(1) sec. Finally, we present evidence to support the hypothesis that the reduction in intensity during the SHORT-ON state is caused by hot matter absorption in the disk.

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