Salyut 4 observations of soft X rays from Hercules X-1

Details Salyut 4 observations of soft X rays from Hercules X-1 Salyut 4 observations of soft X rays from Hercules X-1

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sval....2..150b&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 2, Aug. 1976, p. 386-391.) Soviet Astronomy Letters, vol. 2, July-Aug. 1976, p. 150-152

Astronomy and Astrophysics

Astronomy

1

Pulsars, Radiant Flux Density, Spaceborne Astronomy, Stellar Radiation, X Ray Astronomy, X Ray Stars, Grazing Incidence Telescopes, Salyut Space Station

Scientific paper

The soft X-rays emitted by Her X-1 in the 0.16-0.28-keV energy range were measured with the grazing-incidence RT-4 telescope on the Salyut 4 spacecraft. The measurements were made about 1 day after the start of the 'on' state of the 35-day cycle. A flux density of 0.6 photon per sq cm/sec per keV was recorded, considerably lower than that reported by other authors 2-3 days after the start of the 'on' state. The pulsed component contributes 15-20% of the X-ray flux.

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