Variability of Scorpius X-1 according to observations from Salyut 4

Details Variability of Scorpius X-1 according to observations from Salyut 4 Variability of Scorpius X-1 according to observations from Salyut 4

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sval....2..225m&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 2, Dec. 1976, p. 568-573.) Soviet Astronomy Letters, vol. 2, Nov.-Dec. 1976, p. 225-227

Astronomy and Astrophysics

Astronomy

Binary Stars, Neutron Stars, Satellite-Borne Instruments, X Ray Sources, Interstellar Extinction, Salyut Space Station, Spectrum Analysis, Stellar Models, X Ray Spectra, X Ray Spectroscopy

Scientific paper

Results are presented for observations of Sco X-1 conducted on two different days with the Filin X-ray spectrometer aboard the Salyut 4 station. On one day, strong emission variability in the energy range from 0.2 to 2 keV was observed which may be interpreted as being due to the appearance of an additional 'soft' source. On the other day, a slow variation in the source's spectral characteristics was detected without any substantial change in the mean flux value. These results are evaluated in terms of a model where Sco X-1 is a neutron star in a binary system.

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