Observations of intense X-ray bursts from CYG X-1

Details Observations of intense X-ray bursts from CYG X-1 Observations of intense X-ray bursts from CYG X-1

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pazh....2..235k&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal, vol. 2, May 1976, p. 235-239. In Russian.

Astronomy and Astrophysics

Astronomy

1

Binary Stars, Spaceborne Astronomy, X Ray Sources, Black Holes (Astronomy), Bremsstrahlung, Energy Spectra, Salyut Space Station, X Ray Spectra

Scientific paper

During observations of Cyg X-1 with the X-ray telescope-spectrometer on board the Salyut-4 station, 19 intense bursts of X-ray emission were detected within 5 min on July 22, 1975. The flux in the bursts increased from 3 to 20 times. The burst spectrum may be fitted by a power law with kT values ranging from less than 1 keV to 4 keV and a hydrogen column density exceeding 10 to the 23rd power atoms/sq cm.

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