Intensity transitions in CYG XR-1 observed at high energies from OSO 8

Details Intensity transitions in CYG XR-1 observed at high energies from OSO 8 Intensity transitions in CYG XR-1 observed at high energies from OSO 8

Jun 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.267..813d&link_type=abstract

Nature, vol. 267, June 30, 1977, p. 813-815.

Astronomy and Astrophysics

Astronomy

18

X Ray Sources, X Ray Spectra, Astronomical Models, Oso-8, Satellite Observation, Satellite-Borne Instruments, Spectrum Analysis, Stellar Mass Accretion, X Ray Spectroscopy

Scientific paper

The observed transitions at energies above 20 keV show that the spectrum of Cyg XR-1 exhibits the pivoting effect during intensity transitions expected from two-temperature accretion disk models of the X-ray emitting region. Cyg XR-1 was observed with the high-energy X-ray spectrometer on board the OSO-8 satellite from November 11-19, 1975 and from October 27 to November 15, 1976 (excluding the period from November 1 to November 7, 1976).

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