Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7832017d&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Cygnus Constellation, Oso-8, X Ray Spectra, Astronomy, Binary Stars, High Energy Interactions, Spectrum Analysis, X Ray Sources
Scientific paper
X-ray spectra of Cygnus XR-1 were measured with the scintillation spectrometer on board the OSO-8 satellite during a period of one and one-half to three weeks in each of the years from 1975 to 1977. Observations were made when the source was both in a high state and in a low state. Typical spectra of the source between 15 and 250 keV are presented. The observed pivoting effect is consistent with two temperature accretion disk models of the X-ray emitting region. No significant break in the spectrum occurred at energies up to 150 keV. The high state as defined in the 3 to 6 keV bandwidth was found to be the higher luminosity state of the X-ray source. One transition from a low to a high state occurred during observations. The time of occurrence of this and other transitions is consistent with the hypothesis that all intensity transitions occur near periastron of the binary system, and that such transitions are caused by changes in the mass transfer rate between the primary and the accretion disk around the secondary.
Crannell Carol J.
Dennis Brian R.
Dolan James F.
Frost Kenneth J.
Orwig Larry E.
No associations
LandOfFree
High energy X-ray spectra of cygnus XR-1 observed from OSO-8 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High energy X-ray spectra of cygnus XR-1 observed from OSO-8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High energy X-ray spectra of cygnus XR-1 observed from OSO-8 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-946277