X-ray and UV spectroscopy of Cygnus X-1 = HDE226868
- Author
- Becker, R. H.
- Published
- Feb 1, 1980.
- Physical Description
- 1 electronic document
- Additional Creators
- Serlemitsos, P. J., White, N. E., Pravdo, S. H., Mccluskey, B. G., Kondo, Y., Holt, S. S., and Boldt, E. A.
Online Version
- hdl.handle.net , Connect to this object online.
- Restrictions on Access
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary
- Observations are presented of Cygnus X-1 with the solid-state spectrometer on the Einstein Observatory. The X-ray spectra of two intensity dips viewed near superior conjunction did not exhibit increased photoelectric absorption. Rather the data support a model in which an increase in the electron scattering optical depth modifies both the observed spectrum and the intensity. The characteristic temperature of the intervening material is greater than 5 x 10 to the 7th power K. These measurements were in part simultaneous with observations by IUE. The ultra violet spectrum and intensity remained relatively constant during an X-ray intensity dip.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 19800014739.
Accession ID: 80N23228.
NASA-TM-80646. - Terms of Use and Reproduction
- No Copyright.
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