Published October 1987
| Version v1
Journal article
Long-term gamma-ray spectral variability of Cygnus X-1
- 1. California Institute of Technology, Pasadena
Description
Data from HEAO 3 observations of 0.05-10-MeV gamma-ray emission from Cyg X-1 during two 90-d periods (in fall 1979 and spring 1980) are compiled in tables and graphs and analyzed statistically to determine the temporal and spectral variability. It is found that a steady increase in 100-keV emission is accompanied by a decrease (and eventual disappearance) of MeV emission. The mechanisms which could theoretically be responsible for these phenomena are discussed. 28 references
Additional details
Publishing Information
- Journal Title
- Astrophys. J.
- Journal Volume
- 321
- Series
- Astrophys. J.
- Journal Page Range
- L117-L122
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19043176
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BINARY STARS; BLACK HOLES; COSMIC X-RAY SOURCES; GAMMA SPECTRA; RELATIVISTIC PLASMA; VARIATIONS
- Descriptors DEC
- COSMIC RAY SOURCES; PLASMA; SPECTRA; STARS