Published 1976
| Version v1
Report
Observations of Cygnus X-1 in its two intensity states by ANS
- 1. American Science and Engineering, Cambridge, MA
Description
The hard x-ray experiment (1 to 28 keV) on ANS, observed Cygnus X-1 in November 1974, and in May 1975, putting in evidence the two dramatically different states of this object. The average intensity in November was 15 cts/sec, and the observations showed remarkable features in the x-ray light curve and in the spectrum, which were correlated with the 5.6 days period of HDE226868. The May observations showed a count rate of approximately 80 to 100 cts/sec, with fluctuations up to approximately 130 cts/sec, uncorrelated with the spectroscopic binary. The May x-ray spectrum was much softer than the November one, and possibly was made up of two components
Additional details
Publishing Information
- Imprint Title
- X-ray binaries
- Journal Page Range
- p. 429-442.
- Report number
- CONF-7510169--
Conference
- Title
- Symposium on x-ray binaries.
- Dates
- 20 - 22 Oct 1975.
- Place
- Greenbelt, Maryland, United States of America (USA).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9364393
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COSMIC X-RAY SOURCES; X-RAY SPECTRA
- Descriptors DEC
- COSMIC RAY SOURCES; SPECTRA