Observations of 4U 1700-37 in the X-ray experiment on a "PROGNOZ-9" mission.
Abstract
Results are reported of observations of the X-ray binary 4U1700 - 37 carried out practically continuously for 73 days in the X-ray experiment on the Prognoz-9 mission. Average light curves were obtained in 10-50, 25-50, and 50-100 keV energy ranges with about 2-h time resolution. The duration of the eclipses in the 10-50 keV energy range was about 12 h (about 0.14 of the full phase). Phase dependences of spectral hardness ratios indicate the constant nature of the system spectrum.
- Publication:
-
Pisma v Astronomicheskii Zhurnal
- Pub Date:
- May 1991
- Bibcode:
- 1991PAZh...17..410K
- Keywords:
-
- Eclipsing Binary Stars;
- Light Curve;
- X Ray Binaries;
- X Ray Spectra;
- Prognoz Satellites;
- Stellar Spectra;
- X Ray Astronomy;
- Astrophysics