Are there many Be star binary X-ray pulsars in the galactic ridge ?
Abstract
Four transient X-ray sources were discovered during the scanning observations on the galactic ridge with the Ginga satellite. The X-ray intensities of these transient sources were several mCrab. The X-ray spectra were hard with significant low energy absorptions. These spectral features resemble the spectra of X-ray pulsars and their transient natures imply that they are likely to be Be star binary X-ray pulsars. The probability of discovering a new hard transient during a single ridge scan was found to be very high, which implies that there could be a large number of low luminosity hard transient sources in the galactic ridge.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- 1989
- Bibcode:
- 1989PASJ...41..483K
- Keywords:
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- B Stars;
- Milky Way Galaxy;
- Pulsars;
- Satellite Observation;
- X Ray Binaries;
- Energy Absorption;
- Japanese Space Program;
- X Ray Sources;
- X Ray Spectra;
- Astronomy