X-ray emission from normal galaxies
Abstract
The results of Einstein Observatory studies of X-ray emission from normal galaxies, including the LMC and SMC, M31, M33, M101, NGC 247, M81 and M100, and N253 are surveyed. The X-ray luminosity of normal galaxies is proportional to their optical luminosity, revealing no strong dependence on galaxy type. The number of individual sources detected are comparable to the number of sources expected on mass considerations. There are substantial numbers of X-ray sources in the Magellanic Clouds with luminosities in the range 10 to the 35th-36th ergs/s, lower than most X-ray binaries but higher than known uncollapsed stellar systems. About seven X-ray sources with luminosities of at least 10 to the 39th ergs/s in the 0.5-3.0 keV band have been found in the arms of nearby spiral galaxies.
- Publication:
-
Accretion-Driven Stellar X-ray Sources
- Pub Date:
- 1983
- Bibcode:
- 1983adsx.conf..117L
- Keywords:
-
- Galactic Radiation;
- Spaceborne Astronomy;
- X Ray Sources;
- Andromeda Galaxy;
- Astronomical Catalogs;
- Astronomical Maps;
- Galactic Structure;
- Globular Clusters;
- Magellanic Clouds;
- X Ray Binaries;
- Astrophysics