High-Resolution X-Ray Observations of the Central Region of M31 with the ROSAT Satellite
Abstract
A 48,000-sec observation of M31's central 34 arcmin, using the Rosat HRI, has led to the detection of 86 X-ray sources with luminosities above 1.4 x 10 exp 36 ergs/sec; of these, 18 sources are identified with globular clusters and two with SNRs. An extrapolation of the cumulative luminosity distribution to fainter luminosities indicates that only about 15-26 percent of the diffuse X-ray emission in the bulge is attributable to faint unresolved sources from this distribution. The spatial distribution and number density of X-ray sources in M31 appear to be very different from those of our Galaxy.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1993
- DOI:
- 10.1086/172779
- Bibcode:
- 1993ApJ...410..615P
- Keywords:
-
- Andromeda Galaxy;
- Galactic Nuclei;
- Rosat Mission;
- Spaceborne Astronomy;
- X Ray Astronomy;
- X Ray Sources;
- Diffuse Radiation;
- Emission Spectra;
- Galactic Bulge;
- Point Sources;
- Spatial Distribution;
- Supernova Remnants;
- Astrophysics;
- GALAXIES: INDIVIDUAL MESSIER NUMBER: M31;
- GALAXIES: NUCLEI;
- X-RAYS: GALAXIES