NGC 4593 - a bright Seyfert galaxy with variable X-ray emission.
Abstract
Ariel 5 observations of the X-ray source 4U 1240 - 05 support suggestions that it should be identified with the galaxy NGC 4593 recently found to be type 1 Seyfert. Data on the source position and spectrum are presented. The X-ray intensity appears to have varied by a factor of more than two since the Uhuru observation.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 1979
- DOI:
- 10.1093/mnras/188.1.1P
- Bibcode:
- 1979MNRAS.188P...1B
- Keywords:
-
- Seyfert Galaxies;
- X Ray Sources;
- X Ray Spectra;
- Astronomical Catalogs;
- Astronomical Spectroscopy;
- Stellar Luminosity;
- Astrophysics;
- Seyfert Galaxies:X-Ray Sources;
- Spectra:X-Ray Sources;
- X-Ray Sources:Variations