Evidence of a Largely Extended X-Ray Emission around M82
Abstract
Evidence of a 100 kpc scale X-ray halo around the starburst galaxy M82 has been obtained by Ginga observations. The halo extends northward from the nucleus with 2--10 keV luminosity of ~ 4times 10(39) erg s(-1) . Source contaminations have been shown to be very unlikely as the origin of the halo. The temperature is poorly constrained to be 1--11 keV, and the mass of the hot gas would be about 10(8) MO . Though this large-scale halo could be a result of mass outflow associated with the starburst, it is puzzling how such a hot, large halo can be confined around the galaxy.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- October 1990
- Bibcode:
- 1990PASJ...42L..75T
- Keywords:
-
- Halos;
- Irregular Galaxies;
- Starburst Galaxies;
- X Ray Sources;
- Disk Galaxies;
- Galactic Structure;
- H Ii Regions;
- Intergalactic Media;
- Japanese Spacecraft;
- Astrophysics;
- GALAXIES;
- M82;
- STAR FORMATION;
- X-RAY EMISSION