The galactic ridge observed by Exosat
Warwick, R. S.; Watson, M. G.; Turner, M. J. L.; Willingale, R.
United Kingdom
Abstract
We have used Exosat to map the distribution of X-ray emission in the galactic plane. In addition to numerous point sources, the map reveals a narrow continuous ridge of emission which extends along the galactic plane either side of the galactic centre out to ~40° longitude. The origin of this feature remains uncertain although a major contribution from luminous discrete X-ray sources can be excluded.