Fluctuations in the Diffuse Soft X-ray Background; Probably of Galactic Halo Origin
Abstract
Soft X-ray background data from the ROSAT PSPC have been fitted by a model including emission from the local bubble, embedded hot gas within the disk, hot gas in the Galactic halo and extra-galactic emission, together with local and disk absorption. In all directions a halo component at 10^{6.2} K (0.2 keV) is required for an acceptable fit. The halo emission measure shows spatial variability and the global trend suggests a disk-like planar rather than more extended spherical distribution. New values for the emission measure within the local bubble are derived.
- Publication:
-
IAU Colloq. 166: The Local Bubble and Beyond
- Pub Date:
- 1998
- DOI:
- 10.1007/BFb0104743
- Bibcode:
- 1998LNP...506..333S