Intensity Variations of the Soft X-ray Background: the Boundary Structure of the Local Hot Bubble at Low Galactic Latitudes
Abstract
42 ROSAT PSPC pointed observations in the Galactic plane (l~4^{\circ} - 26^{\circ}) are mosaicked in order to study the spatial structure of the X-ray emitting gas in the Local Hot Bubble (LHB). Degree scale X-ray intensity variations are detected at the +/-10% level in the 1/4 keV band, which imply a likely influence from a clumpy boundary shell of the LHB in the observed 1/4 keV band X-ray background. The possible origins of such a clumpy boundary structure of the LHB are discussed.
- Publication:
-
IAU Colloq. 166: The Local Bubble and Beyond
- Pub Date:
- 1998
- DOI:
- 10.1007/BFb0104741
- Bibcode:
- 1998LNP...506..325P