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Intensity Variations of the Soft X-ray Background: the Boundary Structure of the Local Hot Bubble at Low Galactic Latitudes

Published online by Cambridge University Press:  12 April 2016

S. Park ,
J.P. Finley  and
S.L. Snowden
S. Park
Affiliation:
Department of Physics, Purdue University, 1396 Physics Building, West Lafayette, IN. 47907, USA
J.P. Finley
Affiliation:
Department of Physics, Purdue University, 1396 Physics Building, West Lafayette, IN. 47907, USA
S.L. Snowden
Affiliation:
NASA/Goddard Space Flight Center, Code 662, Greenbelt, MD. 20771, USA Universities Space Research Association, USA

Abstract

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42 ROSAT PSPC pointed observations in the Galactic plane (l ~ 4° – 26°) 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 ¼ keV band, which imply a likely influence from a clumpy boundary shell of the LHB in the observed ¼ keV band X-ray background. The possible origins of such a clumpy boundary structure of the LHB are discussed.

Type
Part VI Distant Hot Gas, SXRB Fluctuations, Dust, Gamma-rays
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 325 - 328
Copyright
Copyright © Springer-Verlag 1998

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