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High-Velocity Clouds and their Soft X-ray Emission

Published online by Cambridge University Press:  12 April 2016

J. Kerp ,
J. Pietz ,
P.M.W. Kalberla ,
W.B. Burton ,
R. Egger ,
M.J. Freyberg ,
Dap Hartmann  and
U. Mebold
J. Kerp
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
J. Pietz
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
P.M.W. Kalberla
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
W.B. Burton
Affiliation:
Sterrewacht Leiden, P.O. Box 9513, NL-2300 RA Leiden, The Netherlands
R. Egger
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1603, D-85740 Garching, Germany
M.J. Freyberg
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1603, D-85740 Garching, Germany
Dap Hartmann
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, U.S.A.
U. Mebold
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany

Abstract

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Diffuse excess ¼ keV soft X-ray emission was found to be positionally correlated with the column density distribution of the high velocity cloud (HVC) complex C (Kerp et al. 1996). Here we point out that the detected diffuse X-ray emission is indeed associated with the HVC phenomenon. For this purpose we study the ¼ keV radiation transfer as well as the H I column density distribution of HVCs and intermediate velocity clouds (IVCs) towards HVC complex C in detail. We present evidence that on arcmin scales the ¾ keV soft X-ray emission is positionally anticorrelated with the HVC column density distribution of an individual HVC filament of complex C.

Type
Part VIII High-Velocity Clouds, Galactic Halo Models, Observations of the LMC
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 455 - 466
Copyright
Copyright © Springer-Verlag 1998

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