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Fluctuations in the Diffuse Soft X-ray Background; Probably of Galactic Halo Origin

Published online by Cambridge University Press:  12 April 2016

T.J. Sumner ,
S.D. Sidher ,
J.J. Quenby ,
M. Hernandez ,
A. Mian ,
R. Jesseit  and
M. Gambhir
T.J. Sumner
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
S.D. Sidher
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
J.J. Quenby
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
M. Hernandez
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
A. Mian
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
R. Jesseit
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK
M. Gambhir
Affiliation:
Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ, UK

Abstract

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Soft X-ray background data from the ROSATPSPC 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 106.2 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.

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. 333 - 336
Copyright
Copyright © Springer-Verlag 1998

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