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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

References

Barcons, X., & Fabian, A.C. (1989): MNRAS 237, 119 Google Scholar
Bloemen, J.B.G.M. (1987): ApJ 322, 694 Google Scholar
Breitschwerdt, D., McKenzie, J.F., & Volk, H.J. (1993): A&A 269, 54 Google Scholar
Burrows, D.N., & Mendenhall, J.A. (1991): Nature 351, 629 Google Scholar
Kahn, F.D. (1994): Ap&SS 216, 325 Google Scholar
Lampton, M., Margon, B., & Bowyer, S. (1976): ApJ 208, 177 Google Scholar
Landini, M., & Monsignori Fossi, B.C. (1990): A&A 82, 229 Google Scholar
Lieu, R., Quenby, J.J., Sidher, S.D., Sumner, T.J., Willingale, R., West, R.G., Harris, A.W., Snowden, S.L., & Bickert, K. (1992): ApJ 397, 158 CrossRefGoogle Scholar
Pildis, R.A., & McGaugh, S.S. (1996): ApJL 470, 77 Google Scholar
Sidher, S.D., Sumner, T.J., Quenby, J.J., & Gambhir, M. (1996): A&A 305, 308 Google Scholar
Sidher, S.D., Sumner, T.J., & Quenby, J.J. (1997): in preparationGoogle Scholar
Snowden, S.L., Mebold, U., Hirth, W., Herbstmeier, U., & Schmitt, J.H.M.M. (1991): Science 252, 1529 CrossRefGoogle Scholar
Soltan, A.M., Hasinger, G., Egger, R., Snowden, S., & Trümper, J. (1996): A&A 320, 685 Google Scholar
Sumner, T.J., Sidher, S.D., & Quenby, J.J. (1997): in preparationGoogle Scholar
Suto, Y., Makishima, K., Ishisaki, Y., & Ogasaka, Y. (1996): ApJL 461, 33 CrossRefGoogle Scholar