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Small-Scale Fluctuations and Anisotropies in the 1–3 keV X-Ray Background

Published online by Cambridge University Press:  08 February 2017

X. Barcons  and
A. C. Fabian
X. Barcons
Affiliation:
Department of Modern Physics University of Cantabria 39005 Santander Spain
A. C. Fabian
Affiliation:
Institute of Astronomy Madingley Road Cambridge CB3 OHA UK

Abstract

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The spatial distribution of the 1–3 keV X-ray background (XRB) in five Einstein Observatory Imaging Proportional Counter fields has been analyzed. The autocorrelation function does not exceed 9% on scales ~5′. The observed count probability distribution is then used to check the source number-flux distribution at faint levels. Agreement with the Einstein Observatory deep survey is obtained. A cutoff in the number-flux distribution for a Euclidean population of sources at a flux approximately one-half of the deep survey limit, previously suggested by Hamilton and Helfand (1987), is also inferred.

Type
IV. Extragalactic Background Radiation and Cosmology
Information
Symposium - International Astronomical Union , Volume 139: The Galactic and Extragalactic Background Radiation , 1990 , pp. 408 - 409
Copyright
Copyright © Kluwer 1990 

References

REFERENCES

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