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The X-ray Background as a Cosmological Tool

Published online by Cambridge University Press:  26 May 2016

X. Barcons ,
F. J. Carrera  and
M. T. Ceballos
X. Barcons
Affiliation:
Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain
F. J. Carrera
Affiliation:
Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain
M. T. Ceballos
Affiliation:
Instituto de Física de Cantabria (CSIC-UC), 39005 Santander, Spain

Abstract

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We review the use of the X-ray background (XRB) as a cosmological tool with emphasis on three techniques: multipole analysis, autocorrelation functions and excess fluctuations. Although these methods of analysis of XRB fluctuations, and in particular the excess fluctuations method, are quite sensitive to cosmological parameters, the poor knowledge of a possibly redshift dependent bias parameter for the sources that dominate the X-ray background prevents the derivation of firm conclusions at present. Conversely, knowledge of the cosmological parameters could be used together with XRB fluctuations to assess the clustering properties of AGN as the dominant XRB sources.

Type
Part X: New Observational Approaches
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 400 - 407
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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