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A new X-ray mission to measure the power spectrum of fluctuations in the Universe

X. Barcons·A. C. Fabian
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Abstract

We propose a new, simple, dedicated X-ray mission to measure the power spectrum of density fluctuations in the Universe, by accurately mapping the X-ray background on the whole sky on scales of arounf one sq deg. Since the method relies on the detection of excess fluctuations produced by the clustering of X-ray sources at intermediate redshifts above the confusion noise produced by bright foreground sources, counting noise and systematic noise need to be kept to a minimum. We propose a proportional counter with collimated fields of view of various sizes as the optimal instrument for this mission.

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X. Barcons, A. C. Fabian. 1997-11-12. A new X-ray mission to measure the power spectrum of fluctuations in the Universe. https://doi.org/10.1002/asna.2123190163

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