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

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.

Improved version, 4 pages, uses xsurv_article macro (included). Proceedings of the X-ray Surveys Workshop. To appear in Astron Nachr. Also at http://www.ifca.unican.es/~barcons/preprints.html

References in corpus (2)

• High Redshift Galaxies in the Hubble Deep Field. Color Selection and Star Formation History to z=4
• The evolution of galaxy clustering

Cited by in corpus (1)

• The spectrum of the cosmic X-ray background observed by RTXE/PCA