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The BMW Detection Algorithm applied to the Chandra Deep Field south: deeper and deeper

A. Moretti·D. Lazzati·S. Campana·G. Tagliaferri
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Abstract

Chandra deep fields represent the deepest look at the X-ray sky. We analyzed the Chandra Deep Field South (CDFS) with the aid of a dedicated wavelet-based algorithm. Here we present a detailed description of the procedures used to analyze this field, tested and verified by means of extensive simulations. We show that we can safely reconstruct the LogN-Log S source distribution of the CDFS down to limiting fluxes of 2.4x10^-17 and 2.1x10^-16 erg s^-1 cm^-2 in the soft (0.5-2 keV) and hard (2-10 keV) bands, respectively, fainter by a factor ~ 2 than current estimates. At these levels we can account for ~ 90% of the 1-2 keV and 2-10 keV X-ray background.

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A. Moretti, D. Lazzati, S. Campana, G. Tagliaferri. 2002-01-17. The BMW Detection Algorithm applied to the Chandra Deep Field south: deeper and deeper. https://doi.org/10.1086/339727

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