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

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

2002-01-17

arxiv.org/abs/astro-ph/0201290v1

Astronomy and Astrophysics

Astrophysics

27 pages 16 figures, accepted for publication in the Astrophysical Journal

Scientific paper

10.1086/339727

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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