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

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.

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

References in corpus (9)

• A Wavelet-Based Algorithm for the Spatial Analysis of Poisson Data
• The Chandra Deep Field North Survey. V. 1 Ms Source Catalogs
• New Results from the X-ray and Optical Survey of the Chandra Deep Field South: The 300ks Exposure
• The Chandra Deep Survey of the Hubble Deep Field North Area. IV. An Ultradeep Image of the HDF-N
• The HELLAS2XMM survey: I. The X-ray data and the Log(N)-Log(S)
• A blind HI survey of the M81 group
• Faint Source Counts from Off-source Fluctuation Analysis on Chandra Observations of the Hubble Deep Field-North
• The deepest X-ray look at the Universe
• X-Ray Constraints on the Warm_hot Intergalactic Medium

Cited by in corpus (16)

• The resolved fraction of the Cosmic X-ray Background
• The XXL Survey. II. The bright cluster sample: catalogue and luminosity function
• The quiescent X-ray emission of three transient X-ray pulsars
• The (un)resolved X-ray background in the Lockman Hole
• How are AGN Found?
• Background radiation from sterile neutrino decay and reionization
• Resolving the Galactic X-ray background
• A Chandra observation of the old open cluster M67
• Properties of the diffuse X-ray background in a high-resolution hydrodynamical simulation
• "Revealing a Population of Heavily Obscured Active Galactic Nuclei at z=0.5-1 in the Chandra Deep Field-South
• Blank Field Sources in the ROSAT HRI Brera Multiscale Wavelet catalog
• The X-ray background and the deep X-ray surveys
• On the contribution of point sources to the Galactic ridge X-ray emission
• The Brera Multi-scale Wavelet Chandra Survey. I. Serendipitous source catalogue
• XMM-Newton View of the Hubble Deep Field-North and Groth-Westphal Strip Regions
• SHEEP: The Search for the High Energy Extragalactic Population