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We present a new, ambitious survey performed with the Chandra X-rayObservatory of the 9.3 deg$^2$ Bo\"otes field of the NOAO Deep Wide-FieldSurvey. The wide field probes a statistically representative volume of theUniverse at high redshift. The Chandra Deep Wide-Field Survey exploits theexcellent sensitivity and angular resolution of Chandra over a wide area,combining 281 observations spanning 15 years, for a total exposure time of 3.4Ms, and detects 6891 X-ray point sources down to limiting fluxes of$4.7\times10^{-16}$, $1.5\times10^{-16}$, and $9\times10^{-16}$ erg cm$^{-2}$s$^{-1}$, in the $0.5-7$ keV, $0.5-2$ keV, and $2-7$ keV bands, respectively.The robustness and reliability of the detection strategy is validated throughextensive, state-of-the-art simulations of the whole field. Accurate numbercounts, in good agreement with previous X-ray surveys, are derived thanks tothe uniquely large number of point sources detected, which resolve $65.0 \pm12.8\%$ of the cosmic X-ray background between $0.5-2$ keV and $81.0 \pm11.5\%$ between $2-7$ keV. Exploiting the wealth of multi-wavelength dataavailable on the field, we assign redshifts to $\sim 94\%$ of the X-raysources, estimate their obscuration and derive absorption-correctedluminosities. We provide an electronic catalog containing all the relevantquantities needed for future investigations.

the astrophysical journal. supplement series/astrophysical journal. supplement series

The Chandra Deep Wide-Field Survey: A New Chandra Legacy Survey in the  Bo\"otes Field I. X-ray Point Source Catalog, Number Counts and  Multi-Wavelength Counterparts