A New Population of Compton-thick Agn Identified Using the Spectral Curvature above 10 Kev

Abstract

We present a new metric that uses the spectral curvature (SC) above 10 keV to identify Compton-thick AGN in low-quality Swift/BAT X-ray data. Using NuSTAR, we observe nine high SC-selected AGN. We find that high-sensitivity spectra show the majority are Compton-thick (78% or 7/9) and the remaining two are nearly Compton-thick (NH ' 5 − 8 × 10 cm−2). We find… (More)

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