# Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. I. X-Ray Spectral and Long-term Variability Analyses

@article{Li2019PiercingTH,
title={Piercing through Highly Obscured and Compton-thick AGNs in the Chandra Deep Fields. I. X-Ray Spectral and Long-term Variability Analyses},
author={Junyao Li and Yongquan Xue and Mouyuan Sun and Teng Liu and Fabio Vito and William Nielsen Brandt and Thomas M. Hughes and Guang Yang and Paolo Tozzi and Shifu Zhu and Xue-Tang Zheng and Bin Luo and Chien-Ting J. Chen and Cristian Vignali and Roberto Gilli and Xinwen Shu},
journal={The Astrophysical Journal},
year={2019},
volume={877}
}
• Published 8 April 2019
• Physics
• The Astrophysical Journal
We present a detailed X-ray spectral analysis of 1152 active galactic nuclei (AGNs) selected in the Chandra Deep Fields (CDFs), in order to identify highly obscured AGNs ( > ). By fitting spectra with physical models, 436 (38%) sources with are confirmed to be highly obscured, including 102 Compton-thick (CT) candidates. We propose a new hardness ratio measure of the obscuration level that can be used to select highly obscured AGN candidates. The completeness and accuracy of applying this…

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