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The Compton-thick AGN population and the N H distribution of low-mass AGN in our cosmic backyard (2025)
Journal Article
Annuar, A., Alexander, D. M., Gandhi, P., Lansbury, G. B., Rosli, M. N., Stern, D., Asmus, D., Ballantyne, D. R., Baloković, M., Bauer, F. E., Boorman, P. G., Brandt, W. N., Brightman, M., Chen, C. T. J., Del Moro, A., Farrah, D., Harrison, F. A., Koss, M. J., Lanz, L., Marchesi, S., …Zappacosta, L. (2025). The Compton-thick AGN population and the N H distribution of low-mass AGN in our cosmic backyard. Monthly Notices of the Royal Astronomical Society, 540(4), 3827-3849. https://doi.org/10.1093/mnras/staf956

We present a census of the Compton-thick (CT) active galactic nucleus (AGN) population and the column density () distribution of AGN in our cosmic backyard using a mid-infrared selected AGN sample within 15 Mpc. The column densities are measured from... Read More about The Compton-thick AGN population and the N H distribution of low-mass AGN in our cosmic backyard.

The NuSTAR Local AGN N H Distribution Survey (NuLANDS). I. Toward a Truly Representative Column Density Distribution in the Local Universe (2024)
Journal Article
Boorman, P. G., Gandhi, P., Buchner, J., Stern, D., Ricci, C., Baloković, M., Asmus, D., Harrison, F. A., Svoboda, J., Greenwell, C., Koss, M. J., Alexander, D. M., Annuar, A., Bauer, F. E., Brandt, W. N., Brightman, M., Civano, F., Chen, C. T. J., Farrah, D., Forster, K., …Zappacosta, L. (2024). The NuSTAR Local AGN N H Distribution Survey (NuLANDS). I. Toward a Truly Representative Column Density Distribution in the Local Universe. Astrophysical Journal, 978(1), Article 118. https://doi.org/10.3847/1538-4357/ad8236

Hard X-ray-selected samples of active galactic nuclei (AGN) provide one of the cleanest views of supermassive black hole accretion but are biased against objects obscured by Compton-thick gas column densities of N <inf>H</inf> > 10<sup>24</sup> cm<su... Read More about The NuSTAR Local AGN N H Distribution Survey (NuLANDS). I. Toward a Truly Representative Column Density Distribution in the Local Universe.