AGN photoionization of gas in companion galaxies as a probe of AGN radiation in time and directionDOI: info:10.1093/mnras/sty3332v. 4834847–4865
Keel, William C., Bennert, Vardha N., Pancoast, Anna, Harris, Chelsea E., Nierenberg, Anna, Chojnowski, S. Drew, Moiseev, Alexei V., Oparin, Dmitry V., Lintott, Chris J., Schawinski, Kevin, Mitchell, Graham, and Cornen, Claude. 2019. "AGN photoionization of gas in companion galaxies as a probe of AGN radiation in time and direction." Monthly Notices of the Royal Astronomical Society, 483 4847–4865. https://doi.org/10.1093/mnras/sty3332.