Black Hole Variability inBlack Hole Variability inSeyfert 1 Galaxiesbrightness changes.Link found between black hole mass andHigh Energy Astrophysical PhenomenaStudying Brightness Changes in Seyfert 1 GalaxiesResearch reveals links between black hole mass and brightness variations in Seyfert 1 AGNs.2025-09-19T12:33:06+00:00 ― 5 min read