Astronomers discover a 'changing-look' blazar
E-Mail IMAGE: Sloan Digital Sky Survey archival image from March 2004 (top) and the image from the authors' observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (bottom).... view more Credit: Sloan Digital Sky Survey archival image from March 2004 (top) and the image from the authors' observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (bottom).... A University of Oklahoma doctoral student, graduate and undergraduate research assistants, and an associate professor in the Homer L. Dodge Department of Physics and Astrono...