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Analysis reveals a tiny black hole repeatedly punching through a larger black hole’s disk of gas. At the heart of a far-off galaxy, a supermassive black hole appears to have had a case of the hiccups. Astronomers from MIT, Italy, the Czech Republic, and elsewhere have found that a previously q ....
Using the All-Sky Automated Survey for Supernovae (ASAS-SN) system, on Feb. 22, 2023, the team detected a sudden surge in brightness followed by a rapid dimming in the galaxy NGC 3799, located about 160 million light-years from Earth. ....
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 Astronomy in the University of Oklahoma College of Arts and Sciences are lead authors on a paper describing a changing-look blazar - a powerful active galactic nucleus powered by supermassive blackhole at the center of a galaxy. The paper is published in ....