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Black Hole

Gamma rays and neutrinos from mellow supermassive black holes Black Hole

Gamma rays and neutrinos from mellow supermassive black holes

The Universe is filled with energetic particles, such as X rays, gamma rays, and neutrinos. However, most of the high-energy cosmic particles' origins remain unexplained. Now, an international research team has proposed a scenario that explains these; black holes with low activity act as major factories of high-energy cosmic particles.…
bubmag
September 24, 2021
Scientists watch a galaxy’s supermassive black hole shoot out the galaxy’s gas Black Hole

Scientists watch a galaxy’s supermassive black hole shoot out the galaxy’s gas

Home News Science & Astronomy A view of Centaurus A, which includes an active galactic nucleus at its heart. (Image credit: NASA/CXC/SAO; optical: Rolf Olsen; infrared: NASA/JPL-Caltech; radio: NRAO/AUI/NSF/Univ.Hertfordshire/M.Hardcastle) There comes a time in every galaxy's life, astronomers think, when the galaxy ejects a large part of its gas, but…
bubmag
September 20, 2021
ALMA Spots Quiescent Molecular Clouds and Tides around Milky Way’s Supermassive Black Hole Black Hole

ALMA Spots Quiescent Molecular Clouds and Tides around Milky Way’s Supermassive Black Hole

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found thousands of dense gas clumps but, surprisingly, no star formation, in a circumnuclear disk around Sagittarius A*, the 4-million-solar-mass black hole at the center of our Milky Way Galaxy. Clumps of molecular gas overlaid on Sagittarius A* circumnuclear disk as…
bubmag
September 16, 2021
“X-Ray Magnifying Glass” Provides Unprecedented Look at Black Hole in the Early Universe Black Hole

“X-Ray Magnifying Glass” Provides Unprecedented Look at Black Hole in the Early Universe

Astronomers have used gravitational lensing to obtain an unprecedented look at a black hole system in the early Universe. An artist’s illustration shows how the X-ray light from one of the objects on the left (purple) has been warped by the gravity of an intervening galaxy to produce two sources…
bubmag
September 15, 2021