Thursday, November 21, 2013

Sagittarius A*

Sagittarius A*: The supermassive black hole at the center of the Milky Way.

New evidence has been uncovered for the presence of a jet of high-energy particles blasting out of the Milky Way's supermassive black hole known as Sagittarius A* (Sgr A*). This image of Sgr A* and the region around it contains some of the data used in the study, with X-rays from Chandra (purple) and radio emission from the Very Large Array (blue). Jets of high-energy particles are found throughout the Universe on large and small scales. The likely discovery of a jet from Sgr A* helps astronomers learn more about the giant black hole, including how it is spinning.

Scale: Image is 1.2 arcmin across. (about 9 light years).

Image credit: X-ray: NASA/CXC/UCLA/Z.Li et al; Radio: NRAO/VLA

Note: For more information, see Sagittarius A*: New Evidence For A Jet From Milky Way's Black Hole.

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