CO-0.40-0.22

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CO-0.40-0.22 is a cloud of gas located about 200 light years from the galactic center of the Milky Way . It is a molecular cloud of 4,000 solar masses in the shape of an ellipse. Since parts of the gas cloud move unusually strong from each other, astronomers suspect a black hole behind the cloud . According to measurements, this would have a size of 100,000 solar masses and a diameter of 0.3 light years. It would be the second largest black hole discovered in the Milky Way so far.

The celestial object CO-0.40-0.22 was discovered by Japanese astronomers at the National Institute of Natural Sciences at Keiō University . The discovery was made using the radio telescopes Nobeyama Radio Observatory in Japan and Atacama Submillimeter Telescope Experiment in Chile. The celestial object was named because of its position in the galactic coordinate system , it is located at −0.40 ° galactic longitude and −0.22 ° galactic latitude.

literature

  • Tomoharu Oka, Reiko Mizuno, Kodai Miura, Shunya Takekawa: Signature of an Intermediate-mass Black Hole in the Central Molecular Zone of Our Galaxy . In: The Astrophysical Journal Letters . tape 816 , no. 1 , 2016, p. L7 , doi : 10.3847 / 2041-8205 / 816/1 / L7 .
  • Tomoharu Oka, Shiho Tsujimoto, Yuhei Iwata, Mariko Nomura, Shunya Takekawa: Millimetre-wave emission from an intermediate-mass black hole candidate in the Milky Way . In: Nature Astronomy . September 4, 2017, ISSN  2397-3366 , doi : 10.1038 / s41550-017-0224-z .

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