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Swift J1745-26 : ウィキペディア英語版 | Swift J1745-26
Swift J1745-26 is a stellar-mass black hole located a few degrees from the center of the Milky Way galaxy toward the constellation Sagittarius.〔(【引用サイトリンク】publisher=NASA )〕 It was discovered by NASA's Swift satellite on September 16, 2012 due to the detection of an X-ray nova.〔 The pattern of X-rays from the nova indicated that the central object was a black hole. Its name arises from the coordinates of its sky position. While astronomers do not know its precise distance, they think the object resides about 20,000 to 30,000 light-years away in the galaxy's inner region.〔 Ground-based observatories have detected infrared and radio emissions from Swift J1745-26, but thick clouds of obscuring dust have prevented astronomers from catching Swift J1745-26 in visible light.〔 Swift J1745-26 must be a member of a low-mass X-ray binary (LMXB) system, which includes a normal, sun-like star.〔 == References ==
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