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Sagittarius A* (Astronomy)

LC control no.sh2007002976
Geographic headingSagittarius A* (Astronomy)
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Variant(s)Sagittarius A-star
Sgr A* (Astronomy)
SgrA* (Astronomy)
See alsoBlack holes (Astronomy)
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Special noteThis heading is not valid for use as a geographic subdivision.
Found inWork cat.: Melia, F. The galactic supermassive black hole, c2007: pref. (the black hole, now known as Sagittarius A*) p. 4 (Sagittarius A* (or Sgr A* for short))
Chandra X-ray Observatory home page, Apr. 26, 2007: photo album (Sagittarius A*; supermassive black hole at our Galaxy's center, a.k.a. Sagittarius A* or Sgr A*)
World book @ NASA, via NASA home page, Apr. 26, 2007: black holes (There is strong evidence that a supermassive black hole lies at the center of the Milky Way. Astronomers believe this black hole is a radio-wave source known as Sagittarius A* (SgrA*). The clearest indication that SgrA* is a supermassive black hole is the rapid movement of stars around it)
Encyclopedia of astronomy and astrophysics, via WWW, Apr. 26, 2007: Sagittarius A (Embedded within Sgr A West, which is a cloud of hot gas, is an intense, very compact, variable radio source called Sagittarius A* (pronounced "A-star"); Sgr A* appears to have no orbital motion and to be completely stationary. It is therefore believed to mark the exact center of the Galaxy)
Wikipedia, Apr. 26, 2007 (Sagittarius A* (pronounced "A-star", standard abbreviation Sgr A*) is a bright and very compact source of radio emission at the center of the Milky Way Galaxy, part of a larger astronomical feature at that location (Sagittarius A); strong evidence in support of the hypothesis that Sagittarius A* is a supermassive black hole)