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Sagittarius A* (Astronomy)


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  • Variants

    • Sagittarius A-star
    • Sgr A* (Astronomy)
    • SgrA* (Astronomy)
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  • Sources

    • found: Work 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))
    • found: 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*)
    • found: 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)
    • found: 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)
    • found: 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)
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    • [This heading is not valid for use as a geographic subdivision.]
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  • Change Notes

    • 2007-05-01: new
    • 2007-08-15: revised
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