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Age of Black Hole

  1. Dec 12, 2008 #1
    Is it possible to know BH age?
  2. jcsd
  3. Dec 12, 2008 #2


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    not by direct evidence, but one can tell something from circumstantial evidence.
    If it is the supermassive black hole at a galaxy's center then the age of the galaxy should help tell something. Also the mass and estimated rate of infall should help give bounds on the age.
    I doubt very much that there is any certain indicator.
  4. Dec 13, 2008 #3
    G'day from the land of ozzzzzzzz

    How big can a black hole grow?

    Indian-American detects black holes with 10 billion times sun's mass

    Is there a minimum and a maximum size to stars and black holes?

    Age of a black hole is determined by:

    Size, Mass, activity infalling matter, outfalling matter, gravitational influence on surroundings and the size of the jet formed.
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