Results 1 to 3 of 3

Thread: Double Your Science: Starburst Galaxies Found with Active Quasars

  1. #1
    Join Date
    Jul 2003
    Posts
    29,125

    Double Your Science: Starburst Galaxies Found with Active Quasars

    Astronomers now know that essentially every galaxy has a supermassive black hole at its center. When the black hole is actively feeding on material, the surrounding region can blaze brightly - this is a quasar, aka an active galaxy. The Hubble Space Telescope has been used to image a set of exotic active galaxies, known [...]

    More...

  2. #2
    Join Date
    Aug 2006
    Posts
    321
    These are very interesting objects. Post-starburst galaxies are galaxies which have had a major burst of star formation shut off in the last Gyr or so and I think the quasar lifetime is only around 10 million years, so this begs the question: Why has the starburst been truncated, but the supermassive black hole is still feeding on gas presumably fed into it via the same merger which caused the starburst?

  3. #3
    Join Date
    May 2008
    Location
    Berlin
    Posts
    771
    Quote Originally Posted by Fraser View Post
    Astronomers now know that essentially every galaxy has a supermassive black hole at its center. When the black hole is actively feeding on material, the surrounding region can blaze brightly - this is a quasar, aka an active galaxy. The Hubble Space Telescope has been used to image a set of exotic active galaxies, known [...]

    More...
    We have to treat celestial objects relativistic. So gravity acting on a body should be calculated according to general relativity and the body should be treated as in free fall. That is the supposed state of motion of a star.
    The surprise arises, if one did. Black hole, jets and quasars are gone and the area looks quite calm and unspecific.

Similar Threads

  1. Does Starburst Activity Starve Galaxies of Gas?
    By Fraser in forum Universe Today
    Replies: 0
    Last Post: 2012-Jan-16, 04:50 PM
  2. Starburst Intensity Limit of Galaxies at z~5−6
    By Spaceman Spiff in forum Astronomy
    Replies: 3
    Last Post: 2007-Sep-07, 06:30 PM
  3. Starburst galaxies - nearest ones?
    By Nereid in forum Space/Astronomy Questions and Answers
    Replies: 4
    Last Post: 2006-Aug-29, 11:14 AM
  4. Spitzer Finds Starburst Galaxies
    By Fraser in forum Universe Today
    Replies: 0
    Last Post: 2005-Sep-13, 07:32 AM
  5. Discussion: Spitzer Finds Starburst Galaxies
    By Fraser in forum Universe Today
    Replies: 3
    Last Post: 2004-Jul-20, 07:34 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •