Does the Nearest Quasar Host a Black Hole Binary?

• by Budgieye moderator

  "The Doppler effect shifts each set of lines according to the black holes’ motions: one set of spectral lines will shift redward as that black hole swings away from Earth in its orbit, while the other set shifts blueward as that black hole’s orbit brings it toward Earth ...", a pair of feeding supermassive black holes will emit plenty of visible light, but very little ultraviolet"

  . - See more at: http://www.skyandtelescope.com/astronomy-news/on-the-hunt-for-black-hole-binaries-0916201565/?et_mid=784734&rid=246712406#sthash.HmMhfsgB.dpuf

  • See more at: http://www.skyandtelescope.com/astronomy-news/on-the-hunt-for-black-hole-binaries-0916201565/?et_mid=784734&rid=246712406#sthash.HmMhfsgB.dpuf"

  A visible-light image of Markarian 231 (Mrk 231), which might host a pair of supermassive black holes. NASA / ESA -

  See more at: http://www.skyandtelescope.com/astronomy-news/on-the-hunt-for-black-hole-binaries-0916201565/?et_mid=784734&rid=246712406#sthash.HmMhfsgB.dpuf

  http://www.skyandtelescope.com/astronomy-news/on-the-hunt-for-black-hole-binaries-0916201565/?et_mid=784734&rid=246712406

  A visible-light image of Markarian 231 (Mrk 231), which might host a pair of supermassive black holes.
  NASA / ESA - See more at: http://www.skyandtelescope.com/astronomy-news/on-the-hunt-for-black-hole-binaries-0916201565/?et_mid=784734&rid=246712406#sthash.HmMhfsgB.dpuf

  SDSS image

  http://skyserver.sdss.org/dr8/en/tools/explore/obj.asp?id=1237661417133965334

  Forum by cc_d : Re: Active galaxies with ionized gas clouds - more denizens of the Zoo
  « Reply #1662 on: July 29, 2011, 03:11:43 pm »
  Mrk 231 -- Seyfert 1 Galaxy
  1237661417133965334 SDSS J125614.24+565225.6http://www.galaxyzooforum.org/index.php?topic=275014.msg555312#msg555312

  870 refererences in NED

  Posted September 24, 2015 8:41 AM