Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Background radiation

  1. Feb 7, 2017 #1
    Can I confirm that the background radiation is from out of our galaxy?
     
  2. jcsd
  3. Feb 7, 2017 #2

    Chronos

    User Avatar
    Science Advisor
    Gold Member

    Well, the CMB appears to be hugely red shifted, that might be a clue.
     
  4. Feb 7, 2017 #3

    PeterDonis

    User Avatar
    2016 Award

    Staff: Mentor

  5. Feb 7, 2017 #4

    PeterDonis

    User Avatar
    2016 Award

    Staff: Mentor

    (Btw, I have changed the level of this thread to "B".)
     
  6. Feb 8, 2017 #5
    Yes but I am after a fact to prove it's from out of our galaxy, you know ? Can only see inferences
     
  7. Feb 8, 2017 #6

    Chalnoth

    User Avatar
    Science Advisor

    Last edited by a moderator: May 8, 2017
  8. Feb 8, 2017 #7
    Last edited by a moderator: May 8, 2017
  9. Feb 8, 2017 #8

    Chronos

    User Avatar
    Science Advisor
    Gold Member

    Gravitational lensing of the CMB; https://arxiv.org/abs/1502.01591, Planck 2015 results. XV. Gravitational lensing, should be sufficient to dispel any lingering doubts.
     
  10. Feb 8, 2017 #9
    Would it be accurate to say the CMB we detect today came from outside the galaxy, but CMB originally radiated from all points in the universe, including our own?
     
  11. Feb 8, 2017 #10

    Drakkith

    User Avatar

    Staff: Mentor

    Absolutely.
     
  12. Feb 9, 2017 #11

    Chronos

    User Avatar
    Science Advisor
    Gold Member

    The CMB emitted from nearby departed our neighborhood long ago, so it does not contaminate CMB emitted by distant sources - assuming that is where you were leading.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Background radiation
  1. Background radiation (Replies: 7)

Loading...