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

B What is the next step in cosmology

  1. Aug 31, 2016 #1

    wolram

    User Avatar
    Gold Member

    I think gravitational radiation mapping, but this will not happen until we have space based observations, until then we have to rely on LIGO which is in its infancy.
     
  2. jcsd
  3. Aug 31, 2016 #2

    Chalnoth

    User Avatar
    Science Advisor

    Some other possibilities:
    1. Detection of primordial B-mode polarization of the CMB.
    2. Use of BH-BH mergers as standard (or standardizable) candles. I saw a talk a little while ago where they showed that if we could find an optical signal of the event, and in particular measure its redshift, the BH-BH mergers would be vastly more accurate than supernovae as standard candles. I think we'd need three gravity wave observatories to all detect the same event to have a chance of narrowing the location in the sky sufficiently to point telescopes at it before the light fades, if there is any detectable light at all.
    3. Observations of the "dark ages" before the stars turned on through measuring the 21cm Hydrogen line (see here).
    4. More accurate and larger galaxy surveys to better nail down dark energy. These will be generally slow, incremental improvements, but still important for better understanding of cosmology.
     
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: What is the next step in cosmology
Loading...