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

Gamma rays unlikely to originate from Dark Matter

  1. Feb 3, 2016 #1

    wolram

    User Avatar
    Gold Member

    If we can not use gamma rays to detect Dark Matter what can we use?

    http://www.sciencedaily.com/releases/2016/02/160203110928.htm

    Studies by two independent groups from the US and the Netherlands have found that gamma ray signals from the inner galaxy come from a new source rather than from the collision of dark matter particles. The new source is likely to be rapidly rotating pulsars, rather than the as-yet undetected invisible dark matter particles thought to make up 85 percent of the mass in the Universe.
     
  2. jcsd
  3. Feb 3, 2016 #2

    Orodruin

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    They are not saying you cannot detect dark matter through gamma rays. They are saying that a particular signal, for which DM was a possible explanation, does not originate from DM.

    Besides that, there are still many other possible DM signals.
     
  4. Feb 3, 2016 #3

    wolram

    User Avatar
    Gold Member

    That is the question Orodruin, what can or do we use for detecting DM
     
  5. Feb 3, 2016 #4

    Orodruin

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    Well, so far nothing we have tried has worked (apart from all the gravitational evidence). There are numerous ways of looking for it though. You can look for indirect evidence from DM annihilation products by searching for excesses of positrons, gamma rays, or neutrinos in different cosmic environments. You can look for direct dark matter collisions with matter. You can try to produce it in particle accelerators.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook