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Much ado about nothing? Local void & LCDM

  1. Jan 28, 2014 #1

    Chronos

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    This paper - The Local Void: for or against ΛCDM?,http://arxiv.org/abs/1401.6459 - puts to the test the question of low galaxy counts in the vicinity of the Milky Way. It has been suggested this poses a problem for LCDM. Using the Millennium II supercomputer at the Max Planck Supercomputer Center, a ten billion particle dark matter numerical analysis was performed and revealed such voids are not only possible, but, probable under reasonable LCDM assumptions.
     
  2. jcsd
  3. Jan 28, 2014 #2

    Drakkith

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    Interesting. I wonder how long it took them to calculate that, lol.
     
  4. Jan 28, 2014 #3

    Chronos

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    The millennium II run required 1.4 million cpu hours over 2048 cores. In other words, the supercomputer required about a month to crunch all the numbers.
     
  5. Jan 29, 2014 #4

    Chalnoth

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    Very cool. More or less what I expected. The ΛCDM model has proven to be remarkably resilient, and I really think it's a bad idea to bet against it.
     
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