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N=3 polytropic index questions

  1. Dec 7, 2011 #1
    1. The problem statement, all variables and given/known data
    From a previous problem, we have found that the pressure inside the sun can be represented by a polytrope with index n=3.
    Does this mean that the sun contains relativistic degenerate matter, which is also described by a polytrope with index 3?
    Explain how a polytrope with index 3 can represent both cases


    2. Relevant equations
    None

    3. The attempt at a solution
    I answered the first bit, as I know that the sun does not contain relativistic degenerate matter, as it can be modelled as an ideal gas.
    But I have no idea how to answer the second part, as I have no idea why they can be modelled by the same polytrope.
    I am also unable to find anything on the internet, but maybe i'm looking in the wrong places.

    If anyone could point me in the right direction it would be incredibly helpful

    Thanks
     
  2. jcsd
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