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Accretion discs - Orbital angular momentum

  1. Jun 28, 2010 #1
    1. The problem statement, all variables and given/known data
    There is a binary system accreting via Rcohe lobe overflow, where mass is transfered fromthe donor to the accretor and then lost in an isotropic wind.

    State an expression for the orbital angular momentum of the accretor, J1 and then use keplers third law to find an expression for the orbital angular speed

    3. The attempt at a solution

    am really stuck on this one. I know that the total angular mometum of the system can be written J = M1M2(Ga/M)1/2 but i dont know how to split this into a term for the accretor. At the moment i have come up with J1 = M1a1^2w

    keplers third law can be written a3w2=GM

    any help or pointers will be greatly appreciated!
  2. jcsd
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