Virial theorem


by shounakbhatta
Tags: theorem, virial
shounakbhatta
shounakbhatta is offline
#1
Dec26-12, 05:16 AM
P: 268
Hello,

I am reading Virial theorem from Wikipedia.

It states in astrophysics, virial relations are:

3/5 GM/R=3/2.....

I want to know how this 3/5 and 3/2 value comes from?

If somebody can explain the step by step deduction of the Virial theorem in Astrophysics......

Thanks,

-- Shounak
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cepheid
cepheid is offline
#2
Dec26-12, 03:08 PM
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P: 5,198
Why not look it up yourself? The book Galaxy Formation by Malcom S. Longair has a derivation in section 3.5.1 (page 63). Actually, you can even read this section as part of the Google Books preview:

http://books.google.ca/books?id=e-wJ...page&q&f=false

I also seem to recall that Caroll & Ostlie (the huge orange textbook that many undergrads majoring in astro use) has a section on this as well.


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