Register to reply

Virial theorem

by shounakbhatta
Tags: theorem, virial
Share this thread:
Dec26-12, 05:16 AM
P: 280

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......


-- Shounak
Phys.Org News Partner Astronomy news on
Smallest known galaxy with a supermassive black hole found
Mystery of rare five-hour space explosion explained
Glowing galaxies in telescopic timelapse
Dec26-12, 03:08 PM
Sci Advisor
PF Gold
cepheid's Avatar
P: 5,196
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:

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.

Register to reply

Related Discussions
Virial Theorem Atomic, Solid State, Comp. Physics 8
Virial Theorem and Equipartition Theorem Classical Physics 4
Virial Theorem Quantum Physics 1
Virial Theorem Astronomy & Astrophysics 2
Virial Theorem Astronomy & Astrophysics 5