Recent content by sfbsoccer25

This is the exact wording from the assignment. I believe we are looking for the total mass out to 2R. Then the M/L ratio of the MW if all the luminosity is also in this 2R.

Have a homework question about power law density distributions that I could use a little help on... Given a power-law distribution, ρ(R) \propto R^{-\propto}, show that a flat rotation curve can be obtained if \propto = 2 and that solid body rotation is obtained if \propto = 0. Also, I'm...

Just a matter of terminology, are gravitational lensing and gravitational microlensing the same phenomenon? I have always been under the impression that they were. Any help? Thanks!