Changes between Version 19 and Version 20 of u/erica/radtimescales


Ignore:
Timestamp:
03/30/16 15:48:57 (9 years ago)
Author:
Erica Kaminski
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • u/erica/radtimescales

    v19 v20  
    105105[[latex($t_{ff}\approx\frac{1}{2}\frac{1}{\sqrt{G\rho}}$)]]
    106106
    107 where rho is the mean density of the gas.
     107where rho is the mean density of the gas, calculated above. This gives,
    108108
    109 To check if the gas is Jeans unstable,
     109[[latex($\boxed{t_{ff}\approx 7.6e+12 ~s}$)]]
     110
     111
     112That this value is very nearly the sound crossing time shows that a pre-stellar core is marginally jeans unstable.