Changes between Version 1 and Version 2 of u/u/erica/BEAnalysis
 Timestamp:
 05/28/13 13:42:42 (11 years ago)
Legend:
 Unmodified
 Added
 Removed
 Modified

u/u/erica/BEAnalysis
v1 v2 1 1 = Jeans Analysis = 2 3 A uniform cloud of gas will collapse under gravity if its gravitational timescale is shorter than its thermal timescale. That is, if the freefall time of the gas, [[latex($t_{ff} ~ 1/(G\rho)^{1/2}$)]] is less than the time it would take for sound waves to attempt to equilibrate the matter distribution, or the soundcrossing time, [[latex($t_{sc}=R/C_s$)]], where R is the radius of the cloud and Cs is its sound speed. 2 4 3 5 = The problem =