Changes between Version 27 and Version 28 of u/erica/radtimescales
- Timestamp:
- 04/04/16 15:19:21 (9 years ago)
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u/erica/radtimescales
v27 v28 188 188 189 189 || [[latex($\lambda$)]] || .3 || 190 || l = h = r (box radius)|| .006 8 (pc) = 2.1e+16 (cm)||191 || [[latex($\rho$)]] || 2. 69*10^-17^ (g cm^-3^) ||192 || [[latex($\kappa_R$)]] || 2.3 (cm^2^ g^-1^) ||190 || l = h = r (box radius)|| .0069 (pc) = 2.14e+16 (cm)|| 191 || [[latex($\rho$)]] || 2.03*10^-16^ (g cm^-3^) || 192 || [[latex($\kappa_R$)]] || .23 (cm^2^ g^-1^) || 193 193 194 194 … … 201 201 The first factor is the light-crossing time: 202 202 203 [[latex($t_{light} = \frac{r}{c} = 8~days $)]]203 [[latex($t_{light} = \frac{r}{c} \approx 8.2 ~days $)]] 204 204 205 205 The second factor is the ratio of the box radius to the mean free path. We set this to = 1 in our derivation above: … … 220 220 221 221 222 222 223 = Coupling time estimate = 223 224