Inflow time
= Inflow time
{title2=$t_{\rm in}$}
The inflow time is the characteristic time for accreting matter to move radially by its current radius, $t_{\rm in}\sim R/|u_R|$.
= Inflow time
{title2=$t_{\rm in}$}
The inflow time is the characteristic time for accreting matter to move radially by its current radius, $t_{\rm in}\sim R/|u_R|$.