U and V in the Kruskal Diagram

1. Oct 18, 2012

Airsteve0

I would just like to verify whether or not the variables u and v in the Kruskal diagram are functions of t. Thanks!

2. Oct 18, 2012

Bill_K

The transformation from Schwarzschild coordinates r, t to Kruskal coordinates u and v is:

u = -4M e-u/4M
v = 4M ev/4M

where u = t - r*, v = t + r*, and r* = r + 2M ln|(r/2M) -1|

3. Oct 18, 2012

Airsteve0

ok, that clears things up, thanks!