Schwarzschild-deSitter Metric: Radial Locations of Event Horizons

[Jim]

Somewhere I ran across a `prescription' for computing the radial locations of the 2 event horizons of a S-dS metric, in which one merely computes where the radial gradient of g00 component vanishes, i.e., dg00/dr = 0.
I am wrong, & apparently it's sufficient to merely set g00 = 0 , in order to define the event horizon location(s).
Can someone tell me what (if any ) is the physical relevance to the former prescription ?
Most appreciated !
Jim

 

[haushofer]

'Somewhere' will not do. You have to give a reference if you want people to respond properly.

 

[sweet springs]

Hi. There is no point like that if r is finite, isn't it?