[Users] PunctureTracker.

[Peter Diener]

Hi,

before the Chandrasekhar release I contacted all the authors of the cactus 
thorn PunctureTracker about potentially include it in the Einstein 
Toolkit. For those who don't know, this thorn (as it's name implies) 
tracks the location of the punctures which can then be used to move the 
mesh refinement regions around. It does so simply by shift-advecting the 
puncture location. The main advantages of using this instead of tracking 
the black hole location using the apparent horizon centroid is 1) that
it doesn't rely on being able to find the apparent horizon and 2) it 
converts the apparent horizon finder back to being a pure analysis 
function.

I'm sending this e-mail now to gauge whether the rest of the Einstein 
Toolkit community is interested in this capability. We can discuss this on 
the mailing list and/or telecons.

Cheers,

   Peter