[Users] GW150914 example, noisy Psi4 waveforms

[Ian Hinder]

On 31 Mar 2017, at 00:36, Christian D. Ott <cott at tapir.caltech.edu> wrote:

> Hi Ian,
> 
> Thanks for your reply. Good to know that others have the same problem.
> I've done a 4th order run (with appropriately reduced # of ghost zones
> etc.) with the Cartesian/Curvilinear boundary out at ~86. This indeed
> reduces the oscillations, but only slightly. I was hoping for a bigger
> effect. See attached plot comparing the 4th order run with
> sphere_inner_radius at 51.4 with the new run at 85.66.

Hmm. That's a bit disappointing.  In your original plot, I couldn't see any oscillations at all in the 8th order case, though I have seen them in my runs when plotting the frequency (which is yet another derivative).  Can you see oscillations in psi4 itself in the 8th order case?

-- 
Ian Hinder
http://members.aei.mpg.de/ianhin

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