Improved Outer Boundary Conditions for Error Reduction in Computer Simulated Gravitational Wave Signals

Tim Kostersitz, and Dr. Luisa Buchman, Department of Physics, University of Washington, 18115 Campus Way NE, Bothell, WA 98011

After the first successful measurement of a gravitational wave in 2015 by LIGO (GW150914), the race to accurately simulate the gravitational waves caused by various cosmic events has become more relevant than ever. The computational models that have been developed are what allow LIGO and other detectors to interpret their observational waveforms. Now as the precision of the detectors themselves increases, so must the accuracy of the template waveform simulations. Error in the computed waveforms caused by spurious reflections off the outer boundary and into the finite computational domain is one of the issues that holds back further progress in this area. The focus of the work I will be presenting is on  “higher order boundary conditions”, which are predicted by theory to significantly reduce error in the computed waveforms due to the aforementioned spurious reflections. Research into the subject is conducted through the testing and debugging of code which implements the higher order boundary conditions.

Additional Abstract Information

Presenter: Tim Kostersitz

Institution: University of Washington Bothell

Type: Poster

Subject: Physics/Astronomy

Status: Approved

Time and Location

Session: Poster 9
Date/Time: Wed 12:00pm-1:00pm
Session Number: 6157