Toward a dynamical shift condition for unequal mass black hole binary simulations
Résumé
Moving puncture simulations of black hole binaries rely on a specific gauge choice that leads to approximately stationary coordinates near each black hole. Part of the shift condition is a damping parameter, which has to be properly chosen for stable evolutions. However, a constant damping parameter does not account for the difference in mass in unequal mass binaries. We introduce a position dependent shift damping that addresses this problem. Although the coordinates change, the changes in the extracted gravitational waves are small.
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PEER_stage2_10.1088%2F0264-9381%2F27%2F11%2F114008.pdf (575.54 Ko)
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