Journal
CLASSICAL AND QUANTUM GRAVITY
Volume 25, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/25/10/105006
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We describe a modification of a fourth-order accurate 'moving-puncture' evolution code, where by replacing spatial fourth-order accurate differencing operators in the bulk of the grid by a specific choice of sixth-order accurate stencils we gain significant improvements in accuracy. We illustrate the performance of the modified algorithm with an equal-mass simulation covering nine orbits.
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