Journal
CLASSICAL AND QUANTUM GRAVITY
Volume 37, Issue 15, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6382/ab939b
Keywords
general relativity; cosmology; frame-dragging; gravitomagnetism; numerical relativity
Categories
Funding
- STFC [ST/P000592/1, ST/I00162X/1, ST/P000541/1, ST/R000832/1]
- UK STFC [ST/S000550/1]
- Herchel Smith Postdoctoral Fellowship Fund
- ICG
- SEPNet
- University of Portsmouth
- Chilean National Commission for Scientific and Technological Research through Grant CONICYT/Becas-Chile [72180214]
- European Research Council [ERC-StG-716532-PUNCA]
- BEIS via STFC capital Grants [ST/K00042X/1, ST/P002293/1, ST/R002371/1, ST/S002502/1]
- Durham University
- Perimeter Institute for Theoretical Physics
- Government of Canada through the Department of Innovation, Science and Economic Development Canada
- Province of Ontario through the Ministry of Research, Innovation and Science
- STFC [ST/T001550/1, ST/L000636/1, ST/T001348/1, ST/T001569/1, ST/R001014/1, ST/P003400/1, ST/V002384/1, ST/V002376/1, ST/M006948/1, ST/M007073/1, ST/S003916/1, ST/S000550/1, ST/R001006/1, ST/S003762/1, ST/M007006/1, ST/M007065/1, ST/T001372/1, ST/R00689X/1, ST/K00333X/1, ST/R000832/1, ST/V002635/1, ST/T00049X/1, ST/M007618/1, ST/R001049/1, ST/J005673/1, ST/P000673/1, ST/P002447/1, ST/M006530/1] Funding Source: UKRI
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A number of codes for general-relativistic simulations of cosmological structure formation have been developed in recent years. Here we demonstrate that a sample of these codes produce consistent results beyond the Newtonian regime. We simulate solutions to Einstein's equations dominated by gravitomagnetism-a vector-type gravitational field that does not exist in Newtonian gravity and produces frame-dragging, the leading-order post-Newtonian effect. We calculate the coordinate-invariant effect on intersecting null geodesics by performing ray tracing in each independent code. With this observable quantity, we assess and compare each code's ability to compute relativistic effects.
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