期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 225, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/0067-0049/225/2/22
关键词
accretion, accretion disks; black hole physics; magnetohydrodynamics (MHD); relativistic processes
资金
- NSF [AST-1333091]
- Direct For Mathematical & Physical Scien [1333682] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [1333682] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1333612, 1333091] Funding Source: National Science Foundation
We present a new general relativistic magnetohydrodynamics (GRMHD) code integrated into the Athena++ framework. Improving upon the techniques used in most GRMHD codes, ours allows the use of advanced, less diffusive Riemann solvers, in particular HLLC and HLLD. We also employ a staggered-mesh constrained transport algorithm suited for curvilinear coordinate systems in order to maintain the divergence-free constraint of the magnetic field. Our code is designed to work with arbitrary stationary spacetimes in one, two, or three dimensions, and we demonstrate its reliability through a number of tests. We also report on its promising performance and scalability.
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