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  GRHydro: A new open source general-relativistic magnetohydrodynamics code for the Einstein Toolkit

Moesta, P., Mundim, B. C., Faber, J. A., Haas, R., Noble, S. C., Bode, T., et al. (2014). GRHydro: A new open source general-relativistic magnetohydrodynamics code for the Einstein Toolkit. Classical and quantum gravity, 31(1): 015005. doi:10.1088/0264-9381/31/1/015005.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-F64F-0 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-F655-F
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 Urheber:
Moesta, Philipp, Autor
Mundim, Bruno C.1, Autor
Faber, Joshua A., Autor
Haas, Roland, Autor
Noble, Scott C., Autor
Bode, Tanja, Autor
Loeffler, Frank, Autor
Ott, Christian D., Autor
Reisswig, Christian, Autor
Schnetter, Erik, Autor
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: We present the new general-relativistic magnetohydrodynamics (GRMHD) capabilities of the Einstein Toolkit, an open-source community-driven numerical relativity and computational relativistic astrophysics code. The GRMHD extension of the Toolkit builds upon previous releases and implements the evolution of relativistic magnetised fluids in the ideal MHD limit in fully dynamical spacetimes using the same shock-capturing techniques previously applied to hydrodynamical evolution. In order to maintain the divergence-free character of the magnetic field, the code implements both hyperbolic divergence cleaning and constrained transport schemes. We present test results for a number of MHD tests in Minkowski and curved spacetimes. Minkowski tests include aligned and oblique planar shocks, cylindrical explosions, magnetic rotors, Alfv\'en waves and advected loops, as well as a set of tests designed to study the response of the divergence cleaning scheme to numerically generated monopoles. We study the code's performance in curved spacetimes with spherical accretion onto a black hole on a fixed background spacetime and in fully dynamical spacetimes by evolutions of a magnetised polytropic neutron star and of the collapse of a magnetised stellar core. Our results agree well with exact solutions where these are available and we demonstrate convergence. All code and input files used to generate the results are available on http://einsteintoolkit.org. This makes our work fully reproducible and provides new users with an introduction to applications of the code.

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 Datum: 2013-04-192014
 Publikationsstatus: Erschienen
 Seiten: 58 pages, 20 figures
 Ort, Verlag, Ausgabe: -
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 Identifikatoren: arXiv: 1304.5544
DOI: 10.1088/0264-9381/31/1/015005
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Titel: Classical and quantum gravity
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, U.K. : Institute of Physics
Seiten: - Band / Heft: 31 (1) Artikelnummer: 015005 Start- / Endseite: - Identifikator: ISSN: 0264-9381
CoNE: https://pure.mpg.de/cone/journals/resource/954925513480_1