A Coscaling Grid for Athena++. II. Magnetohydrodynamics
We extend the coscaling formalism of Habegger & Heitsch implemented in Athena++ to magnetohydrodynamics. The formalism relies on flow symmetries in astrophysical problems involving expansion, contraction, and center-of-mass motion. The formalism is fully consistent with the upwind constrained tr...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Supplement Series |
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| Online Access: | https://doi.org/10.3847/1538-4365/ada289 |
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| _version_ | 1832576208979623936 |
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| author | Fabian Heitsch Roark Habegger |
| author_facet | Fabian Heitsch Roark Habegger |
| author_sort | Fabian Heitsch |
| collection | DOAJ |
| description | We extend the coscaling formalism of Habegger & Heitsch implemented in Athena++ to magnetohydrodynamics. The formalism relies on flow symmetries in astrophysical problems involving expansion, contraction, and center-of-mass motion. The formalism is fully consistent with the upwind constrained transport method implemented in Athena++ and is accurate to second order in space. Applying our implementation to standard magnetohydrodynamic test cases leads to improved results and higher efficiency, compared to the fixed-grid solutions. |
| format | Article |
| id | doaj-art-7ca9ecc179614ac6b9ceeaa0ef75c197 |
| institution | Kabale University |
| issn | 0067-0049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj-art-7ca9ecc179614ac6b9ceeaa0ef75c1972025-01-31T09:19:42ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492025-01-0127626110.3847/1538-4365/ada289A Coscaling Grid for Athena++. II. MagnetohydrodynamicsFabian Heitsch0https://orcid.org/0000-0002-4775-039XRoark Habegger1https://orcid.org/0000-0003-4776-940XUniversity of North Carolina at Chapel Hill , Department of Physics and Astronomy, Chapel Hill, NC 27599, USA ; fheitsch@unc.eduUniversity of Wisconsin-Madison , Astronomy Department, Madison, WI 53703, USA ; rhabegger@wisc.eduWe extend the coscaling formalism of Habegger & Heitsch implemented in Athena++ to magnetohydrodynamics. The formalism relies on flow symmetries in astrophysical problems involving expansion, contraction, and center-of-mass motion. The formalism is fully consistent with the upwind constrained transport method implemented in Athena++ and is accurate to second order in space. Applying our implementation to standard magnetohydrodynamic test cases leads to improved results and higher efficiency, compared to the fixed-grid solutions.https://doi.org/10.3847/1538-4365/ada289Computational methodsMagnetohydrodynamical simulationsAstronomical simulations |
| spellingShingle | Fabian Heitsch Roark Habegger A Coscaling Grid for Athena++. II. Magnetohydrodynamics The Astrophysical Journal Supplement Series Computational methods Magnetohydrodynamical simulations Astronomical simulations |
| title | A Coscaling Grid for Athena++. II. Magnetohydrodynamics |
| title_full | A Coscaling Grid for Athena++. II. Magnetohydrodynamics |
| title_fullStr | A Coscaling Grid for Athena++. II. Magnetohydrodynamics |
| title_full_unstemmed | A Coscaling Grid for Athena++. II. Magnetohydrodynamics |
| title_short | A Coscaling Grid for Athena++. II. Magnetohydrodynamics |
| title_sort | coscaling grid for athena ii magnetohydrodynamics |
| topic | Computational methods Magnetohydrodynamical simulations Astronomical simulations |
| url | https://doi.org/10.3847/1538-4365/ada289 |
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