Finding the mechanism of wave energy flux damping in solar pores using numerical simulations
| العنوان: | Finding the mechanism of wave energy flux damping in solar pores using numerical simulations |
|---|---|
| المؤلفون: | S. D. T. Grant, Caitlin A. Gilchrist-Millar, Julia M. Riedl, T. Van Doorsselaere, David B. Jess |
| المصدر: | Riedl, J M, Gilchrist-Millar, C A, Van Doorsselaere, T, Jess, D B & Grant, S D T 2021, ' Finding the mechanism of wave energy flux damping in solar pores using numerical simulations ', Astronomy & Astrophysics, vol. 648, A77 . https://doi.org/10.1051/0004-6361/202040163 |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010504 meteorology & atmospheric sciences, photosphere [Sun], Field line, FOS: Physical sciences, Energy flux, Context (language use), Astrophysics, Astronomy & Astrophysics, Computer Science::Digital Libraries, magnetohydrodynamics (MHD), 7. Clean energy, 01 natural sciences, 0103 physical sciences, waves, Magnetohydrodynamic drive, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, Physics, sunspots, Sunspot, Science & Technology, Plane (geometry), oscillations [Sun], Computer Science::Information Retrieval, Astrophysics::Instrumentation and Methods for Astrophysics, numerical [methods], Astronomy and Astrophysics, Mechanics, Physics::History of Physics, Physics - Plasma Physics, Magnetic field, Plasma Physics (physics.plasm-ph), Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Physical Sciences, Magnetohydrodynamics |
| الوصف: | Context. Solar magnetic pores are, due to their concentrated magnetic fields, suitable guides for magnetoacoustic waves. Recent observations have shown that propagating energy flux in pores is subject to strong damping with height; however, the reason is still unclear. Aims. We investigate possible damping mechanisms numerically to explain the observations. Methods. We performed 2D numerical magnetohydrodynamic (MHD) simulations, starting from an equilibrium model of a single pore inspired by the observed properties. Energy was inserted into the bottom of the domain via different vertical drivers with a period of 30s. Simulations were performed with both ideal MHD and non-ideal effects. Results. While the analysis of the energy flux for ideal and non-ideal MHD simulations with a plane driver cannot reproduce the observed damping, the numerically predicted damping for a localized driver closely corresponds with the observations. The strong damping in simulations with localized driver was caused by two geometric effects, geometric spreading due to diverging field lines and lateral wave leakage. 12 pages (including appendix), 13 figures, accepted for publication by A&A |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68adb1e69522dc75d52404ffa8990d65 https://pure.qub.ac.uk/en/publications/finding-the-mechanism-of-wave-energy-flux-damping-in-solar-pores-using-numerical-simulations(8fa0709f-66ff-4658-9906-9b18ccd49c05).html |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....68adb1e69522dc75d52404ffa8990d65 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |