2018/04/01 by Norbert Magyar, N. Magyar, Tom Van Doorsselaere +1
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Astrobiology #Computational physics #Corona (planetary geology) #Coronal mass ejection #Coronal plane #Geomagnetism and Paleomagnetism Studies #Geophysics #Ionosphere and magnetosphere dynamics #Magnetic field #Magnetohydrodynamic drive #Magnetohydrodynamics #Physics #Solar and Space Plasma Dynamics #Solar wind #astro-ph.SR
paper · pdf · doi:10.3847/1538-4357/aab42c
published as The Astrophysical Journal, Volume 856, Number 2. (2018)
openalex publication_date 2018/04/01 · arxiv created 2018/04/16 · arxiv updated 2018/04/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract Coronal seismology is a diagnostic tool used in solar physics for measuring parameters that are otherwise hard to measure; of these parameters, magnetic field values are arguably the most important. The parameters are inferred by combining observations of waves with magnetohydrodynamic (MHD) wave theory. To date, coronal seismology has successfully been applied to various single-oscillation events. Such events are relatively rare, resulting in rare occasions to use diagnostics. Ubiquitous waves in the solar atmosphere might, however, allow for the possibility of dynamic coronal seismology, which involves the continuous inversions of coronal parameters and would constitute a huge leap forward in many areas of solar physics. In this paper, we investigate the robustness and accuracy of magnetic field diagnostics applied to forward-modeled 3D MHD simulations of propagating Alfvénic waves. We find that the seismologically measured magnetic field values are reassuringly close to the input value (within ≈20%) for a range of setups studied, providing encouragement and confidence for the further development of dynamic coronal seismology.