Acoustic emission from magnetic flux tubes in the solar network
| Autor: | G. Vigeesh, S. S. Hasan |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Physics
History Flux tube Flux FOS: Physical sciences Mechanics Plasma Acoustic wave Magnetic flux Computer Science Applications Education Magnetic field Acoustic emission Astrophysics - Solar and Stellar Astrophysics Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Magnetohydrodynamics Solar and Stellar Astrophysics (astro-ph.SR) |
| DOI: | 10.48550/arxiv.1304.5193 |
| Popis: | We present the results of three-dimensional numerical simulations to investigate the excitation of waves in the magnetic network of the Sun due to footpoint motions of a magnetic flux tube. We consider motions that typically mimic granular buffeting and vortex flows and implement them as driving motions at the base of the flux tube. The driving motions generates various MHD modes within the flux tube and acoustic waves in the ambient medium. The response of the upper atmosphere to the underlying photospheric motion and the role of the flux tube in channeling the waves is investigated. We compute the acoustic energy flux in the various wave modes across different boundary layers defined by the plasma and magnetic field parameters and examine the observational implications for chromospheric and coronal heating. Comment: To appear in Journal of Physics: Conference Series, proceedings of "Eclipse on the Coral Sea: Cycle 24 Ascending", Palm Cove, 2012. 7 pages, 4 figures |
| Databáze: | OpenAIRE |
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