Simulated interaction of MHD shock waves with a complex network-like region

Abstract

We provide estimates of the wave energy reaching the solar chromosphere and corona in a network-like magnetic field topology, including a coronal null point. The waves are excited by an instantaneous strong subphotospheric source and propagate through the subphotosphere, photosphere, chromosphere, transition region, and corona with the plasma beta and other atmospheric parameters varying by several orders of magnitude. We compare two regimes of the wave propagation: a linear and nonlinear regime. While the amount of energy reaching the corona is similar in both regimes, this energy is transmitted at different frequencies. In both cases the dominant periods of waves at each height strongly depend on the local magnetic field topology, but this distribution is only in accordance with observations in the nonlinear case.

arXiv comment4 pages

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Cited by in corpus (9)

• Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
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• Oscillatory Reconnection of a 2D X-point in a hot coronal plasma
• High frequency waves in the corona due to null points
• The formation and dissipation of current sheets and shocks due to compressive waves in a stratified atmosphere containing a magnetic null
• Fast magnetic wave could heat the solar low-beta chromosphere
• Coronal heating problem solution by means of axion origin photons
• The independence of oscillatory reconnection periodicity from the initial pulse