Small-scale waves and motions in photosphere and chromosphere of the sun

Computer Science – Sound

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Chromosphere, Gravity Waves, Photosphere, Solar Atmosphere, Solar Granulation, Sound Waves, Atmospheric Heating, Solar Corona, Solar Magnetic Field, Temperature Profiles

Scientific paper

Attention is given to motions and waves in the solar atmosphere, specifically, to nonactive phenomena in the solar atmosphere. The gross structure - the average temperature profile in the photosphere, chromosphere, transition region, and corona - is outlined and the energetic needs to maintain this structure are addressed. The various small-scale phenomena and processes in the photosphere and chromosphere are described. The solar granulation results from the overshoot of subphotospheric convection. At a height of about 150 km it comes to a rest. Secondary motions such as gravity waves and acoustic waves as well as waves involving the magnetic field are excited by the granulation and may carry energy upward. The chromosphere shows several distinct features and dynamical processes.

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