Physics
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003kfnt...19...13g&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 19, no. 1, p. 13-20
Physics
Scientific paper
We investigated the mode of upward plasma motions above sunspot umbra in the temperature minimum -- transition region chromosphere -- corona. The velocity, temperature, density and pressure in a magnetic flux tube were calculated under stationary isentropic flow on the basis of solution of equations of magnetic hydrodynamics. The equations have solutions in the presence of force and energy that admission to the plasma from an external electromagnetic field. Before the height 1600 km work of powers over the plasma determines an influence of field. The plasma accelerates from 0.1 km/s to 1--2 km/s over this distance. At greater heights the external field influence is reduced to delivering energy to the plasma moving with subsonic velocity. This results in increasing the plasma velocity and temperature. From a height of 1600 km, intensive increasing the admission of energy to the moving plasma is required to ensure the observed mode of its flow. The received results are discussed.
Gopasyuk O. S.
Gopasyuk S. I.
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