Physics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...77..121s&link_type=abstract
Solar Physics, vol. 77, Apr. 1982, p. 121-151.
Physics
40
Atmospheric Models, Magnetohydrodynamic Flow, Plasma Jets, Pressure Gradients, Shock Tubes, Solar Atmosphere, Density Distribution, Jet Flow, Shock Wave Propagation, Spatial Distribution, Surges, Wave Generation
Scientific paper
Complete models of surges are presented and the general properties of the jet models in the solar atmosphere are investigated and classified in order to clarify the differences between spicule and surge models proposed elsewhere. One-dimensional hydrodynamic simulations of surges are done in which surges are regarded as jets resulting from a sudden pressure increase at the base of the model atmosphere. The height of the explosion h0 and the strength of the sudden pressure increase P/P0 are free parameters. It is found that for a fixed P/P0 there exists a critical height hc in h0 which separates the models into two types: h0 greater or less than hc. For the former, jets are produced directly by the pressure gradient force near h0, and made of the matter ejected from the explosion itself. For the other, jets are produced by the shock wave which is generated by the pressure enhancement. A range of values for hc is shown.
Kitai Reizaburo
Nishikawa Tetsuo
Shibata Kazunari
Suematsu Yoshinori
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