A piston-driven shock in the solar corona |
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Authors: | Alan Maxwell Murray Dryer Patrick McIntosh |
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Institution: | (1) Harvard-Smithsonian Center for Astrophysics, 02138 Cambridge, MA, U.S.A.;(2) NOAA Space Environment Laboratory, 80303 Boulder, CO, U.S.A. |
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Abstract: | A solar flare that occurred on the west limb at 1981, March 25, 20 38 UT generated a massive, rapidly-expanding optical coronal transient, which moved outward with an approximately constant velocity of 800 km s–1. An associated magnetohydrodynamic shock travelled out ahead of the transient with a velocity estimated to be approximately 1000 km s–1. The optical and radio data on the transient and shock fit well with general theories concerning piston-driven shocks and with current MHD models for propagation of such shocks through the solar corona. |
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