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Numerical Simulations of Solar Disturbances and their Interplanetary Consequences

Published online by Cambridge University Press:  19 July 2016

M. Dryer ,
S. T. Wu  and
T. R. Detman
M. Dryer
Affiliation:
1Space Environment Laboratory National Oceanic and Atmospheric Administration R/E/SE, 325 Broadway Boulder, Colorado 80303-3328 USA
S. T. Wu
Affiliation:
2Center for Space Plasma and Aeronomic Research, and Department of Mechanical Engineering University of Alabama in Huntsville Huntsville, Alabama 35899 USA
T. R. Detman
Affiliation:
1Space Environment Laboratory National Oceanic and Atmospheric Administration R/E/SE, 325 Broadway Boulder, Colorado 80303-3328 USA

Abstract

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Responses of the solar atmosphere and interplanetary medium to simulated solar disturbances were studied by time-dependent, MHD numerical simulations. This deterministic initial-boundary value problem was attacked in the classical way: a representative steady state is first established, then input parameters at the lower near-Sun boundary are perturbed. We discuss a number of 2- and 3-dimensional examples of coronal mass ejection (CME) simulations and some current controversies concerning the basic process of CME initiation. Footpoint shearing motion is tested to see whether it can provide a reasonable mechanism for CME development from arch filament configurations.

We also demonstrate possible interplanetary consequences to CME-like disturbances by using 3-D simulations to determine the dynamic response of the solar wind to a plasmoid injection from an eruptive filament or prominence. We also discuss the separate possibility whereby a plasmoid may be generated in the interplanetary medium by a solar-generated shock that propagates through a heliospheric current sheet. Application of the 3-D model for the interpretation of interplanetary scintillation observations is also discussed.

Type
VII. Magnetic Reconnection and Coronal Evolution
Information
Symposium - International Astronomical Union , Volume 142: Basic Plasma Processes on the Sun , 1990 , pp. 331 - 340
Copyright
Copyright © Kluwer 1990 

References

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