Evolution of a density enhancement in a stratified atmosphere with uniform vertical magnetic field

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Abstract

The evolution of a density enhancement under the effect of gravity in a stratified atmosphere is considered. The atmosphere is threaded with an initially uniform vertical magnetic field. The magnetic field plays an important role in the evolution of the density enhancement and if strong enough results in the density enhancement rebounding a number of times. Both upward and downward velocities of the enhancement are obtained with speeds much less than the free fall speed. The enhancement can remain in the corona at least 11 times longer than a free-fall particle. The relevance of the simulations to the solar atmosphere is then discussed.

Original languageEnglish
Title of host publicationSOLMAG 2002 : proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference and IAU Colloquium 188, 11-15 June 2002, Santorini, Greece
EditorsH Sawaya-Lacoste
PublisherEuropean Space Agency
Pages485-488
ISBN (Print)92-9092-815-8
Publication statusPublished - Oct 2002

Publication series

NameESA Special Publications
Volume505
ISSN (Print)0379-6566

Keywords

  • MHD : solar filaments
  • FILAMENTS

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