The Emergence of Current-Carrying Magnetic Loops into the Solar Corona

Details The Emergence of Current-Carrying Magnetic Loops into the Solar Corona The Emergence of Current-Carrying Magnetic Loops into the Solar Corona

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...490l.107m&link_type=abstract

Astrophysical Journal Letters v.490, p.L107

Astronomy and Astrophysics

Astronomy

5

Magnetic Fields, Magnetohydrodynamics: Mhd, Plasmas, Sun: Corona, Sun: Magnetic Fields

Scientific paper

The mechanism of the dynamic emergence of current-carrying magnetic loops into the corona is examined by three-dimensional MHD simulations. By simultaneously modeling the spacetime profiles of the normal components of the emerging magnetic field and current density on the photosphere, we demonstrate that this process can qualitatively reproduce observations that show the emergence of a helically twisted magnetic structure with a suitable field-current combination. The flux-tube structure rises into the initially nearly field-free corona and gradually relaxes into a nearly force-free, steady state, magnetic loop.

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