The Role of Magnetic Helicity in Solar Eruptions

Details The Role of Magnetic Helicity in Solar Eruptions The Role of Magnetic Helicity in Solar Eruptions

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..848...64n&link_type=abstract

RECENT ADVANCES IN ASTRONOMY AND ASTROPHYSICS: 7th International Conference of the Hellenic Astronomical Society. AIP Conferenc

Astronomy and Astrophysics

Astrophysics

2

Coronal Mass Ejection, Electric And Magnetic Fields, Solar Magnetism, Mhd Waves, Plasma Waves, Turbulence

Scientific paper

Magnetic helicity is a quantity that descibes the chiral properties of magnetic structures. It has the unique feature that it is probably the only physical quantity which is approximately conserved even in resistive MHD. This makes magnetic helicity an ideal tool for the exploration of the physics of coronal mass ejections (CMEs). CMEs carry away from the Sun twisted magnetic fields and the concept of helicity can be used to monitor the whole history of a CME event from the emergence of twisted magnetic flux from the convective zone to the eruption and propagation of the CME into interplanetary space. I discuss the sources of the helicity shed by CMEs and the role of magnetic helicity in the initiation of CMEs.

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