What is the source of the magnetic helicity shed by CMEs? The long-term helicity budget of AR 7978

Démoulin, P.; H. Mandrini, C.; van Driel‐Gesztelyi, L.; J. Thompson, B.; P. Plunkett, S.; Kővári, Zs.; Aulanier, G.; Young, Alexander

doi:10.1051/0004-6361:20011634

Public

What is the source of the magnetic helicity shed by CMEs? The long-term helicity budget of AR 7978

Published in Astronomy and Astrophysics • Feb 1, 2002

Authors:

P. Démoulin

C. H. Mandrini

L. van Driel‐Gesztelyi

Abstract

An isolated active region (AR) was observed on the Sun during seven rotations, starting from its birth in July 1996 to its full dispersion in December 1996. We analyse the long-term budget of the AR relative magnetic helicity. Firstly, we calculate the helicity injected by differential rotation at t...

Subject

Helicity

Physics

Magnetic helicity

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