Generation of large scale electric fields in coronal flare circuits

Details Generation of large scale electric fields in coronal flare circuits Generation of large scale electric fields in coronal flare circuits

2009-08-06

arxiv.org/abs/0908.0813v1

Cent. Eur. Astropys. Bull. 33 (2009), 1, 141-154

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Scientific paper

A large number of energetic electrons are generated during solar flares. They carry a substantial part of the flare released energy but how these electrons are created is not fully understood yet. This paper suggests that plasma motion in an active region in the photosphere is the source of large electric currents. These currents can be described by macroscopic circuits. Under special circumstances currents can establish in the corona along magnetic field lines. The energy released by these currents when moderate assumptions for the local conditions are made, is found be comparable to the flare energy.

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