Nanoflare heating of coronal loops in an active region triggered by reconnecting current sheets

Details Nanoflare heating of coronal loops in an active region triggered by reconnecting current sheets Nanoflare heating of coronal loops in an active region triggered by reconnecting current sheets

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.conf....7g&link_type=abstract

10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io

Astronomy and Astrophysics

Astronomy

Scientific paper

The purpose of this work is to study the heating of coronal loops, produced by the acceleration of particles inside reconnecting current sheets (RCS) which represent nanoflares. We also study the hydrodynamic response of the loops atmosphere to such a heating event. The RCS are formed as discontinuities of the loop magnetic field caused by the photospheric shuffling motions. The coronal loops are represented by the closed magnetic lines of force calculated by the magnetic field extrapolation of the active region NOAA 9114 magnetogram. The photospheric motions at the loops footpoints are measured using local correlation tracking. The magnetic and electric fields accelerating particles at the RCS are computed using the loop magnetic fields and the photospheric motions. We further discuss the question of energy conservation inside the current sheet, and we present the statistical distributions of quantities relevant for particles acceleration and coronal heating for a number of the active region's coronal loops.

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