Energy Transport to the Solar Corona by Magnetic Kink Waves

Choudhuri, Arnab Rai and Dikpati, Mausumi and Banerjee, Dipankar (1993) Energy Transport to the Solar Corona by Magnetic Kink Waves. In: The Astrophysical Journal, 413 (2). pp. 811-825.

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Abstract

We show that the magnetic kink waves generated by the motions of photospheric footpoints of the coronal flux tubes can supply adequate energy for heating the quiet corona, provided there are occasional rapid motions of these footpoints as found in recent observations. Choudhuri et al. (1992) modeled the solar corona as isothermal atmosphere and showed that these rapid motions are much more efficient for transporting energy compared to the slow footpoint motions taking place most of the time. We extend these calculations for a two-layer atmosphere, with the lower layer having chromospheric thickness and temperature, and the upper layer having coronal temperature. Even in the presence of such a temperature jump we find that the rapid footpoint motions are still much more efficient for transporting energy to the corona and the estimated energy flux is sufficient for quiet coronal heating. We discuss the general problem of the propagation of kink pulses in a two-layer atmosphere for different possible values of the basic parameters. We find a fairly complicated behavior which could not be anticipated from the analysis of a pure Fourier mode.

Item Type:	Journal Article
Publication:	The Astrophysical Journal
Publisher:	The American Astronomical Society
Additional Information:	Copyright of this article belongs to The American Astronomical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Jul 2006
Last Modified:	19 Sep 2010 04:30
URI:	http://eprints.iisc.ac.in/id/eprint/7886

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