Signatures of Coronal Heating Mechanisms

Details Signatures of Coronal Heating Mechanisms Signatures of Coronal Heating Mechanisms

2009-03-10

arxiv.org/abs/0903.1766v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

To appear in "Magnetic Coupling between the Interior and the Atmosphere of the Sun", eds. S.S. Hasan and R.J. Rutten, Astrophy

Scientific paper

Alfven waves created by sub-photospheric motions or by magnetic reconnection in the low solar atmosphere seem good candidates for coronal heating. However, the corona is also likely to be heated more directly by magnetic reconnection, with dissipation taking place in current sheets. Distinguishing observationally between these two heating mechanisms is an extremely difficult task. We perform 1.5-dimensional MHD simulations of a coronal loop subject to each type of heating and derive observational quantities that may allow these to be differentiated.

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