Geometrical and Physical Properties of SXR Loop-Top Flare Kernels

Details Geometrical and Physical Properties of SXR Loop-Top Flare Kernels Geometrical and Physical Properties of SXR Loop-Top Flare Kernels

2007-07-04

arxiv.org/abs/0707.0616v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

We investigate how the geometrical and physical properties of soft X-ray flare kernels change with their altitude above the photosphere. We analyze limb flares well observed by {\em Yohkoh}/SXT showing clear geometry with well separated loop-top kernels. Our analysis concerns relations between kernel size, plasma pressure, energy release and the kernel altitude. We define scaling laws describing how the sizes and its physical properties of kernels vary with the altitude above the photosphere. We interpret the observed relations in terms of the general magnetic structure of active regions.

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