On active region loops: Hinode/EIS observations

Details On active region loops: Hinode/EIS observations On active region loops: Hinode/EIS observations

2008-12-31

arxiv.org/abs/0901.0095v1

Astrophys.J.694:1256-1265,2009

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

27 pages, 7 figures, Accepted in ApJ

Scientific paper

10.1088/0004-637X/694/2/1256

Coronal loops are fundamental building blocks of the solar active regions and the corona. Therefore, a clear understanding of the physics of coronal loops will help us understand the physics of active region heating in particular and coronal heating in general. This requires a precise measurement of physical quantities such as electron densities and filling factors, temperatures, and flows in coronal loops. In this paper we have carried out an investigation of a spatially well resolved coronal loop using the EIS onboard Hinode to measure the above mentioned physical quantities. Based on this study we find that a nano-flare model could explain most of the observed characteristics of this loop.

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