[Loops] "Impulsive heating of active region cores"
Durgesh Tripathi
durgesh at iucaa.ernet.in
Wed Jul 27 06:25:45 MDT 2011
Dear Loop-sters:
Please find a paper on "Emission Measure Distribution and Heating of Two Active Region Cores". I have appended the abstract below and the paper could be downloaded from the following link:
http://arxiv.org/abs/1107.4480
Abstract: Using data from the Extreme-ultraviolet Imaging Spectrometer aboard Hinode, we have studied the coronal plasma in the core of two active regions. Concentrating on the area between opposite polarity moss, we found emission measure distributions having an approximate power-law form EM$\propto T^{2.4}$ from $\log\,T = 5.5$ up to a peak at $\log\,T = 6.55$. We show that the observations compare very favorably with a simple model of nanoflare-heated loop strands. They also appear to be consistent with more sophisticated nanoflare models. However, in the absence of additional constraints, steady heating is also a viable explanation.
Hope some of you will find it useful.
Cheers,
-Durgesh
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