Inference of heating properties from "hot" non-flaring plasmas in active region cores. I. Single nanoflares
Date
20/09/2016Metadata
Show full item recordAbstract
The properties that are expected of “hot” non-flaring plasmas due to nanoflare heating in active regions are investigated using hydrodynamic modeling tools, including a two-fluid development of the Enthalpy Based Thermal Evolution of Loops code. Here we study a single nanoflare and show that while simple models predict an emission measure distribution extending well above 10 MK, which is consistent with cooling by thermal conduction, many other effects are likely to limit the existence and detectability of such plasmas. These include: differential heating between electrons and ions, ionization non-equilibrium, and for short nanoflares, the time taken for the coronal density to increase. The most useful temperature range to look for this plasma, often called the “smoking gun” of nanoflare heating, lies between 10 6.6 and 10 7 K. Signatures of the actual heating may be detectable in some instances.
Citation
Barnes , W T , Cargill , P J & Bradshaw , S J 2016 , ' Inference of heating properties from "hot" non-flaring plasmas in active region cores. I. Single nanoflares ' , Astrophysical Journal , vol. 829 , no. 1 , 31 . https://doi.org/10.3847/0004-637X/829/1/31
Publication
Astrophysical Journal
Status
Peer reviewed
ISSN
0004-637XType
Journal article
Rights
© 2016. The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.3847/0004-637X/829/1/31
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