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Title:
An Observational Test That Disproves Coronal Nanoflare Heating Models
Authors:
Aschwanden, Markus J.
Affiliation:
AA(Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Organization ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA 94304; )
Publication:
The Astrophysical Journal, Volume 672, Issue 2, pp. L135-L138. (ApJL Homepage)
Publication Date:
01/2008
Origin:
UCP
ApJ Keywords:
Sun: Corona, Sun: UV Radiation
DOI:
10.1086/527297
Bibliographic Code:
2008ApJ...672L.135A

Abstract

All theoretical models of nanoflare heating in the solar corona predict loops with an unresolved multistrand structure, which is in discrepancy with the quasi-isothermal cross sections of the finest coronal loop structures observed with TRACE, which have spatially resolved widths of w~1000-2000 km. We suggest modifying the theoretical models by relocating the hypothetical nanoflare events from their coronal location down to the chromosphere/transition region.
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Database: Astronomy
Physics
arXiv e-prints