Temperature and Emission-Measure Profiles Along Long-Lived Solar Coronal Loops Observed with TRACE
Astrophysics
2009-10-31 v1
Abstract
We report an initial study of temperature and emission measure distributions along four steady loops observed with the Transition Region and Coronal Explorer (TRACE) at the limb of the Sun. The temperature diagnostic is the filter ratio of the extreme-ultraviolet 171-angstrom and 195-angstrom passbands. The emission measure diagnostic is the count rate in the 171-angstrom passband. We find essentially no temperature variation along the loops. We compare the observed loop structure with theoretical isothermal and nonisothermal static loop structure.
Cite
@article{arxiv.astro-ph/9903491,
title = {Temperature and Emission-Measure Profiles Along Long-Lived Solar Coronal Loops Observed with TRACE},
author = {Dawn D. Lenz and Edward E. DeLuca and Leon Golub and Robert Rosner and Jay A. Bookbinder},
journal= {arXiv preprint arXiv:astro-ph/9903491},
year = {2009}
}
Comments
10 pages, 3 postscript figures (LaTeX, uses aaspp4.sty). Accepted by ApJ Letters