The Structure and Dynamics of the Upper Chromosphere and Lower Transition Region as Revealed by the Subarcsecond VAULT Observations |
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| Authors: | A Vourlidas B Sanchez Andrade-Nu?o E Landi S Patsourakos L Teriaca U Schühle C M Korendyke and I Nestoras |
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| Institution: | (1) Department of Physics, Montana State University – Bozeman, Bozeman, MT 59717, U.S.A.;(2) Lockheed-Martin Palo Alto Advanced Technology Center, L9-41, 3251 Hanover Street, Palo Alto, CA, 94303, U.S.A;(3) Naval Research Laboratory, Hurlburt Center for Space Research, Code 7660, USA |
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| Abstract: | The Very high Angular resolution ULtraviolet Telescope (VAULT) is a sounding rocket payload built to study the crucial interface
between the solar chromosphere and the corona by observing the strongest line in the solar spectrum, the Ly α line at 1216 ?.
In two flights, VAULT succeeded in obtaining the first ever subarcsecond (
$0.5\hbox{$0.5\hbox{
) images of this region with high sensitivity and cadence. Detailed analyses of those observations contributed significantly
to new ideas about the nature of the transition region. Here, we present a broad overview of the Ly α atmosphere as revealed
by the VAULT observations and bring together past results and new analyses from the second VAULT flight to create a synthesis
of our current knowledge of the high-resolution Ly α Sun. We hope that this work will serve as a good reference for the design
of upcoming Ly α telescopes and observing plans. |
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