The Color and Brightness of the F-corona Inferred from the 2019 July 2 Total Solar Eclipse
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU140878" target="_blank" >RIV/00216305:26210/21:PU140878 - isvavai.cz</a>
Result on the web
<a href="https://arxiv.org/pdf/2103.02113.pdf" target="_blank" >https://arxiv.org/pdf/2103.02113.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/abea79" target="_blank" >10.3847/1538-4357/abea79</a>
Alternative languages
Result language
angličtina
Original language name
The Color and Brightness of the F-corona Inferred from the 2019 July 2 Total Solar Eclipse
Original language description
Total solar eclipses (TSEs) provide a unique opportunity to quantify the properties of the K-corona (electrons), F-corona (dust), and E-corona (ions) continuously from the solar surface out to a few solar radii. We apply a novel inversion method to separate emission from the K- and F-corona continua using unpolarized total brightness (tB) observations from five 0.5 nm bandpasses acquired during the 2019 July 2 TSE between 529.5 and 788.4 nm. The wavelength dependence relative to the photosphere (i.e., color) of the F-corona itself is used to infer the tB of the K- and F-corona for each line of sight. We compare our K-corona emission results with the Mauna Loa Solar Observatory (MLSO) K-Cor polarized brightness (pB) observations from the day of the eclipse, and the forward modeled K-corona intensity from the Predictive Science Inc. (PSI) magnetohydrodynamic (MHD) model prediction. Our results are generally consistent with previous work and match both the MLSO data and PSI-MHD predictions quite well, supporting the validity of our approach and of the PSI-MHD model. However, we find that the tB of the F-corona is higher than expected in the low corona, perhaps indicating that the F-corona is slightly polarized-challenging the common assumption that the F-corona is entirely unpolarized.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ASTROPHYSICAL JOURNAL
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
912
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
1-15
UT code for WoS article
000647142400001
EID of the result in the Scopus database
2-s2.0-85105997807