Solar Transition-Region Lines Observed by the Interface Region Imaging Spectrograph: Diagnostics for the O IV and Si IV Lines
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00399493" target="_blank" >RIV/67985815:_____/14:00399493 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/2041-8205/780/1/L12" target="_blank" >http://dx.doi.org/10.1088/2041-8205/780/1/L12</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/2041-8205/780/1/L12" target="_blank" >10.1088/2041-8205/780/1/L12</a>
Alternative languages
Result language
angličtina
Original language name
Solar Transition-Region Lines Observed by the Interface Region Imaging Spectrograph: Diagnostics for the O IV and Si IV Lines
Original language description
The formation of the transition region O IV and Si IV lines observable by the Interface Region Imaging Spectrograph (IRIS) is investigated for both Maxwellian and non-Maxwellian conditions characterized by a ?-distribution exhibiting a high-energy tail.The Si IV lines are formed at lower temperatures than the O IV lines for all ?. In non-Maxwellian situations with lower ?, the contribution functions are shifted to lower temperatures. Combined with the slope of the differential emission measure, it is possible for the Si IV lines to be formed at very different regions of the solar transition region than the O IV lines; possibly close to the solar chromosphere. Such situations might be discernible by IRIS. It is found that photoexcitation can be important for the Si IV lines, but is negligible for the O IV lines. The usefulness of the O IV ratios for density diagnostics independently of ? is investigated and it is found that the O IV 1404.78 ?/1399.77 ? ratio provides a good density dia
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP209%2F12%2F1652" target="_blank" >GAP209/12/1652: Analysis of the non-thermal electron distribution in the solar corona and transition region</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
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 Letters
ISSN
2041-8205
e-ISSN
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Volume of the periodical
780
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"L12/1"-"L12/7"
UT code for WoS article
000328261500012
EID of the result in the Scopus database
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