Flares on A-Type Stars: Evidence for Heating of Solar Corona by Nanoflares?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00470392" target="_blank" >RIV/67985815:_____/16:00470392 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/16:10332793
Result on the web
<a href="http://dx.doi.org/10.3847/0004-637X/831/1/9" target="_blank" >http://dx.doi.org/10.3847/0004-637X/831/1/9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/0004-637X/831/1/9" target="_blank" >10.3847/0004-637X/831/1/9</a>
Alternative languages
Result language
angličtina
Original language name
Flares on A-Type Stars: Evidence for Heating of Solar Corona by Nanoflares?
Original language description
We analyzed the occurrence rates of flares on stars of spectral types K, G, F, and A, observed by Kepler. We found that the histogram of occurrence frequencies of stellar flares is systematically shifted toward a high-energy tail for A-type stars compared to stars of cooler spectral types. We extrapolated the fitted power laws toward flares with smaller energies ( nanoflares) and made estimates for total energy flux to stellar atmospheres by flares. We found that, for A-type stars, the total energy flux density was at least four-times smaller than for G. stars. We speculate that this deficit in energy supply may explain the lack of hot coronae on A-type stars. Our results indicate the. importance of nanoflares for heating and formation of the solar corona.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
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
—
Volume of the periodical
831
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"9/1"-"9/7"
UT code for WoS article
000386794900003
EID of the result in the Scopus database
2-s2.0-84994667307