Numerical Simulation of Sub-Terahertz Emission of the Flare Chromosphere: the Event of July 4, 2012
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552258" target="_blank" >RIV/67985815:_____/21:00552258 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1134/S0016793221070136" target="_blank" >https://doi.org/10.1134/S0016793221070136</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S0016793221070136" target="_blank" >10.1134/S0016793221070136</a>
Alternative languages
Result language
angličtina
Original language name
Numerical Simulation of Sub-Terahertz Emission of the Flare Chromosphere: the Event of July 4, 2012
Original language description
The temporal evolution of thermal bremsstrahlung sub-THz emission from a flare chromosphere and transition region is analyzed based on the F-CHROMA solar flare model database (https://www.fchroma.org ) and solar flare observations with the RT-7.5 radio telescope at 93 and 140 GHz on July 4, 2012. The model is based on the RADYN numerical code, which describes the response of chromospheric background plasma to the action of a beam of accelerated electrons in the form of a triangular pulse. The positive slope of the spectrum in the sub-THz frequency range has been formed over the entire burst. A thin layer of low temperature and high plasma density (the so-called chromospheric condensation) appears. It moves to the region of higher altitudes and effectively absorbs the sub-THz emission. It is shown based on the RHESSI hard X-ray observations that the chromospheric thermal plasma cannot provide the observed sub-THz emission fluxes during the solar flare on July 4, 2012. The cause of the obtained discrepancy is discussed.
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
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geomagnetism and Aeronomy
ISSN
0016-7932
e-ISSN
1555-645X
Volume of the periodical
61
Issue of the periodical within the volume
7
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
7
Pages from-to
1045-1051
UT code for WoS article
000736717300020
EID of the result in the Scopus database
2-s2.0-85122082341