Numerical Simulation of Sub-Terahertz Thermal Emission: RADYN Code

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00539776" target="_blank" >RIV/67985815:_____/20:00539776 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1134/S0016793220080174" target="_blank" >https://doi.org/10.1134/S0016793220080174</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S0016793220080174" target="_blank" >10.1134/S0016793220080174</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Simulation of Sub-Terahertz Thermal Emission: RADYN Code

Popis výsledku v původním jazyce

The temporal evolution of thermal bremsstrahlung in the sub-terahertz range is calculated for F-CHROMA models of the flare chromosphere and transition region (https://www.fchroma.org). These models are calculated based on the numerical solution of the system of equations of radiation hydrodynamics with the RADYN code, which describes the response of chromospheric plasma to the flux of accelerated electrons in the form of a triangular pulse. It is found that the positive slope of the spectrum in the frequency range of 93-400 GHz is formed during the entire burst. The sub-THz radiation peak can be both ahead and behind the maximum of the function of the injection of energetic electrons depending on the number and index of the spectrum of precipitating particles. In some cases, the time profile of the sub-THz radiation is quite complex and pulsating due to gas-dynamic phenomena in the chromosphere and transition region.

Název v anglickém jazyce

Numerical Simulation of Sub-Terahertz Thermal Emission: RADYN Code

Popis výsledku anglicky

The temporal evolution of thermal bremsstrahlung in the sub-terahertz range is calculated for F-CHROMA models of the flare chromosphere and transition region (https://www.fchroma.org). These models are calculated based on the numerical solution of the system of equations of radiation hydrodynamics with the RADYN code, which describes the response of chromospheric plasma to the flux of accelerated electrons in the form of a triangular pulse. It is found that the positive slope of the spectrum in the frequency range of 93-400 GHz is formed during the entire burst. The sub-THz radiation peak can be both ahead and behind the maximum of the function of the injection of energetic electrons depending on the number and index of the spectrum of precipitating particles. In some cases, the time profile of the sub-THz radiation is quite complex and pulsating due to gas-dynamic phenomena in the chromosphere and transition region.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LM2015067" target="_blank" >LM2015067: Atacama Large Millimeter / Submillimeter Array – účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geomagnetism and Aeronomy

ISSN

0016-7932

e-ISSN

1555-645X

Svazek periodika

60

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

8

Strana od-do

1038-1049

Kód UT WoS článku

000612382300007

EID výsledku v databázi Scopus

2-s2.0-85099966605