Growth Rates of the Electrostatic Waves in Radio Zebra Models
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00510991" target="_blank" >RIV/67985815:_____/19:00510991 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.3847/1538-4357/ab2bfc" target="_blank" >https://doi.org/10.3847/1538-4357/ab2bfc</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ab2bfc" target="_blank" >10.3847/1538-4357/ab2bfc</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Growth Rates of the Electrostatic Waves in Radio Zebra Models
Popis výsledku v původním jazyce
Zebras were observed not only in the solar radio emission but also in radio emissions of Jupiter and the Crab Nebula pulsar. In their models, growth rates of the electrostatic waves play an important role. Considering the plasma composed from the thermal background plasma and hot and rare component with the Dory-Guest-Harris distribution, we compute the growth rates. and dispersion branches of the electrostatic waves in the omega - k(perpendicular to) domain. We show complexity of the electrostatic wave branches in the upper-hybrid band. In order to compare the results, which we obtained using the kinetic theory and particle-in-cell (PIC) simulations, we define and compute the integrated growth rate Gamma, where the “characteristic width” of dispersion branches was considered. We found a very good agreement between the integrated growth rates and those from PIC simulations. For maximal and minimal G we showed locations of dispersion branches in the omega - k(perpendicular to) domain. We found that G has a maximum when the dispersion branches not only cross the region with high growth rates., but when the dispersion branches in this region are sufficiently long and wide. We also mentioned the effects of changes in the background plasma and hot component temperatures.
Název v anglickém jazyce
Growth Rates of the Electrostatic Waves in Radio Zebra Models
Popis výsledku anglicky
Zebras were observed not only in the solar radio emission but also in radio emissions of Jupiter and the Crab Nebula pulsar. In their models, growth rates of the electrostatic waves play an important role. Considering the plasma composed from the thermal background plasma and hot and rare component with the Dory-Guest-Harris distribution, we compute the growth rates. and dispersion branches of the electrostatic waves in the omega - k(perpendicular to) domain. We show complexity of the electrostatic wave branches in the upper-hybrid band. In order to compare the results, which we obtained using the kinetic theory and particle-in-cell (PIC) simulations, we define and compute the integrated growth rate Gamma, where the “characteristic width” of dispersion branches was considered. We found a very good agreement between the integrated growth rates and those from PIC simulations. For maximal and minimal G we showed locations of dispersion branches in the omega - k(perpendicular to) domain. We found that G has a maximum when the dispersion branches not only cross the region with high growth rates., but when the dispersion branches in this region are sufficiently long and wide. We also mentioned the effects of changes in the background plasma and hot component temperatures.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Astrophysical Journal
ISSN
1538-4357
e-ISSN
—
Svazek periodika
881
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
8
Strana od-do
21
Kód UT WoS článku
000480323000002
EID výsledku v databázi Scopus
2-s2.0-85071978806