Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F11%3A00367472" target="_blank" >RIV/68378289:_____/11:00367472 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.agu.org/pubs/crossref/2011/2011GL048427.shtml" target="_blank" >http://www.agu.org/pubs/crossref/2011/2011GL048427.shtml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2011GL048427" target="_blank" >10.1029/2011GL048427</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions

Popis výsledku v původním jazyce

Electromagnetic ion cyclotron (EMIC) triggered emissions with rising tones between the H(+) and He(+) cyclotron frequencies were found in the inner magnetosphere by the recent Cluster observations. Another type of EMIC wave with a constant frequency is occasionally observed below the He(+) cyclotron frequency after the multiple EMIC triggered emissions. We performed a self-consistent hybrid simulation with a one-dimensional cylindrical magnetic flux model approximating the dipole magnetic field of the Earth's inner magnetosphere. In the presence of energetic protons with a sufficient density and temperature anisotropy, multiple EMIC triggered emissions are reproduced due to the nonlinear wave growth mechanism of rising-tone chorus emissions, and a constant frequency wave in the He(+) EMIC branch is subsequently generated. Through interaction with the multiple EMIC rising-tone emissions, the velocity distribution function of the energetic protons is strongly modified.

Název v anglickém jazyce

Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions

Popis výsledku anglicky

Electromagnetic ion cyclotron (EMIC) triggered emissions with rising tones between the H(+) and He(+) cyclotron frequencies were found in the inner magnetosphere by the recent Cluster observations. Another type of EMIC wave with a constant frequency is occasionally observed below the He(+) cyclotron frequency after the multiple EMIC triggered emissions. We performed a self-consistent hybrid simulation with a one-dimensional cylindrical magnetic flux model approximating the dipole magnetic field of the Earth's inner magnetosphere. In the presence of energetic protons with a sufficient density and temperature anisotropy, multiple EMIC triggered emissions are reproduced due to the nonlinear wave growth mechanism of rising-tone chorus emissions, and a constant frequency wave in the He(+) EMIC branch is subsequently generated. Through interaction with the multiple EMIC rising-tone emissions, the velocity distribution function of the energetic protons is strongly modified.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GPP209%2F11%2FP848" target="_blank" >GPP209/11/P848: Úzkopásmové vlnové emise na iontových škálách v magnetosféře Země</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

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Svazek periodika

38

Číslo periodika v rámci svazku

—

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

"L17102/1"-"L17102/5"

Kód UT WoS článku

000294620200003

EID výsledku v databázi Scopus

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