Počet záznamů: 1
Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions
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SYSNO ASEP 0367472 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions Tvůrce(i) Shoji, M. (JP)
Omura, Y. (JP)
Grison, Benjamin (UFA-U) RID, ORCID
Pickett, J. (US)
Dandouras, I. (FR)
Engebretson, M. (US)Zdroj.dok. Geophysical Research Letters. - : Wiley - ISSN 0094-8276
Roč. 38, - (2011), L17102/1-L17102/5Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova 1-2 MAGNETIC PULSATIONS ; EQUATORIAL MAGNETOSPHERE ; DISTRIBUTIONS ; STORMS Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GPP209/11/P848 GA ČR - Grantová agentura ČR CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000294620200003 DOI 10.1029/2011GL048427 Anotace 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. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2012 Elektronická adresa http://www.agu.org/pubs/crossref/2011/2011GL048427.shtml
Počet záznamů: 1