Počet záznamů: 1
Oblique propagation of whistler mode waves in the chorus source region
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SYSNO ASEP 0348650 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Oblique propagation of whistler mode waves in the chorus source region Tvůrce(i) Santolík, Ondřej (UFA-U) RID, ORCID
Gurnett, D. A. (US)
Pickett, J. S. (US)
Chum, Jaroslav (UFA-U) RID, ORCID
Cornilleau-Wehrlin, N. (FR)Zdroj.dok. Journal of Geophysical Research - ISSN 0148-0227
Roč. 114, - (2009), A00F03/1-A00F03/12Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova STORM-TIME CHORUS ; MAGNETOSPHERIC CHORUS ; MAGNETIC-FIELD ; OUTER MAGNETOSPHERE ; POLARIZATION STATES ; OSCILLATOR MODEL ; VLF WAVES ; EMISSIONS ; HISS ; CLUSTER Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP IAA301120601 GA AV ČR - Akademie věd CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000272946500003 DOI 10.1029/2009JA014586 Anotace Whistler mode chorus has been shown to play a role in the process of local acceleration of electrons in the outer Van Allen radiation belt. Most of the quasi-linear and nonlinear theoretical studies assume that the waves propagate parallel to the terrestrial magnetic field. We show a case where this assumption is invalid. We use data from the Cluster spacecraft to characterize propagation and spectral properties of chorus. The recorded high-resolution waveforms show that chorus in the source region can be formed by a succession of discrete wave packets with decreasing frequency that sometimes change into shapeless hiss. These changes occur at the same time in the entire source region. Multicomponent measurements show that waves in both these regimes can be found at large angles to the terrestrial magnetic field. 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 2011
Počet záznamů: 1