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Multispacecraft Cluster observations of quasiperiodic emissions close to the geomagnetic equator
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SYSNO ASEP 0441083 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Multispacecraft Cluster observations of quasiperiodic emissions close to the geomagnetic equator Tvůrce(i) Němec, F. (CZ)
Pickett, J. S. (US)
Santolík, Ondřej (UFA-U) RID, ORCIDZdroj.dok. Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 119, č. 11 (2014), s. 9101-9112Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova QP emissions ; Cluster spacecraft Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GAP205/10/2279 GA ČR - Grantová agentura ČR LH11122 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFA-U - RVO:68378289 UT WOS 000346792100027 DOI 10.1002/2014JA020321 Anotace We present a detailed analysis of three electromagnetic wave events observed by the Cluster Wide-Band Data instruments at frequencies of a few kilohertz, which exhibit a periodic time modulation of the wave intensity (quasiperiodic emissions). The events were measured when crossing the geomagnetic equator at radial distances of about 3-4 R-E during the close separation campaign in July-October 2013. Coincident compressional magnetic field pulsations with the magnitude on the order of a few tenths of nanotesla were detected in two events. Their period corresponded to the modulation period of the quasiperiodic emissions in one event, while it was about double in the other. A possible explanation for this discrepancy between the two periods is given. Although Cluster 1, Cluster 3, and Cluster 4 were close to each other, Cluster 2 was located by more than 0.5 R-E closer to the Earth. 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 2015
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