About: Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report observations of remarkable frequency differences and time shifts between the corresponding elements of lower band chorus recorded by the four Cluster spacecraft at low magnetic latitudes. Surprisingly, the spacecraft located closer to the equator systematically received the corresponding chorus elements later than the spacecraft located at higher magnetic latitudes. The time shifts and frequency differences depended almost linearly on the perpendicular distance between the various spacecraft. Analysis of data shows that chorus emissions were generated with highly oblique angles of propagation. We show that the sources moving across the magnetic field lines are reasonably consistent with these observations. We propose that the transverse motion of the chorus sources is a consequence of a feedback between the oblique waves and counter streaming electrons during nonlinear cyclotron interactions, and we provide an estimate of the transverse velocity of the source. We report observations of remarkable frequency differences and time shifts between the corresponding elements of lower band chorus recorded by the four Cluster spacecraft at low magnetic latitudes. Surprisingly, the spacecraft located closer to the equator systematically received the corresponding chorus elements later than the spacecraft located at higher magnetic latitudes. The time shifts and frequency differences depended almost linearly on the perpendicular distance between the various spacecraft. Analysis of data shows that chorus emissions were generated with highly oblique angles of propagation. We show that the sources moving across the magnetic field lines are reasonably consistent with these observations. We propose that the transverse motion of the chorus sources is a consequence of a feedback between the oblique waves and counter streaming electrons during nonlinear cyclotron interactions, and we provide an estimate of the transverse velocity of the source. (en)
Title	Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft (en)
skos:prefLabel	Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft (en)
skos:notation	RIV/68378289:_____/09:00335031!RIV10-AV0-68378289
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA205/09/1253), P(IAA301120601), Z(AV0Z30420517), Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Chum, Jaroslav Santolík, Ondřej
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky atmosféry AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	330568
http://linked.open...ai/riv/idVysledku	RIV/68378289:_____/09:00335031
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	plasma waves; wave particle interaction; inner magnetosphere; radiation belt (en)
http://linked.open.../riv/klicoveSlovo	inner magnetosphere radiation belt wave particle interaction plasma waves
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6B43D046ED28]
http://linked.open...i/riv/nazevZdroje	Journal of Geophysical Research
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Electromagnetic phenomena coupling the troposphere, mesosphere, ionosphere and magnetosphere Investigation of plasma waves in the magnetosphere and in the solar wind
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	114
http://linked.open...iv/tvurceVysledku	Chum, Jaroslav Santolík, Ondřej Gurnett, D. A. Pickett, J. S.
http://linked.open...ain/vavai/riv/wos	000272946500001
http://linked.open...n/vavai/riv/zamer	Studium atmosférického obalu Země v interakci s pozemskými a kosmickými vlivy Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0148-0227
number of pages	13 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft Oblique lower band chorus waves: Time shifts between discrete elements observed by the Cluster spacecraft

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