Latitudinal extension of the sources of continuum radiations
| Autor: | Patrick Canu, Fazakerley, A., Vallières, X., Rauch, J., Decreau, P., Dominique Fontaine, Carr, C., Rodrigue Piberne |
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| Přispěvatelé: | Canu, Patrick, Laboratoire de Physique des Plasmas (LPP), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Mullard Space Science Laboratory (MSSL), University College of London [London] (UCL), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Blackett Laboratory, Imperial College London |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Cluster 29th workshop Cluster 29th workshop, Oct 2019, Lanzarote Canary Islands, Spain HAL |
| Popis: | International audience; The electromagnetic radio emissions known as 'continuum radiation' are widelyobserved for decades in planetary magnetospheres. Although their main sourcelocation is well identified for Earth in the vicinity of the equatorial plasmapause andits generation mechanism generally associated with electrostatic emissions arisingbetween half harmonics of the electron gyro harmonics, many details of theircharacteristics and source are still missing. Recent observations had suggested newfeatures in their description. For example, studies based on the Whisperinstruments have shown that continuum sources can also be located at mid latitudesand can be generated at exact harmonics of the electron frequency. The higherperigee of the present phase of the Cluster extended mission allows the spacecraftto skim the sources regions close to the plasmapause and to explore their latitudinalextension thanks to its polar orbit. This higher perigee also allows to get Peace data,seldom available at the lower perigees earlier in the mission, to characterize theelectrons populations at the origin of these emissions. We present here the firstanalysis of the best events observed so far. |
| Databáze: | OpenAIRE |
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