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Statistical Observa...
Statistical Observations of Proton-Band Electromagnetic Ion Cyclotron Waves in the Outer Magnetosphere: Full Wavevector Determination
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- Toledo-Redondo, S. (författare)
- Department of Electromagnetism and Electronics, University of Murcia, Murcia, Spain; Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France
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- Lee, J. H. (författare)
- The Aerospace Corporation, Los Angeles, CA, USA
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- Vines, S. K. (författare)
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
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- Albert, I. F. (författare)
- Department of Electromagnetism and Electronics, University of Murcia, Murcia, Spain
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- André, M. (författare)
- IRF Swedish Institute of Space Physics, Uppsala, Sweden
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- Castilla, A. (författare)
- Department of Electromagnetism and Electronics, University of Murcia, Murcia, Spain
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- Dargent, J. P. (författare)
- Institut für Theoretische Physik, Ruhr-Universität Bochum, Bochum, Germany
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- Fu, H. S. (författare)
- School of Space and Environment, Beihang University, Beijing, China; Key Laboratory of Space Environment Monitoring and Information Processing, Ministry of Industry and Information Technology, Beijing, China
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- Fuselier, S. A. (författare)
- Southwest Research Institute, San Antonio, TX, USA; University of Texas at San Antonio, San Antonio, TX, USA
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- Genot, V. (författare)
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France
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- Graham, D. B. (författare)
- IRF Swedish Institute of Space Physics, Uppsala, Sweden
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- Kitamura, N. (författare)
- Institute for Space-Earth Environmental Research (ISEE), Nagoya University, Nagoya, Japan
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- Khotyaintsev, Yu V. (författare)
- IRF Swedish Institute of Space Physics, Uppsala, Sweden
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- Lavraud, B. (författare)
- Laboratoire d'Astrophysique deBordeaux, Bordeaux, France
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- Montagud-Camps, V. (författare)
- Department of Electromagnetism and Electronics, University of Murcia, Murcia, Spain
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- Navarro, E. A. (författare)
- IRTIC Institute/ETSE, Universitat de València, Avd. Universitat, Burjassot, Spain
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- Norgren, C. (författare)
- IRF Swedish Institute of Space Physics, Uppsala, Sweden
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- Perrone, D. (författare)
- ASI—Italian Space Agency, Via del Politecnico snc, Rome, Italy
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- Phan, T. D. (författare)
- SSL, University of California, Berkeley, CA, USA
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- Portí, J. (författare)
- Department of Applied Physics, University of Granada, Granada, Spain
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- Salinas, A. (författare)
- Department of Electromagnetism and Matter Physics, University of Granada, Granada, Spain
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- Stawarz, J. E. (författare)
- Department of Mathematics, Physics, and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK
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- Vaivads, Andris (författare)
- KTH,Rymd- och plasmafysik,Ventspils University of Applied Sciences, Ventspils, Latvia
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(creator_code:org_t)
- John Wiley and Sons Inc, 2024
- 2024
- Engelska.
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Ingår i: Journal of Geophysical Research - Space Physics. - : John Wiley and Sons Inc. - 2169-9380 .- 2169-9402. ; 129:5
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Electromagnetic Ion Cyclotron (EMIC) waves mediate energy transfer from the solar wind to the magnetosphere, relativistic electron precipitation, or thermalization of the ring current population, to name a few. How these processes take place depends on the wave properties, such as the wavevector and polarization. However, inferring the wavevector from in-situ measurements is problematic since one needs to disentangle spatial and time variations. Using 8 years of Magnetospheric Multiscale (MMS) mission observations in the dayside magnetosphere, we present an algorithm to detect proton-band EMIC waves in the Earth's dayside magnetosphere, and find that they are present roughly 15% of the time. Their normalized frequency presents a dawn-dusk asymmetry, with waves in the dawn flank magnetosphere having larger frequency than in the dusk, subsolar, and dawn near subsolar region. It is shown that the observations are unstable to the ion cyclotron instability. We obtain the wave polarization and wavevector by comparing Single Value Decomposition and Ampere methods. We observe that for most waves the perpendicular wavenumber (k⊥) is larger than the inverse of the proton gyroradius (ρi), that is, k⊥ρi > 1, while the parallel wavenumber is smaller than the inverse of the ion gyroradius, that is, k‖ρi < 1. Left-hand polarized waves are associated with small wave normal angles (θBk < 30°), while linearly polarized waves are associated with large wave normal angles (θBk > 30°). This work constitutes, to our knowledge, the first attempt to statistically infer the full wavevector of proton-band EMIC waves observed in the outer magnetosphere.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- ion cylotron waves
- magnetosphere
- plasma waves
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Toledo-Redondo, ...
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Lee, J. H.
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Vines, S. K.
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Albert, I. F.
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André, M.
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Castilla, A.
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visa fler...
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Dargent, J. P.
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Fu, H. S.
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Fuselier, S. A.
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Genot, V.
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Graham, D. B.
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Kitamura, N.
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Khotyaintsev, Yu ...
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Lavraud, B.
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Montagud-Camps, ...
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Navarro, E. A.
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Norgren, C.
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Perrone, D.
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Phan, T. D.
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Portí, J.
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Salinas, A.
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Stawarz, J. E.
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Vaivads, Andris
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