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Article: Waves in Kinetic-Scale Magnetic Dips: MMS Observations in the Magnetosheath

TitleWaves in Kinetic-Scale Magnetic Dips: MMS Observations in the Magnetosheath
Authors
Keywordselectron cyclotron waves
electrostatic solitary waves
kinetic scale
magnetic hole
origin of waves
whistler mode waves
Issue Date2019
Citation
Geophysical Research Letters, 2019, v. 46, n. 2, p. 523-533 How to Cite?
AbstractKinetic-scale magnetic dips (KSMDs), with a significant depression in magnetic field strength, and scale length close to and less than one proton gyroradius, were reported in the turbulent plasmas both in recent observation and numerical simulation studies. These KSMDs likely play important roles in energy conversion and dissipation. In this study, we present observations of the KSMDs that are labeled whistler mode waves, electrostatic solitary waves, and electron cyclotron waves in the magnetosheath. The observations suggest that electron temperature anisotropy or beams within KSMD structures provide free energy to generate these waves. In addition, the occurrence rates of the waves are higher in the center of the magnetic dips than at their edges, implying that the KSMDs might be the origin of various kinds of waves. We suggest that the KSMDs could provide favorable conditions for the generation of waves and transfer energy to the waves in turbulent magnetosheath plasmas.
Persistent Identifierhttp://hdl.handle.net/10722/334572
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYao, S. T.-
dc.contributor.authorShi, Q. Q.-
dc.contributor.authorYao, Z. H.-
dc.contributor.authorLi, J. X.-
dc.contributor.authorYue, C.-
dc.contributor.authorTao, X.-
dc.contributor.authorDegeling, A. W.-
dc.contributor.authorZong, Q. G.-
dc.contributor.authorWang, X. G.-
dc.contributor.authorTian, A. M.-
dc.contributor.authorRussell, C. T.-
dc.contributor.authorZhou, X. Z.-
dc.contributor.authorGuo, R. L.-
dc.contributor.authorRae, I. J.-
dc.contributor.authorFu, H. S.-
dc.contributor.authorZhang, H.-
dc.contributor.authorLi, L.-
dc.contributor.authorLe Contel, O.-
dc.contributor.authorTorbert, R. B.-
dc.contributor.authorErgun, R. E.-
dc.contributor.authorLindqvist, P. A.-
dc.contributor.authorPollock, C. J.-
dc.contributor.authorGiles, B. L.-
dc.date.accessioned2023-10-20T06:49:06Z-
dc.date.available2023-10-20T06:49:06Z-
dc.date.issued2019-
dc.identifier.citationGeophysical Research Letters, 2019, v. 46, n. 2, p. 523-533-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334572-
dc.description.abstractKinetic-scale magnetic dips (KSMDs), with a significant depression in magnetic field strength, and scale length close to and less than one proton gyroradius, were reported in the turbulent plasmas both in recent observation and numerical simulation studies. These KSMDs likely play important roles in energy conversion and dissipation. In this study, we present observations of the KSMDs that are labeled whistler mode waves, electrostatic solitary waves, and electron cyclotron waves in the magnetosheath. The observations suggest that electron temperature anisotropy or beams within KSMD structures provide free energy to generate these waves. In addition, the occurrence rates of the waves are higher in the center of the magnetic dips than at their edges, implying that the KSMDs might be the origin of various kinds of waves. We suggest that the KSMDs could provide favorable conditions for the generation of waves and transfer energy to the waves in turbulent magnetosheath plasmas.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectelectron cyclotron waves-
dc.subjectelectrostatic solitary waves-
dc.subjectkinetic scale-
dc.subjectmagnetic hole-
dc.subjectorigin of waves-
dc.subjectwhistler mode waves-
dc.titleWaves in Kinetic-Scale Magnetic Dips: MMS Observations in the Magnetosheath-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2018GL080696-
dc.identifier.scopuseid_2-s2.0-85060180006-
dc.identifier.volume46-
dc.identifier.issue2-
dc.identifier.spage523-
dc.identifier.epage533-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000458607400001-

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