{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360011144599185152.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2009gl037629"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2009GL037629"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2009GL037629"}}],"dc:title":[{"@value":"Source regions of banded chorus"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>ELF/VLF chorus emissions are very intense electromagnetic plasma waves that are naturally and spontaneously excited near the magnetic equatorial plane outside the plasmasphere during periods of magnetic disturbance. These emissions are believed to play an important role in the acceleration of 10 to 100 keV radiation belt electrons to MeV energies during the disturbed time periods. Spacecraft observations near the magnetic equatorial plane in the regions where chorus emissions are generated show that the chorus often appears in two distinct frequency bands, one band below <jats:italic>f</jats:italic><jats:sub><jats:italic>ce</jats:italic></jats:sub>/2 and one band above <jats:italic>f</jats:italic><jats:sub><jats:italic>ce</jats:italic></jats:sub>/2, where <jats:italic>f</jats:italic><jats:sub><jats:italic>ce</jats:italic></jats:sub> is the local electron gyrofrequency. This configuration is known as banded chorus. In the present paper we show that this type of configuration can be readily explained if it is assumed that the chorus is excited in ducts of either enhanced or depleted cold plasma density.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380011144599185154","@type":"Researcher","foaf:name":[{"@value":"T. F. Bell"}],"jpcoar:affiliationName":[{"@value":"STAR Laboratory Stanford University  Stanford California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011144599185155","@type":"Researcher","foaf:name":[{"@value":"U. S. Inan"}],"jpcoar:affiliationName":[{"@value":"STAR Laboratory Stanford University  Stanford California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011144599185152","@type":"Researcher","foaf:name":[{"@value":"N. Haque"}],"jpcoar:affiliationName":[{"@value":"STAR Laboratory Stanford University  Stanford California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380011144599185153","@type":"Researcher","foaf:name":[{"@value":"J. S. Pickett"}],"jpcoar:affiliationName":[{"@value":"Department of Physics and Astronomy University of Iowa  Iowa City Iowa USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00948276"},{"@type":"EISSN","@value":"19448007"}],"prism:publicationName":[{"@value":"Geophysical Research Letters"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2009-06","prism:volume":"36","prism:number":"11","prism:startingPage":"L11101"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2009GL037629"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2009GL037629"}],"createdAt":"2009-06-04","modifiedAt":"2023-10-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001335802552832","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Structures of dayside whistler-mode waves deduced from conjugate diffuse aurora"},{"@value":"Structures of dayside whistler‐mode waves deduced from conjugate diffuse aurora"}]},{"@id":"https://cir.nii.ac.jp/crid/1050001335841204224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Electron hybrid code simulation of whistler-mode chorus generation with real parameters in the Earth's inner magnetosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1050001338804864256","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"ELF/VLF wave propagation at subauroral latitudes: Conjugate observation between the ground and Van Allen Probes A"}]},{"@id":"https://cir.nii.ac.jp/crid/1050282677835957376","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Cyclotron Acceleration of Relativistic Electrons Through Landau Resonance With Obliquely Propagating Whistler‐Mode Chorus Emissions"},{"@value":"Cyclotron acceleration of relativistic electrons through landau resonance with obliquely propagating whistler mode chorus emissions"}]},{"@id":"https://cir.nii.ac.jp/crid/1050282810779263232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"THEMIS observation of chorus elements without a gap at half the gyrofrequency"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002216709656448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"PENGUIn/AGO and THEMIS conjugate observations of whistler mode chorus waves in the dayside uniform zone under steady solar wind and quiet geomagnetic conditions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360017282208016384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Slow Contraction of Flash Aurora Induced by an Isolated Chorus Element Ranging From Lower‐Band to Upper‐Band Frequencies in the Source Region"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565164301930112","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Geotail observation of upper band and lower band chorus elements in the outer magnetosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567179754169472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Nonlinear damping of chorus emissions at local half cyclotron frequencies observed by Geotail at <i>L</i> > 9"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2009gl037629"},{"@type":"CROSSREF","@value":"10.1029/2012ja017708_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1029/2012ja018242_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1029/2021gl097597_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1186/s40623-016-0568-0_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1002/2013ja019678_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1002/2015ja022264_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1002/2013ja019696_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1029/2012ja018076_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"},{"@type":"CROSSREF","@value":"10.1029/2018ja026374_references_DOI_WVoCqs3tauCkQliJShXv8oMRsNS"}]}