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dc.contributor.author
Masters, A.
dc.contributor.author
Arridge, C. S.
dc.contributor.author
Dougherty, M. K.
dc.contributor.author
Bertucci, Cesar
dc.contributor.author
Billingham, L.
dc.contributor.author
Schwartz, S. J.
dc.contributor.author
Jackman, C. M.
dc.contributor.author
Bebesi, Z.
dc.contributor.author
Coates, A. J.
dc.contributor.author
Thomsen, M. F.
dc.date.available
2017-07-17T15:51:08Z
dc.date.issued
2008-12
dc.identifier.citation
Masters, A.; Arridge, C. S.; Dougherty, M. K.; Bertucci, Cesar; Billingham, L.; et al.; Cassini encounters with hot flow anomaly-like phenomena at Saturn's bow shock; American Geophysical Union; Geophysical Research Letters; 35; 2; 12-2008; 1-6
dc.identifier.issn
0094-8276
dc.identifier.uri
http://hdl.handle.net/11336/20678
dc.description.abstract
Crossings of Saturn´s magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini´s trajectory was approximately parallel to the magnetopause boundary given by a model of the surface. Magnetic field and electron data are used to identify excursions into the magnetosheath bounded by crossings of the magnetopause current layer. Minimum variance analysis of the magnetic field vector measurements is used to determine the normal to the boundary for each crossing. The normals corresponding to the crossings oscillate about an average orientation that is consistent with the unperturbed normal predicted by the surface model. This reveals the presence of regular boundary waves with a direction of propagation found to be within 24° of Saturn´s rotational equator. Two categories of boundary wave are identified: the first with a period of the order of hours, and the second with a period of 45±9 min. Based on the propagation direction and a comparison of magnetospheric and magnetosheath magnetic fields, we conclude that both types of wave were driven by the Kelvin-Helmholtz instability. The observed boundary perturbations are consistent with a superposition of different types of surface wave activity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Saturn
dc.subject
Magnetosphere
dc.subject
Magnetopause
dc.subject.classification
Astronomía
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Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Cassini encounters with hot flow anomaly-like phenomena at Saturn's bow shock
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-17T13:33:23Z
dc.journal.volume
35
dc.journal.number
2
dc.journal.pagination
1-6
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Masters, A.. Imperial College London; Reino Unido
dc.description.fil
Fil: Arridge, C. S.. University College London; Estados Unidos
dc.description.fil
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
dc.description.fil
Fil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Billingham, L.. Imperial College London; Reino Unido
dc.description.fil
Fil: Schwartz, S. J.. Imperial College London; Reino Unido
dc.description.fil
Fil: Jackman, C. M.. Imperial College London; Reino Unido
dc.description.fil
Fil: Bebesi, Z.. Research Institute for Particle and Nuclear Physics; Hungría
dc.description.fil
Fil: Coates, A. J.. University College London; Estados Unidos
dc.description.fil
Fil: Thomsen, M. F.. Los Alamos National Laboratory; Estados Unidos
dc.journal.title
Geophysical Research Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2007GL032371
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2007GL032371/abstract


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