Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape

Autores
Edberg, N. J. T.; Wahlund, J. E.; Ågren, K.; Morooka, M. W.; Modolo, R.; Bertucci, Cesar; Dougherty, M. K.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present electron temperature and density measurements of Titan's cold ionospheric plasma from the Langmuir probe instrument on Cassini from 52 flybys. An expression of the density as a function of temperature is presented for altitudes below two Titan radii. The density falls off exponentially with increased temperature as log(ne) = −2.0log(Te) + 0.6 on average around Titan. We show that this relation varies with location around Titan as well as with the solar illumination direction. Significant heating of the electrons appears to take place on the night/wake side of Titan as the density-temperature relation is less steep there. Furthermore, we show that the magnetospheric ram pressure is not balanced by the thermal and magnetic pressure in the topside ionosphere and discuss its implications for plasma escape. The cold ionospheric plasma of Titan extends to higher altitudes in the wake region, indicating the loss of atmosphere down the induced magnetospheric tail.
Fil: Edberg, N. J. T.. Swedish Institute of Space Physics; Suecia
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
Fil: Ågren, K.. Swedish Institute of Space Physics; Suecia
Fil: Morooka, M. W.. Swedish Institute of Space Physics; Suecia
Fil: Modolo, R.. LATMOS; Francia
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
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
Materia
Ionosphere: Ionosphere/magnetosphere interactions
Ionosphere: Planetary ionospheres
Ionosphere: Plasma temperature and density
Magnetospheric Physics: Magnetosphere interactions with satellites and rings
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/20445
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escapeEdberg, N. J. T.Wahlund, J. E.Ågren, K.Morooka, M. W.Modolo, R.Bertucci, CesarDougherty, M. K.Ionosphere: Ionosphere/magnetosphere interactionsIonosphere: Planetary ionospheresIonosphere: Plasma temperature and densityMagnetospheric Physics: Magnetosphere interactions with satellites and ringshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present electron temperature and density measurements of Titan's cold ionospheric plasma from the Langmuir probe instrument on Cassini from 52 flybys. An expression of the density as a function of temperature is presented for altitudes below two Titan radii. The density falls off exponentially with increased temperature as log(ne) = −2.0log(Te) + 0.6 on average around Titan. We show that this relation varies with location around Titan as well as with the solar illumination direction. Significant heating of the electrons appears to take place on the night/wake side of Titan as the density-temperature relation is less steep there. Furthermore, we show that the magnetospheric ram pressure is not balanced by the thermal and magnetic pressure in the topside ionosphere and discuss its implications for plasma escape. The cold ionospheric plasma of Titan extends to higher altitudes in the wake region, indicating the loss of atmosphere down the induced magnetospheric tail.Fil: Edberg, N. J. T.. Swedish Institute of Space Physics; SueciaFil: Wahlund, J. E.. Swedish Institute of Space Physics; SueciaFil: Ågren, K.. Swedish Institute of Space Physics; SueciaFil: Morooka, M. W.. Swedish Institute of Space Physics; SueciaFil: Modolo, R.. LATMOS; FranciaFil: 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; ArgentinaFil: Dougherty, M. K.. Imperial College London; Reino UnidoAmerican Geophysical Union2010-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20445Edberg, N. J. T.; Wahlund, J. E.; Ågren, K.; Morooka, M. W.; Modolo, R.; et al.; Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape; American Geophysical Union; Geophysical Research Letters; 37; L20105; 10-2010; 1-50094-8276CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1029/2010GL044544info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2010GL044544/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:27Zoai:ri.conicet.gov.ar:11336/20445instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:41:27.589CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
title Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
spellingShingle Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
Edberg, N. J. T.
Ionosphere: Ionosphere/magnetosphere interactions
Ionosphere: Planetary ionospheres
Ionosphere: Plasma temperature and density
Magnetospheric Physics: Magnetosphere interactions with satellites and rings
title_short Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
title_full Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
title_fullStr Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
title_full_unstemmed Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
title_sort Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
dc.creator.none.fl_str_mv Edberg, N. J. T.
Wahlund, J. E.
Ågren, K.
Morooka, M. W.
Modolo, R.
Bertucci, Cesar
Dougherty, M. K.
author Edberg, N. J. T.
author_facet Edberg, N. J. T.
Wahlund, J. E.
Ågren, K.
Morooka, M. W.
Modolo, R.
Bertucci, Cesar
Dougherty, M. K.
author_role author
author2 Wahlund, J. E.
Ågren, K.
Morooka, M. W.
Modolo, R.
Bertucci, Cesar
Dougherty, M. K.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ionosphere: Ionosphere/magnetosphere interactions
Ionosphere: Planetary ionospheres
Ionosphere: Plasma temperature and density
Magnetospheric Physics: Magnetosphere interactions with satellites and rings
topic Ionosphere: Ionosphere/magnetosphere interactions
Ionosphere: Planetary ionospheres
Ionosphere: Plasma temperature and density
Magnetospheric Physics: Magnetosphere interactions with satellites and rings
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present electron temperature and density measurements of Titan's cold ionospheric plasma from the Langmuir probe instrument on Cassini from 52 flybys. An expression of the density as a function of temperature is presented for altitudes below two Titan radii. The density falls off exponentially with increased temperature as log(ne) = −2.0log(Te) + 0.6 on average around Titan. We show that this relation varies with location around Titan as well as with the solar illumination direction. Significant heating of the electrons appears to take place on the night/wake side of Titan as the density-temperature relation is less steep there. Furthermore, we show that the magnetospheric ram pressure is not balanced by the thermal and magnetic pressure in the topside ionosphere and discuss its implications for plasma escape. The cold ionospheric plasma of Titan extends to higher altitudes in the wake region, indicating the loss of atmosphere down the induced magnetospheric tail.
Fil: Edberg, N. J. T.. Swedish Institute of Space Physics; Suecia
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
Fil: Ågren, K.. Swedish Institute of Space Physics; Suecia
Fil: Morooka, M. W.. Swedish Institute of Space Physics; Suecia
Fil: Modolo, R.. LATMOS; Francia
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
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
description We present electron temperature and density measurements of Titan's cold ionospheric plasma from the Langmuir probe instrument on Cassini from 52 flybys. An expression of the density as a function of temperature is presented for altitudes below two Titan radii. The density falls off exponentially with increased temperature as log(ne) = −2.0log(Te) + 0.6 on average around Titan. We show that this relation varies with location around Titan as well as with the solar illumination direction. Significant heating of the electrons appears to take place on the night/wake side of Titan as the density-temperature relation is less steep there. Furthermore, we show that the magnetospheric ram pressure is not balanced by the thermal and magnetic pressure in the topside ionosphere and discuss its implications for plasma escape. The cold ionospheric plasma of Titan extends to higher altitudes in the wake region, indicating the loss of atmosphere down the induced magnetospheric tail.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/20445
Edberg, N. J. T.; Wahlund, J. E.; Ågren, K.; Morooka, M. W.; Modolo, R.; et al.; Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape; American Geophysical Union; Geophysical Research Letters; 37; L20105; 10-2010; 1-5
0094-8276
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20445
identifier_str_mv Edberg, N. J. T.; Wahlund, J. E.; Ågren, K.; Morooka, M. W.; Modolo, R.; et al.; Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape; American Geophysical Union; Geophysical Research Letters; 37; L20105; 10-2010; 1-5
0094-8276
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1029/2010GL044544
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2010GL044544/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614445533233152
score 13.070432

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