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Titan's atomic hydrogen corona

hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorHEDELT, P.
dc.contributor.authorITO, Y.
dc.contributor.authorKELLER, H.U.
dc.contributor.authorREULKE, R.
hal.structure.identifierPhysikalisches Institut [Bern]
dc.contributor.authorWURZ, P.
hal.structure.identifierSpace Research Institute of Austrian Academy of Sciences [IWF]
dc.contributor.authorLAMMER, H.
hal.structure.identifierDLR Institute of Planetary Research
dc.contributor.authorRAUER, H.
hal.structure.identifierService de Néphrologie - Hypertension Artérielle Dialyse - Transplantation
dc.contributor.authorESPOSITO, L.
dc.date.issued2010
dc.identifier.issn0019-1035
dc.description.abstractEnBased on measurements performed by the Hydrogen Deuterium Absorption Cell (HDAC) aboard the Cas- sini orbiter, Titan's atomic hydrogen exosphere is investigated. Data obtained during the T9 encounter are used to infer the distribution of atomic hydrogen throughout Titan's exosphere, as well as the exospheric temperature. The measurements performed during the flyby are modeled by performing Monte Carlo radiative trans- fer calculations of solar Lyman-a radiation, which is resonantly scattered on atomic hydrogen in Titan's exosphere. Two different atomic hydrogen distribution models are applied to determine the best fitting density profile. One model is a static model that uses the Chamberlain formalism to calculate the distri- bution of atomic hydrogen throughout the exosphere, whereas the second model is a Particle model, which can also be applied to non-Maxwellian velocity distributions. The density distributions provided by both models are able to fit the measurements although both models differ at the exobase: best fitting exobase atomic hydrogen densities of nH = (1.5 ± 0.5)
dc.language.isoen
dc.publisherElsevier
dc.title.enTitan's atomic hydrogen corona
dc.typeArticle de revue
dc.identifier.doi10.1016/j.icarus.2010.06.012
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.journalIcarus
bordeaux.page424-435
bordeaux.volume210
bordeaux.peerReviewedoui
hal.identifierhal-00522944
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00522944v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Icarus&rft.date=2010&rft.volume=210&rft.spage=424-435&rft.epage=424-435&rft.eissn=0019-1035&rft.issn=0019-1035&rft.au=HEDELT,%20P.&ITO,%20Y.&KELLER,%20H.U.&REULKE,%20R.&WURZ,%20P.&rft.genre=article


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