Dynamic Plasma Interaction at Io: Multispecies Hybrid Simulations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F19%3A00501722" target="_blank" >RIV/68378289:_____/19:00501722 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1029/2018JA026153" target="_blank" >http://dx.doi.org/10.1029/2018JA026153</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2018JA026153" target="_blank" >10.1029/2018JA026153</a>
Alternative languages
Result language
angličtina
Original language name
Dynamic Plasma Interaction at Io: Multispecies Hybrid Simulations
Original language description
The interaction between the Io plasma torus and Io exhibits significant dynamics resulting from temporal variations of both external conditions in the plasma torus and local conditions in Io's environment. We present analysis of an extensive simulation campaign of the Io plasma interaction under varying interaction conditions performed by using a hybrid multispecies simulation model. We test two models of electron impact ionization, one resulting in plasma production constrained to the upstream hemisphere of Io and the other producing a more symmetric distribution of the plasma with nonnegligible plasma production on the downstream side of Io. In the latter case, the simulation model provides high level of agreement with Galileo measurements of magnetic field obtained during the I0 flyby, where the model captures even smaller-scale features of the magnetic field profile. Our simulated results provide strong support for the existence of Io's induced dipole field. In this model we assume that induced dipole field moment is antiparallel to the direction of the inducing magnetic field, equivalent to induction in a highly conductive Io. Our results further support the idea that Io's atmosphere collapsed during the Galileo I27 flyby, which manifests itself in the lack of ion heating due to pickup processes in the extended atmosphere. Our results show that the dominant torus species, O+ and S++, are depleted around Io and may exhibit temperature anisotropy, T⊥/T‖ < 1, resulting from merging of ion populations coming from opposite sides of Io along the magnetic field. ©2019. American Geophysical Union. All Rights Reserved.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA17-08857S" target="_blank" >GA17-08857S: Plasma Interactions at Jovian Icy Moons</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Geophysical Research: Space Physics
ISSN
2169-9380
e-ISSN
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Volume of the periodical
124
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
29
Pages from-to
313-341
UT code for WoS article
000458729500020
EID of the result in the Scopus database
2-s2.0-85060578540