Search: onr:"swepub:oai:DiVA.org:uu-161459" >
The importance of t...
The importance of thermal electron heating in Titan's ionosphere : Comparison with Cassini T34 flyby
-
Ma, Y. J. (author)
-
Russell, C. T. (author)
-
Nagy, A. F. (author)
-
show more...
-
Toth, G. (author)
-
Dougherty, M. K. (author)
-
Wellbrock, A. (author)
-
Coates, A. J. (author)
-
Garnier, P. (author)
-
- Wahlund, Jan-Erik (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
-
Cravens, T. E. (author)
-
Richard, M. S. (author)
-
Crary, F. J. (author)
-
show less...
-
(creator_code:org_t)
- 2011
- 2011
- English.
-
In: Journal of Geophysical Research. - 0148-0227 .- 2156-2202. ; 116, s. A10213-
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- We use a new magnetohydrodynamic (MHD) model to study the effects of thermal-electron heating in Titan's ionosphere. This model improves the previously used multispecies MHD model by solving both the electron and ion pressure equations instead of a single plasma pressure equation. This improvement enables a more accurate evaluation of ion and electron temperatures inside Titan's ionosphere. The model is first applied to an idealized case, and the results are compared in detail with those of the single-pressure MHD model to illustrate the effects of the improvement. Simulation results show that the dayside ionosphere thermal pressure is larger than the upstream pressure during normal conditions, when Titan is located in the dusk region; thus Saturn's magnetic field is shielded by the highly conducting ionosphere, similar to the interaction of Venus during solar maximum conditions. This model is also applied to a special flyby of Titan, the T34 flyby, which occurred near the dusk region. It is shown that better agreement with the magnetometer data can be achieved using the two-fluid MHD model with the inclusion of the effects of thermal electron heating. The model results clearly demonstrate the importance of thermal-electron heating in Titan's ionosphere.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Ma, Y. J.
-
Russell, C. T.
-
Nagy, A. F.
-
Toth, G.
-
Dougherty, M. K.
-
Wellbrock, A.
-
show more...
-
Coates, A. J.
-
Garnier, P.
-
Wahlund, Jan-Eri ...
-
Cravens, T. E.
-
Richard, M. S.
-
Crary, F. J.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Geophysics
- Articles in the publication
-
Journal of Geoph ...
- By the university
-
Uppsala University