2013
DOI: 10.1002/2013ja019029
|View full text |Cite
|
Sign up to set email alerts
|

Solar wind‐driven plasma fluxes from the Venus ionosphere

Abstract: [1] Measurements conducted with the ASPERA-4 instrument and the magnetometer of the Venus Express spacecraft show that the kinetic pressure of planetary O + ion fluxes measured in the Venus wake can be significantly larger than the local magnetic pressure, and as a result, those ions are not solely being driven by magnetic forces but also by the kinetic energy of the solar wind. Beams of planetary O + ions with those properties have been detected in several orbits of the Venus Express through the Venus wake as… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

1
8
0

Year Published

2015
2015
2023
2023

Publication Types

Select...
4
1

Relationship

0
5

Authors

Journals

citations
Cited by 7 publications
(9 citation statements)
references
References 28 publications
(40 reference statements)
1
8
0
Order By: Relevance
“…Specifically, Chaufray et al [] considered an ionospheric plasma flow driven by collisional coupling to the neutral winds and diurnal pressure gradient. Such a scheme is not able to reproduce the observed depletion of nightside TEC on Mars, indicating that an important mechanism is missing in their model, presumably momentum transfer from the SW [e.g., Pérez‐de‐Tejada , ; Pérez‐de‐Tejada et al , ]. However, the MHD calculations of Ma et al [], which did take into account both pressure gradient and momentum transfer via the SW convective electric fields, predicted a day‐to‐night transport rate of only several 10 24 s −1 , about an order of magnitude lower than our result.…”
Section: Comparison With Existing Results and Implicationsmentioning
confidence: 99%
See 2 more Smart Citations
“…Specifically, Chaufray et al [] considered an ionospheric plasma flow driven by collisional coupling to the neutral winds and diurnal pressure gradient. Such a scheme is not able to reproduce the observed depletion of nightside TEC on Mars, indicating that an important mechanism is missing in their model, presumably momentum transfer from the SW [e.g., Pérez‐de‐Tejada , ; Pérez‐de‐Tejada et al , ]. However, the MHD calculations of Ma et al [], which did take into account both pressure gradient and momentum transfer via the SW convective electric fields, predicted a day‐to‐night transport rate of only several 10 24 s −1 , about an order of magnitude lower than our result.…”
Section: Comparison With Existing Results and Implicationsmentioning
confidence: 99%
“…Specifically, Chaufray et al [2014] considered an ionospheric plasma flow driven by collisional coupling to the neutral winds and diurnal pressure gradient. Such a scheme is not able to reproduce the observed depletion of nightside TEC on Mars, indicating that an important mechanism is missing in their model, presumably momentum transfer from the SW [e.g., Pérez-de-Tejada, 1998;Pérez-de-Tejada et al, 2013]. However, the MHD calculations of Ma et al [2004], which did take into CUI ET AL.…”
Section: Comparison With Existing Results and Implicationsmentioning
confidence: 99%
See 1 more Smart Citation
“…It is currently accepted that magnetic forces are sufficient to drive planetary ions away from the Venus wake. From measurements conducted with the Venus Express spacecraft it has been found, however, that conditions in the wake show the opposite since the motion of the plasma particles is super-Alfvenic [6]; namely, their kinetic energy density is larger than the local magnetic energy density. An example of this behavior is shown in Figure 3 where the energy spectra of the solar wind and those of the O+ planetary ions measured in orbit 123 of the Venus Express are shown in the top panels.…”
Section: Magnetic and Kinetic Forcesmentioning
confidence: 99%
“…This constraint provides an explanation for the absence Figure 4. (Lower panel) Kinetic pressure of the O+ ions (profiles marked in red) and the H+ ions, together with the profile of the magnetic field pressure measured through the Venus wake during orbit 123 of the Venus Express spacecraft [6]. (Upper panel) Ratio values of the total kinetic pressure of the plasma to the magnetic field pressure derived from the profiles shown in the lower panel.…”
Section: Magnetic and Kinetic Forcesmentioning
confidence: 99%