Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations

Details Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgra..11400b30m&link_type=abstract

Journal of Geophysical Research, Volume 114, Issue A12, CiteID E00B30

Physics

6

Planetary Sciences: Solar System Objects: Venus, Planetary Sciences: Solid Surface Planets: Interactions With Particles And Fields, Magnetospheric Physics: Solar Wind Interactions With Unmagnetized Bodies

Scientific paper

We use data of the ASPERA-4 ion and electron spectrometers onboard Venus Express to determine the locations and shapes of the plasma boundaries (bow shock, ion composition boundary, and mantle) at Venus. We also investigate the variation of the terminator bow shock position as a function of the solar wind dynamic pressure and solar EUV flux. We compare the results with a 3-D hybrid simulation. In the hybrid model, ions are treated as individual particles moving in self-consistently generated electromagnetic fields and electrons are modeled as a massless charge neutralizing fluid. The planetary heavy ion plasma is generated by an oxygen ionosphere and exosphere adapted to a profile, which depends on the solar zenith angle (Chapman layer). A comparison between observations and simulations indicates that the hybrid model is able to produce an adequate picture of the global plasma environment at Venus. The positions of the plasma boundaries are well reproduced by the model but a significant disagreement appears in the absolute values of the considered parameters.

Affiliated with

Also associated with

No associations

Rating

Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma environment of Venus: Comparison of Venus Express ASPERA-4 measurements with 3-D hybrid simulations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1264286