Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons

Details Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3602202g&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 2, CiteID L02202

Physics

14

Planetary Sciences: Solar System Objects: Saturn, Planetary Sciences: Fluid Planets: Aurorae, Planetary Sciences: Fluid Planets: Atmospheres (0343, 1060), Planetary Sciences: Fluid Planets: Magnetospheres (2756), Magnetospheric Physics: Energetic Particles: Precipitating

Scientific paper

Images of Saturn's aurora at the limb have been collected with the Advanced Camera for Surveys on board the Hubble Space Telescope. They show that the peak of Saturn's nightside emission is generally located 900-1300 km above the 1-bar level. On the other hand, methane and H2 columns overlying the aurora have been determined from the analysis of FUV and EUV spectra, respectively. Using a low-latitude model, these columns place the emission layer at or above 610 km. One possibility to solve this apparent discrepancy between imaging and spectral observations is to assume that the thermospheric temperature in the auroral region sharply increases at a higher pressure level than in the low-latitude regions. Using an electron transport code, we estimate the characteristic energy of the precipitated electrons derived from these observations to be in the range 1-5 keV using a low latitude model and 5-30 keV in case of the modified model.

Affiliated with

Also associated with

No associations

Rating

Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons 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 Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Altitude of Saturn's aurora and its implications for the characteristic energy of precipitated electrons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1808153