Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment

Details Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.2119p&link_type=abstract

American Astronomical Society, DPS meeting #28, #21.19; Bulletin of the American Astronomical Society, Vol. 28, p.1137

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Early Jupiter atmosphere results from the EUV (54--128 nm) and UVS (113--432 nm) spectrometers on Galileo will be presented. The EUV instrument is mounted on the spun section of the orbiter, while the UVS is on the scan platform. Data already returned from the Ganymede-1 (G1) orbit contains less background radiation noise than expected. An EUV spin-scan image at 90deg phase shows the polar auroras and Lyman-alpha dayglow. Simultaneous UVS southern aurora spectra were obtained. A full rotation UVS dark side observation of the north aurora on day 176 shows an emission maximum near 184deg longitude. The spectrum resembles a UVS lab spectrum of 100-eV electrons striking H_2 gas. Methane absorption is evident at short wavelengths, indicating a CH_4 slant penetration depth of ~ 2 x 10(16) /cm(2) . A UVS slew (day 176/00:17-00:50) across the southern auroral zone from midnight to noon shows a two-peaked spatial structure in the H_2 band emissions that is visible at the same longitudes in an HST WFPC-2 H_2 band image (176/03:54) with dawn-to-dusk geometry. Dayside UVS observations obtained on and off the Great Red Spot show H_2 emissions, and absorptions due to aerosols, C_2H_2, C_2H_6, C_2H_4, and NH_3. We will report on the spatial variations in the absorbers. Plans for the upcoming Ganymede-2 (G2) orbit include (1) a UVS full rotation observation of the southern aurora, and (2) a UVS north-south slew with the slit aligned east-west for latitude studies of aerosols, hydrocarbons, and ammonia.

Affiliated with

Also associated with

No associations

Rating

Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment 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 Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initial Jupiter Atmosphere Results from the Galileo Ultraviolet Spectrometer Experiment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1462053