Space Ultraviolet Spectroscopy and Imaging of Jupiter

Details Space Ultraviolet Spectroscopy and Imaging of Jupiter Space Ultraviolet Spectroscopy and Imaging of Jupiter

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phdt........13m&link_type=abstract

Thesis (PHD). THE JOHNS HOPKINS UNIVERSITY , Source DAI-B 58/04, p. 1925, Oct 1997, 161 pages.

Computer Science

Sound

Hopkins Ultraviolet Telescope, Hubble Space Telescope

Scientific paper

We have observed Jupiter in the ultraviolet band of wavelengths from 850-1850 A using the Hopkins Ultraviolet Telescope, the Hubble Space Telescope, and a sounding rocket experiment. These measurements comprise moderate-resolution equatorial and north polar spectra and images that probe the stratosphere of Jupiter. We have determined that the abundances of acetylene, ethane and ethylene were 39 ± 3 ppb, 3 ± 1 ppm and <0.4 ppb respectively in 1990, and 28 ± 3 ppb, 3 ± 1 ppm and 0.4 ± 0.2 ppb in 1995. The integrated (1450-1850 A) contribution of the H2 dayglow was 800 ± 400 Rayleighs in 1990 and <400 Rayleighs in 1995, which was a period spanning solar maximum and solar minimum. The polar data have shown the molecular hydrogen aurora to extend over 4.5±0.5×10-10 sr with an average brightness of 106 ± 12 kR integrated over the band of wavelengths from 900 to 1650 A, excluding Lyα. We measure a 13% larger emitting area (5.1±0.5×10-10 sr) and significantly different morphology for the combined atomic and molecular hydrogen aurora (Lyα + H2), although these differences could be due to time variability. Color ratios derived from the data indicate a total auroral energy deposition rate of 13 ergs s-1/ cm-2 by 3-30 keV electrons. The sounding rocket development program has involved parallel studies of CCD detectors and ultraviolet spectrographs. These studies have included characterization of front and back-illuminated UV-sensitive CCDs with average quantum efficiencies of 18% and 40%, respectively, and the development of an aberrationless LiF prism spectrograph for imaging of UV astronomical targets.

Affiliated with

Also associated with

No associations

Rating

Space Ultraviolet Spectroscopy and Imaging of Jupiter 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 Space Ultraviolet Spectroscopy and Imaging of Jupiter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Space Ultraviolet Spectroscopy and Imaging of Jupiter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1157780