Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2330..559d&link_type=abstract
In JPL Uranus and Neptune p 559-572 (SEE N85-11927 02-91)
Physics
1
Brightness, Emission Spectra, Imaging Techniques, Iue, Lyman Alpha Radiation, Lyman Spectra, Image Processing, Monochromatization, Rayleigh Scattering, Uranus (Planet)
Scientific paper
The existence of intense and variable H Ly a emission from Uranus is demonstrated utilizing the monochromatic imaging capabilities of the International Ultraviolet Explorer satellite. A series of 14 observations, using the IUE short wavelength spectrograph in low dispersion and covering the period from 3 March 1982 through 2 September 1983, shows the disk averaged Ly a brightness of Uranus to vary between 690 and 2230 Rayleighs. Model calculations indicates that 400 R of this emission can be attributed to resonant scattering of solar Ly a radiation. An upper limit of 100 R is obtained for the Raman scattering of solar Ly a by H2 (1280 A). This implies that 300 R is contributed to the planetary Ly a emission by Rayleigh scattering. In addition to being unexpectedly strong, the Uranian Ly a emission has been observed to vary by a factor of two in one 24 hr period and by about 50% in one 5 hr period.
Clarke John T.
Durrance Samuel T.
No associations
LandOfFree
Lyman-Alpha aurora 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 Lyman-Alpha aurora, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lyman-Alpha aurora will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1229373