COLLISION OF THE COMET SHOEMAKER-LEVY-9 WITH JUPITER - INTERPRETATIONOF OBSERVED DATA

Citation
Vk. Gryaznov et al., COLLISION OF THE COMET SHOEMAKER-LEVY-9 WITH JUPITER - INTERPRETATIONOF OBSERVED DATA, Earth, moon, and planets, 66(1), 1994, pp. 99-128
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Astronomy & Astrophysics","Geosciences, Interdisciplinary
Journal title
ISSN journal
0167-9295
Volume
66
Issue
1
Year of publication
1994
Pages
99 - 128
Database
ISI
SICI code
0167-9295(1994)66:1<99:COTCSW>2.0.ZU;2-Q
Abstract
In July 1994 the pieces of the Shoemaker-Levy 9 comet bombarded Jul,it er. A colossal energy mas released by braking of each comet fragment i n the Jovian atmosphere. In the paper we make an attempt to explain th e observing data were obtained during the collision of the comet with Jupiter. These are: the burst of radiation on the edge of the Jovian l imb during the braking of pieces of the comet in the atmosphere, anoma lies in the intensity of the radio frequency radiation of Jupiter in t he decameter and decimeter ranges, artificial polar glows in the upper atmosphere of Jupiter. formation and evolution of spots, which are co mparable in size with the Great Red Spot of Jupiter. The crucial issue s for interpreting the observed data is the depth of penetration of th e pieces into the atmosphere of Jupiter and the character of energy re lease during the braking of a particular fragment. We study the dynami cs of destruction and braking of a fragment of the Shoemaker-Levy come t in the atmosphere and then we use these results to interpret the obs erved data. If a fragment does not penetrate deep into the atmosphere, the nonhomogeneity of the Jovian atmosphere has a determining influen ce on the propagation of tile shock: wave caused by the explosion of t he piece. The upward motion of the shock wave, in the direction of dec reasing density, results in the shock wave acceleration. In addition a layer of heated highly-ionized gas is ejected in. the upper Jovian at mosphere, which in our opinion is responsible for a number of the obse rved phenomena in the ionosphere and magnetosphere of Jupiter. In part icular, from this standpoint we can explain the flashes of optical rad iation on the edge of the Jovian limb and variations in the intensity of decameter and decimeter radio frequency radiation of Jupiter, which were observed as the fragments entered the atmosphere.