Computer Science – Sound
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..593m&link_type=abstract
In ESA, Seismology of the Sun and Sun-Like Stars p 593-594 (SEE N89-25819 19-92)
Computer Science
Sound
6
Jupiter (Planet), Jupiter Atmosphere, Oscillations, Planetary Structure, Planetology, Ray Tracing, Signature Analysis
Scientific paper
The internal structure of Jupiter is discussed. According to models the planet exhibits two discontinuities of sound speed in the interior. The first one located in the external part of the hydrogen-helium atmosphere corresponds to the transition of molecular to metallic hydrogen, while the second one to the transition between the H-He envelope and the high density core. Ray tracing of acoustic modes was used to predict the behavior of expected pressure modes of Jupiter. Due to the inner discontinuity, the regular spacing between frequencies of adjacent models is broken in a characteristic manner which provides a clear signature. Observations of low degree p-modes, achievable from the ground, would accurately provide the value of the radius of the planetary core. Observations of high degree modes would provide a signature of the external transition.
Delache Philippe
Gautier Daniel
Mosser Benoit
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