Acoustic oscillations of Jupiter

Umin Lee

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

We calculate low-degree l acoustic (p-mode) oscillations of the giant planet Jupiter. We use two Jupiter models, both of which contain a rocky core, an ice mantle, and a hydrogen-rich envelope. One of the models incorporates the "plasma phase transition" (PPT) of hydrogen, a first-order phase transition that yields a density discontinuity in the hydrogen-rich envelope. Our calculations of the acoustic oscillation spectrum of Jupiter have taken account of the effects of the rapid rotation of the planet: the Coriolis force, centrifugal force, and deformation of the equilibrium state. The p-mode frequency spectra of the Jupiter models are summarized in several echelle diagrams. We show that the frequency spectra of the low-degree p-modes are strongly affected by the existence of the rocky core and by avoided crossings among high radial-order p-modes with different l's. Near the avoided crossings, these modes have mixed characteristics, simultaneously including features of p-modes with different l-values. We also discuss "discontinuity modes," which are produced by the density discontinuities between the rock core, ice mantle, and hydrogen-rich envelope. Low-degree discontinuity modes have frequencies lying between the radial fundamental and the radial first-overtone modes.

Original languageEnglish
Pages (from-to)359-374
Number of pages16
JournalAstrophysical Journal
Volume405
Issue number1
DOIs
Publication statusPublished - 1993 Mar 1
Externally publishedYes

Keywords

  • Planets and satellites: individual (Jupiter)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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