TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL
In anticipation of improved observational data for Jupiter's gravitational field, from the Juno spacecraft, we predict the static tidal response for a variety of Jupiter interior models based on ab initio computer simulations of hydrogen-helium mixtures. We calculate hydrostatic-equilibrium gra...
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6220552017-01-23T03:00:34Z TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL Wahl, Sean M. Hubbard, William B. Militzer, Burkhard Univ Arizona, Lunar & Planetary Lab planets and satellites: fundamental parameters planets and satellites: gaseous planets planets and satellites: individual (Jupiter) planets and satellites: interiors In anticipation of improved observational data for Jupiter's gravitational field, from the Juno spacecraft, we predict the static tidal response for a variety of Jupiter interior models based on ab initio computer simulations of hydrogen-helium mixtures. We calculate hydrostatic-equilibrium gravity terms, using the non-perturbative concentric Maclaurin Spheroid method that eliminates lengthy expansions used in the theory of figures. Our method captures terms arising from the coupled tidal and rotational perturbations, which we find to be important for a rapidly rotating planet like Jupiter. Our predicted static tidal Love number, k(2) = 0.5900, is similar to 10% larger than previous estimates. The value is, as expected, highly correlated with the zonal harmonic coefficient J(2), and is thus nearly constant when plausible changes are made to the interior structure while holding J(2) fixed at the observed value. We note that the predicted static k(2) might change, due to Jupiter's dynamical response to the Galilean moons, and find reasons to argue that the change may be detectable-although we do not present here a theory of dynamical tides for highly oblate Jovian planets. An accurate model of Jupiter's tidal response will be essential for interpreting Juno observations and identifying tidal signals from effects of other interior dynamics of Jupiter's gravitational field. 2016-10-21 Article TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL 2016, 831 (1):14 The Astrophysical Journal 1538-4357 10.3847/0004-637X/831/1/14 http://hdl.handle.net/10150/622055 http://arizona.openrepository.com/arizona/handle/10150/622055 The Astrophysical Journal en http://stacks.iop.org/0004-637X/831/i=1/a=14?key=crossref.94e780e5342b88a796ca8fcc59534ff5 © 2016. The American Astronomical Society. All rights reserved. IOP PUBLISHING LTD |
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en |
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planets and satellites: fundamental parameters planets and satellites: gaseous planets planets and satellites: individual (Jupiter) planets and satellites: interiors |
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planets and satellites: fundamental parameters planets and satellites: gaseous planets planets and satellites: individual (Jupiter) planets and satellites: interiors Wahl, Sean M. Hubbard, William B. Militzer, Burkhard TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
description |
In anticipation of improved observational data for Jupiter's gravitational field, from the Juno spacecraft, we predict the static tidal response for a variety of Jupiter interior models based on ab initio computer simulations of hydrogen-helium mixtures. We calculate hydrostatic-equilibrium gravity terms, using the non-perturbative concentric Maclaurin Spheroid method that eliminates lengthy expansions used in the theory of figures. Our method captures terms arising from the coupled tidal and rotational perturbations, which we find to be important for a rapidly rotating planet like Jupiter. Our predicted static tidal Love number, k(2) = 0.5900, is similar to 10% larger than previous estimates. The value is, as expected, highly correlated with the zonal harmonic coefficient J(2), and is thus nearly constant when plausible changes are made to the interior structure while holding J(2) fixed at the observed value. We note that the predicted static k(2) might change, due to Jupiter's dynamical response to the Galilean moons, and find reasons to argue that the change may be detectable-although we do not present here a theory of dynamical tides for highly oblate Jovian planets. An accurate model of Jupiter's tidal response will be essential for interpreting Juno observations and identifying tidal signals from effects of other interior dynamics of Jupiter's gravitational field. |
author2 |
Univ Arizona, Lunar & Planetary Lab |
author_facet |
Univ Arizona, Lunar & Planetary Lab Wahl, Sean M. Hubbard, William B. Militzer, Burkhard |
author |
Wahl, Sean M. Hubbard, William B. Militzer, Burkhard |
author_sort |
Wahl, Sean M. |
title |
TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
title_short |
TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
title_full |
TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
title_fullStr |
TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
title_full_unstemmed |
TIDAL RESPONSE OF PRELIMINARY JUPITER MODEL |
title_sort |
tidal response of preliminary jupiter model |
publisher |
IOP PUBLISHING LTD |
publishDate |
2016 |
url |
http://hdl.handle.net/10150/622055 http://arizona.openrepository.com/arizona/handle/10150/622055 |
work_keys_str_mv |
AT wahlseanm tidalresponseofpreliminaryjupitermodel AT hubbardwilliamb tidalresponseofpreliminaryjupitermodel AT militzerburkhard tidalresponseofpreliminaryjupitermodel |
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1718410122518069248 |