Dynamical Tides in Jupiter as Revealed by Juno

The Juno orbiter continues to collect data on Jupiter's gravity field with unprecedented precision since 2016, recently reporting a non-hydrostatic component in the tidal response of planet. At mid-mission perijove 17, registered Love number $k_2=0.565\pm0.006$ that is $-4\pm1\%$ ($1\sigma$) from theoretical hydrostatic $k_2^{(hs)}=0.590$. Here we assess whether aforementioned departure tides equilibrium represents neglected gravitational contribution dynamical tides. We employ perturbation theory and simple models calculate fractional correction $\Delta k_2$ well-known $k_2$. Exploiting analytical simplicity toy uniform-density model, show how Coriolis acceleration motivates negative sign observed by Juno. By simplifying interior into core-less, fully-convective, chemically-homogeneous body, model following an $n=1$ polytrope equation state. Our numerical results for qualitatively follow behaviour mostly because main flow similar each case. indicate effect Io-induced tide leads k_2=-4\pm1\%$, agreement reported Consequently, our suggest obtained first unambiguous detection gas giant These facilitate future interpretation purpose elucidating existence dilute core Jupiter.