We knew that Saturn had no solid surface, but this is ridiculous! Ring seismology shows us just how fuzzed out Saturn's core actually is, in our paper out today in @NatureAstronomy.
https://t.co/ybh2TDHsxf via @NatGeo
@smallplanets@NatureAstronomy@NatGeo@nadiamdrake@SquigglyVolcano If it is a relic, then overall strength of dissipation might not have changed much. But if the resonance locking idea from my esteemed co-author Jim Fuller are right, Saturn's evolution makes the tidal evolution nontrivial! The inertial/gravity modes evolve with the planet.
We knew that Saturn had no solid surface, but this is ridiculous! Ring seismology shows us just how fuzzed out Saturn's core actually is, in our paper out today in @NatureAstronomy.
https://t.co/ybh2TDHsxf via @NatGeo
Saturn's rings as a seismograph to look at the planet's interior: latest results reveal that Saturn's core, like Jupiter's, is dilute. It is also convectively stable and contains 17 Earth masses of ice and rock. Mankovich (@chkvch) & Fuller: https://t.co/aoeSc641zy
Thanks old friend! And thanks as always for putting it out there on this funny website, not my strong suit.
Taking suggestions for picking up the g modes in Jupiter, because they are there. Every week or so I still ponder @njgoldbaum's idea to create rings by blowing up Ganymede
Looks awesome, @chkvch!
To repeat: Saturn's rings are the solar system's most sensitive seismograph!
"A diffuse core in Saturn revealed by ring seismology"
https://t.co/XADtpkOVB2
@Magrathea_staff @exoZafar Not what we're used to when we think about giant planet cores, right? When you start diluting with hydrogen, things get very squishy very fast.
Looks awesome, @chkvch!
To repeat: Saturn's rings are the solar system's most sensitive seismograph!
"A diffuse core in Saturn revealed by ring seismology"
https://t.co/XADtpkOVB2
The next Exoplanet/Solar System synergy talk will be about the fuzzy cores of Solar System gas giant planets. Ravit Helled and Chris Mankovich will be discussing on 1/28 at 11AM PDT. Not our usual date, but postponing for AAS.
I don't! Maybe @theAGU can comment, but in the meantime the kind folks at [email protected] will help you if you're looking for something in particular.
@philip_armitage Wasn't easy to track down - I saw this circa 2014 in a talk by @astromarkmarley and had to go digging through the digitized tome of 1982 abstracts to find it, so, it's out there. Digitization of abstracts from the before time is ongoing so the online record is spotty.
@philip_armitage Bumping this from way back because I missed it: for posterity, here is the "article" (actually an AGU Fall meeting abstract) in its entirety. The conception of Kronoseismology:
If you haven't already, check out talk 513.06 by French+. They report a crazy 10 additional density waves in Saturn's C-ring that are produced by oscillation modes of the planet. Symbols are the 31 now observed modes. Dots are predictions by @chkvch+ in our 2019 paper.
Damn, the college at my university really wrote a press release about my Price award but blurred out the text ‘ I can’t breathe’ on one of the images I provided without my permission before publishing it.
Four years ago to the day I moved to East Lansing to start my PhD. Today I will board a plane to move back to Arizona and finish my PhD remotely being sponsored as an affiliate at ASU. I want to share why: