A search for Planet 9 in the IRAS data

ResearchGate ^ | November 2021 | Michael Rowan-Robinson

[SunkenCiv]

Abstract: Recent analyses have shown that the concluding stages of giant planet formation are accompanied by the development of large-scale meridional flow of gas inside the planetary Hill sphere. This circulation feeds a circumplanetary disk that viscously expels gaseous material back into the parent nebula, maintaining the system in a quasi-steady state. Here we investigate the formation of natural satellites of Jupiter and Saturn within the framework of this newly outlined picture. We begin by considering the long-term evolution of solid material, and demonstrate that the circumplanetary disk can act as a global dust trap, where s ~ 0.1-10 mm grains achieve a hydrodynamical equilibrium, facilitated by a balance between radial updraft and aerodynamic drag. This process leads to a gradual increase in the system's metallicity, and eventually culminates in the gravitational fragmentation of the outer regions of the solid sub-disk into R ~ 100 km satellitesimals. Subsequently, satellite conglomeration ensues via pairwise collisions, but is terminated when disk-driven orbital migration removes the growing objects from the satellitesimal feeding zone. The resulting satellite formation cycle can repeat multiple times, until it is brought to an end by photo-evaporation of the parent nebula. Numerical simulations of the envisioned formation scenario yield satisfactory agreement between our model and the known properties of the Jovian and Saturnian moons.

"Update on Planet 9:Formation of Giant Planet Satellites" Konstantin Batygin (Caltech) | February 23, 2021 | Brown University Department of Physics [1:04:06]

[SunkenCiv]

As you noted, his recap was brief.

https://mathshistory.st-andrews.ac.uk/Biographies/Adams/

Born 5 June 1819
Lidcott, near Launceston, Cornwall, England

Died 21 January 1892
Cambridge, England

Summary

John Couch Adams was an astronomer and mathematician who was the first person to predict the position of a planet beyond Uranus.