Jan 26, 2017 4:00 pm - Nielsen Hall 170 - Colloquium
Billy Quarles - OU
Instabilities in the Early Solar System due to a Self-gravitating Disk

The early Solar System has experienced episodes of dramatic change in terms of its architecture.  Of which, Jupiter and Saturn are expected to undergo an instability within the first billion years to explain features within the inner and outer Solar System.  Specific features include the cratering record on the Moon representative of a `Late Heavy Bombardment’ and the dynamical architecture of the Trans-Neptunian objects.  Previous studies of the so-called 'Nice model' have applied approximations concerning the interactions between the small bodies of the outer planetesimal disk, where we use a fully interacting outer disk.  The history of the 'Nice model' has also changed dramatically through variations in the timing and mass conditions for this instability that can include up to six giant planets.  Insights into the dynamics of the early Solar System using a large ensemble of numerical simulations of this giant planet instability will be discussed.  Our simulations indicate that a delayed scattering event does not typically occur on the correct timescale to be attributed to a `Late Heavy Bombardment’ and such an event was more likely to have occurred relatively early within Solar System history.




Aug 24, 2017 4:00 pm

Nielsen Hall 170 - No colloquium - 1st week of classes


Sep 07, 2017 4:00 pm

Nielsen Hall 170 - John Wisniewski


Sep 28, 2017 4:00 pm

Nielsen Hall 170 - Alberto Marino