Events Daily

Tuesday, February 21, 2023

Astro Journal Club
Event Type: Other
Time: 12:30 PM - 1:30 PM
Location: 726 Broadway, 940, CCPP Seminar

Stream Fanning and Bifurcations: Observing Fundamental Dynamics in Stellar Stream Morphology
Tomer Yavetz, Institute for Advanced Studies
Event Type: Astro Seminar
Time: 2:00 PM - 3:00 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: Non-spherical gravitational potentials host a subset of resonantly-trapped orbit families surrounding special, closed orbits. The transitions between these orbit families, or separatrices, mark abrupt discontinuities in the orbital structure of the potential. I will show how the morphology of stellar streams can be used to identify and locate these separatrices, and discuss a few examples of observed streams with peculiar morphologies that may indicate the existence of a nearby dynamical resonance.

Link to the Event Video