27–29 May 2026
60 St. George St.
America/Toronto timezone
CITA at 40: A Celebration of Cosmic Discovery

The densest stellar systems: the dynamics of galactic nuclei

Not scheduled
20m
McLennan Physical Laboratories (60 St. George St.)

McLennan Physical Laboratories

60 St. George St.

University of Toronto, St. George Campus
Oral

Speaker

Scott Tremaine (Institute for Advanced Study)

Description

Most galaxies contain supermassive black holes at their centers, surrounded by dense clusters of stars called galactic nuclei. Many exotic astrophysical phenomena arise within these clusters, including the tidal disruption of stars that pass close to the black hole, gravitational-wave bursts from stars spiraling into the black hole, and mergers of binary black holes. I will discuss the application of classical statistical mechanics to galactic nuclei, and present evidence that nuclei can exhibit a phase transition between a spherical disordered state and a lopsided ordered state.

Author

Scott Tremaine (Institute for Advanced Study)

Presentation materials

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