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Department of Physics and Astronomy

Nuclear, Astro and Particle Physics Seminars

These lectures feature speakers from around the country and globe. Each seminar lasts about an hour and takes a closer look at more specialized fields in various realms of physics and astronomy.

Many seminars will be held in a hybrid format and a recurring Zoom link is provided to access the virtual format.

The talks will be on Wednesdays at 4PM in the Rogers Room (Jones PSC 409).

Upcoming Seminar (Fall 2026):

The Turbulent Origin of Wide-Binary Eccentricities

Speaker: Dr. Siyao Xu
Affiliation: University of Florida
Date: September 30, 2026

Abstract:

Gaia observations have revealed a superthermal eccentricity distribution of wide binaries, departing from the thermal distribution proposed since Jeans (1919). The eccentricity distribution of wide binaries offers a unique probe of their formation in the turbulent interstellar medium. Turbulence determines the relative velocities of forming wide binaries, leaving a characteristic imprint on their eccentricity distribution. In this talk, I will present our theoretical and numerical studies of wide-binary formation in turbulence, and how the resulting eccentricity distributions can persist through subsequent star cluster evolution. I will discuss how these results can help us understand the observed  wide-binary eccentricities.

Seminar Series Fall 2026 schedule:

Date Speaker Affiliation Title
September 2, 2026 Steffen Strauch University of South Carolina Electrons, Muons, and the Proton radius: The MUSE Experiment at PSI
September 16, 2026 Evrim Gülser University of South Carolina Characterizing HRPPDs for use in the hpDIRC at EIC
September 30, 2026 Siyao Xu University of Florida The Turbulent Origin of Wide-Binary Eccentricities
October 7, 2026 Yuan Li University of Massachusetts Amherst TBA
October 14, 2026 Ahmed Shaban University of South Carolina TBA
October 21, 2026 TBD TBD TBA
October 28, 2026 Maximilian Horzela Georg-August-Universität Göttingen Toponium Production at the LHC

 

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