Events

Events at Physics

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Events During the Week of October 24th through October 31st, 2021

Sunday, October 24th, 2021

Wonders of Physics
Lab Escape
Time: 10:00 am
Place: Ingersoll Physics Museum
Abstract: World-renowned quantum physicist Professor Alberta Pauline Schrödenberg desperately needs your help — the fate and security of the entire world (and more importantly, her funding!) hang in the balance. You’ll have to search her lab, solve mind-blowing puzzles to reveal clues, and hopefully find a way to complete your mission!

For more information, see our listing on the Wisconsin Science Festival website:
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Monday, October 25th, 2021

Plasma Physics (Physics/ECE/NE 922) Seminar
“Using magnetic fields and microgravity to explore the physics of dusty plasmas”
Time: 12:00 pm
Place:
Speaker: Ed Thomas, Jr. (Auburn)
Abstract: Over the last three decades, plasma scientists have learned how to control a new type of plasma

system known as a “complex” or “dusty” plasma. These are four-component plasma systems that

consist of electrons, ions, neutral atoms, and charged, solid, nanometer- to micrometer-sized

particles. The presence of these microparticles allow us to “tune” the plasma to have solid-like,

fluid-like, or gas-like properties. This means that dusty plasmas are not just a fourth state of matter

– they can take on the properties of all four states of matter.



From star-forming regions to planetary rings to fusion experiments, charged microparticles can be

found in many naturally occurring and man-made plasma systems. Therefore, understanding the

physics of dusty plasmas can provide new insights into a broad range of astrophysical and

technological problems. This presentation introduces the physical properties of dusty plasmas –

focusing on how the small charge-to-mass ratio of the charged microparticles gives rise to many

of the characteristics of the system. In particular, dusty plasmas can be used to study a variety of

processes in non-equilibrium or dissipative systems such as self-organization and energy cascade

as well as a variety of transport and instability mechanisms. This presentation will discuss results

from our studies of dusty plasmas in high (B ≥ 1 T) magnetic fields using the Magnetized Dusty

Plasma Experiment (MDPX) device at Auburn University and in microgravity experiments using

the Plasmakristall-4 (PK-4) laboratory on the International Space Station.
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Tuesday, October 26th, 2021

Network in Neutrinos, Nuclear Astrophysics, and Symmetries (N3AS) Seminar
Comparing Supernova Models Using Past and Future Neutrino Data
Time: 2:00 pm
Place:
Speaker: Jackson Olsen , University of Minnesota
Abstract: Recent advances in state-of-the-art core-collapse supernova (CCSN) simulations have led to detailed predictions for the neutrino signal. These model predictions can be directly compared using observations. In this talk, I describe a Bayesian comparison of three CCSN neutrino emission models using the Kamiokande II data on SN 1987A. I then present an analysis of the capabilities of a water Cherenkov detector such as Super-Kamiokande to distinguish between these models in the event of a future Galactic CCSN.
Host: Baha Balantekin
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Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 4:00 pm
Place: Chamberlin 5280
Speaker: Ryan Janish, Fermilab
Abstract: Note: This is a hybrid event. A zoom link will be distributed via the seminar mailing list. To join, email the organizer.
Host: Lars Aalsma
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Astronaut Scholarship Foundation presentation
Time: 5:00 pm
Place: 1003 Engineering Centers Building
Speaker: Brewster Shaw, NASA
Abstract: Astronaut Brewster Shaw will visit the University of Wisconsin to
share his experiences as a NASA astronaut and the impact of STEM
education during a lecture and scholarship presentation. UW–Madison mathematics and physics major Gage Siebert, one of the recipients of the Foundation's awards, will be recognized as well. This event
is open to the public.
Host: Tim Jensen, Engineering Physics
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Wednesday, October 27th, 2021

No events scheduled

Thursday, October 28th, 2021

Astronomy Colloquium
Probing Dynamic Intracluster Medium: Insights from X-ray Surface Brightness Fluctuations
Time: 3:30 pm
Place: 4421 Sterling Hall, Coffee and Cookies at 3:30 pm, Talk starts at 3:45 pm
Speaker: Irina Zhuravleva , University of Chicago
Abstract: Clusters of galaxies are mainly filled with dark matter and hot, X-ray emitting gas. They evolve through matter accretion along cosmic filaments, violent mergers, feedback from active galactic nuclei (AGN). Despite being very dynamic environments, the processes that drive gas motions in the intracluster medium (ICM), the properties of turbulence and relevant plasma physics remain poorly explored. In this talk, I will mainly focus on observational efforts to probe these physics. A recent analysis of X-ray surface brightness fluctuations in the central regions of bright, nearby galaxy clusters provided constraints on velocity power spectra, effective equation of state of small-scale perturbations produced by AGN feedback, and directly probed how magnetic fields modify small-scale density perturbations of the gas, affecting its transport properties. At the end of the talk, exciting possibilities to probe gas motions and plasma physics in the ICM with near-future XRISM observatory will be discussed.
We strongly encourage you to attend the colloquium in person. If that is impossible, it is available over zoom at the following link:
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Friday, October 29th, 2021

Graduate Introductory Seminar (Physics 701)
Atomic, molecular, and optical physics research overview
Time: 12:05 pm
Place: 2241 Chamberlin
Speaker: Shimon Kolkowitz, UW Madison Department of Physics
Host: Sridhara Dasu
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Physics Department Colloquium
TBD
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Nathalie de Leon, Princeton
Host: Shimon Kolkowitz
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