Physics & Astronomy Astro Seminar

Title: Using the Metallicity of Simulated Galaxies to Understand Galaxy Evolution

Abstract: Numerical simulations are an invaluable tool for understanding how galaxies form and evolve. Yet, the current generation of simulations suffers from significant modeling uncertainties, rooted in divergent predictions from different codes using similar prescriptions and in a lack systematic comparisons between qualitatively different models. In this talk, I will highlight the oftentimes underappreciated differences between popular cosmological simulations (e.g., IllustrisTNG, EAGLE, FIRE) through examining their metal content. Metals serve as powerful observational tracers of the galactic baryon cycle and are highly sensitive to the details of feedback physics. I will show that even for nominally similar simulation models (e.g., IllustrisTNG and EAGLE), the overall metal budget of the galaxy can be significantly different. Moreover, distinct physical implementations (e.g., IllustrisTNG and FIRE) make very different predictions for the spatial distribution of metals within galaxies. Together, these predictions provide a theoretical framework through which we can leverage the wealth of observational data on metals to gain deeper insight into the processes driving galaxy evolution.

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CP 303
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Arts and Sciences Distinguished Faculty Awards 2025

Visiting Writers Series: Alumni Reading feat. Erika Simpson, Allegra Solomon, and Alfonso Zapata

Erika J. Simpson holds an MFA ('21) in creative writing from the University of Kentucky and is the recipient of the 2021 UK MFA Award in Nonfiction. Her essay, “If You Ever Find Yourself,” was published in Roxane Gay’s The Audacity and featured in Best American Essays 2022, edited by Alexander Chee. This Is Your Mother is her debut memoir, and she also writes fiction for the page and screen.
 
Allegra Solomon received her MFA ('22) from the University of Kentucky. Her debut short story collection, There’s Nothing Left for You Here, won the Kimbilio National Fiction prize. Her work has been nominated for the Pushcart Prize, Best of the Net, and has appeared in The Georgia Review, TriQuarterly, American Literary Review, New Ohio Review, Lolwe, and more.
 
Alfonso Zapata received his MFA ('23) in poetry at the University of Kentucky. He is the recipient of the Jim Lawless IV Poetry Prize and the 2022 & 2023 UK MFA Poetry Awards. His work has appeared in Sho Poetry Journal, and he is the author of the chapbook, Together Now (Belle Point Press, 2024). His first full-length book, To Pay for Our Next Breath, won the TRP Southern Poetry Breakthrough Prize.
Date:
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Cornerstone - Esports Theater, 401 S Limestone, Lexington, KY 40508

Simulations of Gauge Theories on Quantum Computers

Gauge theories describe the fundamental interactions, but their complexity makes questions involving real-time dynamics beyond the reach of classical computation. Quantum computers open a new path by naturally representing quantum fields and evolving them in real time thus circumventing for example the sign problem that limits classical Monte Carlo methods. In this talk, we will discuss the challenges and recent progress in encoding and simulating Gauge theories on fault-tolerant quantum computers.

Date:
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Location:
CP 303
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Physics & Astronomy Astro Seminar

Title: Better Together: Combining the Strengths of Rubin, LS4 and Euclid for Time-domain Science and Cosmology

Abstract: We have entered an exciting decade for survey science with such space-based surveys as Euclid and such ground-based surveys as LSST and LS4 providing overlapping imaging datasets across the optical and IR.  LSST will identify thousands of tidal disruption events (TDEs) and millions of AGN and supernovae, including hundreds of gravitationally lensed supernovae (gLSNe) from which we can measure the Hubble Constant. I will discuss how joint analysis of ground and space-based data via multi-resolution forward modeling methods will enable us to search for TDEs from non-nuclear massive black holes, undertake time delay cosmography with populations of gLSNe and study the environments of supernovae and dwarf galaxy AGN.

Date:
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Location:
CP 303
Event Series:

Ellen D.B. Riggle receives Graduate School's Kirwan Memorial Prize

By Harper Propst 

LEXINGTON, Ky. (June 12, 2025) — Each year, the University of Kentucky Graduate School recognizes exceptional faculty for their achievements in graduate education and scholarly research. Ellen D.B. Riggle, Ph.D, receives the Albert D. and Elizabeth H. Kirwan Memorial Prize, awarded for outstanding contributions to original research and scholarship.

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