Talks & Events

Workshops & Events Current & Future
Past EFI colloquium: Damiano Caprioli, "On the origin of the cosmic radiation  70 years later (a tribute for Fermi's pioneering paper of 1949)" A theory of the origin of cosmic radiation is proposed according to which cosmic rays are originated and accelerated primarily at the blast waves of supernova remnants and in relativistic jets of active galactic nuclei. One of the features of the theory is that it yields naturally a power law for the spectral distribution of the cosmic rays and explains in a straightforward way the heavy nuclei observed in the primary radiation. PSD colloquium: PierreLouis Lions, College de France, "Mean Field Games: What? Why? How?" Mathematics presents PierreLouis Lions, Professor, College de France PierreLouis Lions is one of the most well known mathematicians of our time. He graduated from the Ecole Normale Superieure in 1977, and received his doctorate from the University of Pierre and Marie Curie in 1979. His main work is on the theory of nonlinear partial differential equations. He received the Fields Medal (comparable to a Nobel Prize) for his work in 1994. Lions was the first to give a complete solution to the Boltzmann equation with proof. He has received numerous other awards. Currently, he holds the position of Professor of Partial differential equations and their applications at the prestigious College de France in Paris as well as a position at Ecole Polytechnique. In the paper "Viscosity solutions of HamiltonJacobi equations" (1983), written with Michael Crandall, he introduced the notion of viscosity solutions. This has had a great effect on the theory of partial differential equations. More recent work includes the theory of meanfield games, which promises to be highly influential in economics. PierreLouis Lions has also been interested for a long time in mathematical finance writing seminal papers on a variety of subjects, such as the use of Malliavin calculus, Monte Carlo methods, applications of stochastic control, and convexity properties. Physics colloquium: Marc Kamionkowski, Johns Hopkins University, "Heretical hypotheses in the hunt for dark matter" We have known for a reasonable fraction of a century that most of the matter in the Universe is dark, and for several decades that it cannot be baryonic. The nature of this dark matter has, however, been elusive. The prevailing weakly interacting massive particle (WIMP) hypothesis that have long been theorists preferred guess faces considerable pressure from an array of null searches, and this has led theorists to consider previously unpalatable alternatives. I will discuss the rise, and possible fall, of an idea that connected LIGOs discovery of blackhole binaries to dark matter. I will also discuss recent ideas (motivated in part by an intriguing recent experimental result) that involve particles with enhanced couplings to ordinary matter. Midwest Workshop on Supernovae and Transients Website The purpose of the workshop is to bring together the Midwest community interested in supernovae of all types, and Galactic and extragalactic transients in general, including kilonovae, fast radio bursts, TDEs, gammaray bursts, novae, Xray binaries, and anything that varies on a short timescale. We will deal with all aspects of these objects, including the explosion mechanism, progenitors, evolution, nucleosynthesis, and radiation over all wavelengths from radio to gammarays. Ample time would be given to students and postdocs, and significant time reserved for discussions. The workshop is organized by the Department of Astronomy and Astrophysics at the University of Chicago. Broader Horizons: Stephen Hoover, Civis Analytics Organizer: Andrew Neil Interested in a career in data science? What does a data scientist do, exactly, and how does a physicist or astronomer become a data scientist? Stephen is a data scientist at the Chicagobased company Civis Analytics, where he helps to build predictive modeling tools for Civis's software offerings and consulting work. He received his PhD in physics from UCLA, and went on to work with the South Pole Telescope group as a postdoc. He joined Civis Analytics in 2014, and in this talk, will discuss his transition from academia and the current nature of a data scientist's job. Winter 2019 Postdocs Symposium
Sara Seager, "Exoplanets and the Search for Habitable Worlds" Sara Seager, 2019 Brinson Lecturer Sara Seager is an astrophysicist and planetary scientist at MIT. Her science research focuses on theory, computation, and data analysis of exoplanets. Her research has introduced many new ideas to the field of exoplanet characterization, including work that led to the first detection of an exoplanet atmosphere. She received her Ph.D from Harvard University in 1999. Before joining MIT in 2007, Professor Seager spent four years on the senior research staff at the Carnegie Institution of Washington preceded by three years at the Institute for Advanced Study in Princeton, NJ. Professor Seager is on the advisory board for Planetary Resources. Professor Seager was elected to the National Academy of Sciences in 2015, is a 2013 MacArthur Fellow, the 2012 recipient of the Raymond and Beverly Sackler Prize in the Physical Sciences, and the 2007 recipient of the American Astronomical Society's Helen B. Warner Prize. She has been recognized in the media, most recently in Time Magazine's 25 Most Influential in Space in 2012. 2019 Brinson Lecture: "Exoplanets and the Search for Habitable Worlds" For thousands of years people have wondered, "Are there planets like Earth?" "Are such planets common?" "Do any have signs of life?" Today astronomers are poised to answer these ancient questions, having recently found thousands of planets that orbit nearby Sunlike stars, called "exoplanets". Professor Sara Seager will share the latest advances in this revolutionary field. This event is cosponsored by the University of Chicago and the School of the Art Institute of Chicago. Workshop: "Astrophysics with the CMBS4 Survey" Website The purpose of the workshop is to bring together leading astronomers and astrophysicists to integrate the planned CMBS4 Legacy Survey, a multiband millimeter wave survey covering roughly half the sky at unprecedented sensitivity and observing cadence, with other directions in astrophysics. This includes the time variable sky as seen in solar system science, stellar variability, binary evolution, supernovae, tidal disruption events, and gammaray bursts, as well as highredshift star formation and studies of feedback from black holes and star formation on the intergalactic medium, including galaxy cluster thermodynamics and reionization. LSST Dark Matter Workshop Website Dark matter constitutes roughly 85% of the matter density of the Universe, and represents a critical gap in our understanding of fundamental physics. Despite extensive experimental efforts, the only robust, positive empirical measurement of dark matter continues to come from cosmological and astrophysical observations. The Large Synoptic Survey Telescope (LSST) offers a versatile platform to investigate dark matter. This workshop will focus on new ideas for probing the fundamental nature of dark matter with LSST and other future observations. Potential discussion topics for this workshop Include:  Warm and selfinteracting particle dark matter  Compact objects  Ultralight and fuzzy dark matter  Nearfield cosmology  Gravitational lensing (weak, strong, and micro)  Galaxy clusters  Large scale structure SCAM2019: SNIaCosmology Analysis Meeting Website The era of large photometrically identified samples of Type Ia Supernovae (SNIa) has begun, opening the door to a variety of cosmological probes. This workshop will focus on analysis methods being applied to current data sets (e.g., CfA, CSP, DES, Foundation, PS1, SDSS, SNf, SNLS) and new methods anticipated for future data sets (e.g., LSST, WFIRST). We will discuss how current methods need to evolve for the challenge of much larger SNIa samples, and also discuss the challenges of developing new analysis methods. This meeting will include presentations with significant discussion time. We have limited travel support for early career scientists. Conference: Cosmic Controversies Website Are we close to a fundamental cosmological paradigm, or is a major disruption imminent? Is cosmology on the verge of a fundamental description of the Universe from a tiny fraction of a second after the big bang until today based upon LCDM, or is it on the cusp of major disruption and reorganization of our understanding of the Universe? Eight cosmic controversies  the value(s) the Hubble constant, viability of CDM, cause of cosmic acceleration, validity of inflation, the existence of a dark matter particle, clarity about the multiverse, origin of ordinary matter, and other loose ends in the paradigm  have much to say about the direction cosmology will take in the next decade and may the answer the question above. Our cosmology conclave will focus on these controversies and address how best to resolve them. The controversies
... and what tools are critical for making progress in cosmology in the coming decades? Conference Format Eight, 90minute afternoon panels featuring a moderator/chair and 3 speakers. Fortysome 25minute invited morning talks that inform the panels, and contributed posters. Evenings include a public event, a banquet and a poster session reception. 