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Aug. 29 |
J. Craig Wheeler
University of Texas at Austin
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Organizational Meeting
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Sep. 5
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Labor Day Holiday
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Sep. 12 (Talk #1)
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J. Craig Wheeler
The University of Texas at Austin
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ASASSN 15lh, the brightest supernova ever or a tidal disruption event?
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Sep. 12 (Talk #2)
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Wenbin Lu
The University of Texas at Austin
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Fast Radio Bursts
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Sep. 19 (Talk #1)
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Paul Shapiro
The University of Texas at Austin
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Why Quasars (Still) Did Not Reionize the Universe
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Sep. 19 (Talk #2)
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Shingo Hirano
The University of Texas at Austin
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Various Paths of First Star Formation
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Sep. 26
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Milos Milosavljevic
The University of Texas at Austin
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Introduction to Structured Matrix Factorizations for Missing Data Imputation and Outlier Detection Under Selection Bias
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Oct. 3 (Talk #1)
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Mike Boylan-Kolchin
The University of Texas at Austin
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Substructure depletion in the inner Milky Way from disk shocking
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Oct. 3 (Talk #2)
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Bohua Li
The University of Texas at Austin
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Complex Scalar Field Dark Matter and the Gravitational Wave Background from Inflation: New Cosmological Constraints and Detectability
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Oct. 10
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Enea Di Dio
Observatory of Trieste
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Relativistic effects on galaxy power spectrum and bispectrum
abstract
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Oct. 17 (Talk #1)
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Volker Bromm
The University of Texas at Austin
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Supermassive black-hole seeds in the early universe
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Oct. 17 (Talk #2)
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Jason Jaacks
The University of Texas at Austin
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Uncovering Properties of the First Galaxies: Simulating the JWST Ultra Deep Fields Phase I
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Oct. 24 (Talk #1)
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Brian Mulligan
The University of Texas at Austin
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Deriving Abundances in a Radiation Dominated Supernova Atmosphere
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Oct. 24 (Talk #2)
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Aaron Smith
The University of Texas at Austin
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Lyman-alpha Radiation Hydrodynamics of Galactic Winds Before Cosmic Reionization
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Oct. 31
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Hirotaka Ito
Riken Research Institute
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Photospheric Emission from a Structured Jet
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Nov. 7 (Talk #1)
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Evan Schneider
University of Arizona
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Simulating Galactic Winds on Supercomputers Using Cholla
Galactic winds are a ubiquitous feature of rapidly star-forming galaxies. Observations have revealed these outflows to be complex, multiphase phenomena, with gas at a large range of densities and temperatures traveling at speeds from a few tens to more than 1000 kilometers per second. Describing how starburst-driven outflows originate, evolve, and affect the circumgalactic medium and gas supply of galaxies is an important challenge for theories of galaxy evolution. In this talk, I will discuss how we are using a new hydrodynamics code, Cholla, to improve our understanding of galactic winds. Cholla is a massively parallel, GPU-based code that I wrote to take advantage of the newest generation of supercomputers. With Cholla, we can perform large, three-dimensional simulations of multiphase outflows, allowing us to track the coupling of mass and momentum between gas phases across hundreds of parsecs at sub-parsec resolution. The results of our recent simulations demonstrate that the evolution of cool gas in galactic winds is highly dependent on the initial structure of embedded clouds. In particular, we find that turbulent density structures lead to more efficient mass transfer from cool to hot phases of the wind. I will discuss the implications of our results both for the incorporation of winds into cosmological simulations, and for interpretations of observed multiphase winds and the circumgalatic medium of nearby galaxies.
close
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Nov. 7 (Talk #2)
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Alex Fitts
The University of Texas at Austin
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Fire in the Field Part 2
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Nov. 14
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No talk scheduled
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(i.e. - Are you kidding? Tomorrow is the NSF deadline!) |
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Nov. 21
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John Scalo
The University of Texas at Austin
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Three Trans-computational Systems
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Nov. 28
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No talk scheduled
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Dec 5
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No talk scheduled
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Dec 12
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Caroline Straatman
Max Planck Institute for Astronomy
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The stellar mass Tully-Fisher relation for star-forming galaxies may have looked different at z~2, results from ZFIRE and outlook with LEGA-C
abstract
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