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<< Week of September 17 >>

Monday, September 15, 2014

TAC Seminar

Seminar: TAC Seminars | September 15 | 12-1 p.m. | B1 Hearst Field Annex

Jeffrey Fung, University of Toronto

Department of Astronomy

Tuesday, September 16, 2014

Lessons in Near-Field Cosmology from Simulating the Local Group

Seminar: Cosmology Seminars | September 16 | 1:10 p.m. | B1 Hearst Field Annex

Shea Garrison-Kimmel, Irvine

Department of Astronomy

Studies of the Milky Way (MW) and Andromeda (M31) galaxies, along with their associated satellites and nearby dwarf galaxies, have proven immensely useful for constraining the cosmology of the Universe, particularly on small scales. I will present a number of simulations, many of which are a part of the ELVIS Suite, cosmological zoom-in simulations of Local Group-like volumes of MW/M31 pairs....   More >

Wednesday, September 17, 2014

Secondary-to-primary ratios of nuclei below Z=30 in a dynamic spiral-armed cosmic ray propagation model

Presentation | September 17 | 12:10 p.m. | B1 Hearst Field Annex

David Benyamin, Hebrew University, Jerusalem

Department of Astronomy

Over the years, significant effort was devoted to understand cosmic ray propagation in the galaxy from studying the secondary to primary ratios in galactic cosmic rays. We develop a fully three dimensional numerical code describing the diffusion of cosmic rays in the Milky Way. This code enables us to explore a model in which a large fraction of the cosmic ray acceleration takes place in the...   More >

CIPS Seminar

Seminar: CIPS Seminars | September 17 | 3 p.m. | B1 Hearst Field Annex

Jeffrey Fung, Toronto; Chris Ormel, UC Berkeley

Department of Astronomy

Jeffrey Fung (Toronto)
"PEnGUIn: A fast GPU hydrodynamics code"

Jeffrey will explain some of the inner workings of his code that produced the science results he showcased on Monday's TAC seminar. Come find out how GPUs can beat CPUs, and what PEnGUIn stands for.

Chris Ormel (Berkeley ---> Amsterdam)
"The atmospheres of low-mass planets in 1, 2, and 3 dimensions"

Chris is finishing his...   More >

Thursday, September 18, 2014

Dwarf Galaxies: The Nexus of Dark Matter and Chemical Evolution

Colloquium: Astronomy Colloquia | September 18 | 4:10 p.m. | 2 LeConte Hall

Evan Kirby, Caltech

Department of Astronomy

The Local Group's dwarf galaxies are near enough for exquisitely detailed, resolved stellar spectroscopy and diverse enough to conduct experiments on dark matter and chemical evolution. I have collected medium-resolution spectra for thousands of stars in many dwarf galaxies in the Local Group. Innovative techniques applied to these spectra recover velocities precise to a few km/s and detailed...   More >