KICP Seminars & Colloquia, Summer 2019

Seminar schedule for Summer 2019
July 12, 2019
Open Group seminar
Yuuki Omori
Stanford University
Survey synergy: combining CMB and galaxy surveys   [Abstract]
July 16, 2019
Special seminar
Taylor Hoyt
University of Chicago
The Carnegie-Chicago Hubble Program: A Tip of the Red Giant Branch measurement of the Hubble Constant   [Abstract]
 
SPECIAL SEMINARS

  • July 16, 2019 | 3:00 PM | ERC 401 | Special seminar
    The Carnegie-Chicago Hubble Program: A Tip of the Red Giant Branch measurement of the Hubble Constant
    Taylor Hoyt, University of Chicago

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    For as long as we have known about the expanding universe, the classical distance ladder measurement of the Hubble constant has relied on the Cepheid Leavitt Law. A century later, the Carnegie Chicago Hubble Program has used the tip of the red giant branch (TRGB) distance scale to measure a Hubble constant independent of the extragalactic Leavitt Law. In this talk, I will briefly summarize recent measurements of H0 (audience contributions invited), then present the main results of the TRGB program, followed by an open-ended discussion and Q+A.

 
OPEN GROUP SEMINARS

  • July 12, 2019 | 12:00 PM | ERC 401 | Open Group seminar
    Survey synergy: combining CMB and galaxy surveys
    Yuuki Omori, Stanford University

    Large scale structure (LSS) alters the appearance of both background galaxies and the cosmic microwave background (CMB) through the effect of gravitational lensing. Auto and cross-correlations of these observables provide us independent information, and the various probes can be combined to constrain cosmology. In this talk, I will present the recent results from combining SPT and DES year 1 data sets. I will also discuss what we have learnt, and the improvements we are going to make in the year 3 analysis.