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Special Cosmology Seminar

Optimal and Accurate Cosmology with Next-generation Surveys
Presented by Jonathan Blazek
Laboratoire d'astrophysique (EPFL), Observatoire de Sauverny, Switzerland

Wednesday, March 7, 2018
1:15 P.M. in 169-336

The coming decade will be an exciting time for understanding the dark sector of the Universe. Space and ground-based projects, including WFIRST, Euclid, and LSST, will observe an unprecedented number of galaxies and other astrophysical objects. For these projects to be successful, it is critical to develop robust strategies that fully utilize this statistical power to extract cosmological information. I will present my work connecting these observations to the underlying cosmological and astrophysical processes. In particular, I will discuss an analytic framework that maps between the behavior of dark matter and dark energy and the observed positions and shapes of galaxies (or any other luminous tracer). I will describe how this framework can be used in joint analyses of multiple probes or data sets, using our recent results from DES as an example. Finally, I will discuss how combining information from multiple surveys provides not only better statistical power but also valuable opportunities to understand astrophysical systematic effects.

JPL Contact: If you would like to meet with the speaker, contact Jason Rhodes (4-3304).

SVCP Astrophysics

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