CCAPP Seminar: Yi-Kuan Chiang and Anna Porredon

Image
CCAPP Logo
February 18, 2020
11:30AM - 12:30PM
Location
PRB 4138

Date Range
Add to Calendar 2020-02-18 11:30:00 2020-02-18 12:30:00 CCAPP Seminar: Yi-Kuan Chiang and Anna Porredon Probing the Cosmic Energy Density Inventory with Tomographic Intensity Mapping- Yi-Kuan Chiang The cosmic energy density inventory, i.e., Omega_x, evolves during the epoch of galaxy formation. I will talk about my ongoing effort to probe the history of some of the cosmic constituents, including stars, dust, and the thermal energy in hot halo gas. These are constrained via tomographic intensity mapping of the cosmic UV, IR, and the SZ effect backgrounds, respectively. I will discuss the potential of expanding the work in probing the cosmic history of black hole accretion and magnetic energy density. Cosmology from the Combination of Clustering and Weak Lensing: Impact of Lensing Sample- Anna Porredon Ongoing and future galaxy surveys will enable detailed measurements of the large-scale structure of the late-time Universe, and with them powerful tests of the nature of dark energy and General Relativity. In this talk I will focus on the Dark Energy Survey analysis of its first three years of observations. In particular, I will show how we have optimized the definition of a galaxy sample in terms of its cosmological constraints from galaxy clustering in combination with weak lensing. PRB 4138 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public
Description

Probing the Cosmic Energy Density Inventory with Tomographic Intensity Mapping- Yi-Kuan Chiang

The cosmic energy density inventory, i.e., Omega_x, evolves during the epoch of galaxy formation. I will talk about my ongoing effort to probe the history of some of the cosmic constituents, including stars, dust, and the thermal energy in hot halo gas. These are constrained via tomographic intensity mapping of the cosmic UV, IR, and the SZ effect backgrounds, respectively. I will discuss the potential of expanding the work in probing the cosmic history of black hole accretion and magnetic energy density.

Cosmology from the Combination of Clustering and Weak Lensing: Impact of Lensing Sample- Anna Porredon

Ongoing and future galaxy surveys will enable detailed measurements of the large-scale structure of the late-time Universe, and with them powerful tests of the nature of dark energy and General Relativity. In this talk I will focus on the Dark Energy Survey analysis of its first three years of observations. In particular, I will show how we have optimized the definition of a galaxy sample in terms of its cosmological constraints from galaxy clustering in combination with weak lensing.

Events Filters: