September 25, 2018
11:30AM
-
12:30PM
PRB 4138
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2018-09-25 10:30:00
2018-09-25 11:30:00
CCAPP Seminar: "Astrophysical Tests of Gravitation and Dark Matter" Kris Pardo (Princeton)
Dark energy and dark matter make up most of the energy content of the Universe; yet, we still know very little about either of them. During my talk, I will highlight two ways of using astrophysical data to constrain theories of dark energy and dark matter. First, I will discuss how we can use the recent multi-messenger gravitational wave event GW170817 to test higher-dimensional theories of gravity, which are often invoked to explain dark energy. I will show how we can use just this one event to constrain the number of large extra dimensions to 4, within a few percent. Then, I will discuss how we can use warps in galactic disks to constrain self-interacting dark matter. We have found that we can obtain constraints on the self-interaction cross section that are competitive with the Bullet Cluster constraints. As we continue to collect ever larger amounts of data on astrophysical systems, it is important to think through unique applications of this data to fundamental physics.
PRB 4138
OSU ASC Drupal 8
ascwebservices@osu.edu
America/New_York
public
Date Range
2018-09-25 11:30:00
2018-09-25 12:30:00
CCAPP Seminar: "Astrophysical Tests of Gravitation and Dark Matter" Kris Pardo (Princeton)
Dark energy and dark matter make up most of the energy content of the Universe; yet, we still know very little about either of them. During my talk, I will highlight two ways of using astrophysical data to constrain theories of dark energy and dark matter. First, I will discuss how we can use the recent multi-messenger gravitational wave event GW170817 to test higher-dimensional theories of gravity, which are often invoked to explain dark energy. I will show how we can use just this one event to constrain the number of large extra dimensions to 4, within a few percent. Then, I will discuss how we can use warps in galactic disks to constrain self-interacting dark matter. We have found that we can obtain constraints on the self-interaction cross section that are competitive with the Bullet Cluster constraints. As we continue to collect ever larger amounts of data on astrophysical systems, it is important to think through unique applications of this data to fundamental physics.
PRB 4138
America/New_York
public
Dark energy and dark matter make up most of the energy content of the Universe; yet, we still know very little about either of them. During my talk, I will highlight two ways of using astrophysical data to constrain theories of dark energy and dark matter. First, I will discuss how we can use the recent multi-messenger gravitational wave event GW170817 to test higher-dimensional theories of gravity, which are often invoked to explain dark energy. I will show how we can use just this one event to constrain the number of large extra dimensions to 4, within a few percent. Then, I will discuss how we can use warps in galactic disks to constrain self-interacting dark matter. We have found that we can obtain constraints on the self-interaction cross section that are competitive with the Bullet Cluster constraints. As we continue to collect ever larger amounts of data on astrophysical systems, it is important to think through unique applications of this data to fundamental physics.
