Video URL
https://pirsa.org/16030076Testing gravity using astrophysics
APA
Sakstein, J. (2016). Testing gravity using astrophysics. Perimeter Institute for Theoretical Physics. https://pirsa.org/16030076
MLA
Sakstein, Jeremy. Testing gravity using astrophysics. Perimeter Institute for Theoretical Physics, Mar. 08, 2016, https://pirsa.org/16030076
BibTex
@misc{ scivideos_PIRSA:16030076, doi = {10.48660/16030076}, url = {https://pirsa.org/16030076}, author = {Sakstein, Jeremy}, keywords = {Cosmology}, language = {en}, title = {Testing gravity using astrophysics}, publisher = {Perimeter Institute for Theoretical Physics}, year = {2016}, month = {mar}, note = {PIRSA:16030076 see, \url{https://scivideos.org/index.php/pirsa/16030076}} }
Jeremy Sakstein University of Pennsylvania
Abstract
Alternative theories of gravity are popular alternatives to the LCDM model because they can self-accelerate without a cosmological constant. On smaller scales, consistency with solar system tests of gravity is achieved by utilising screening mechanisms, which act to hide fifth-forces locally. This makes them difficult to distinguish from general relativity. In this talk I will describe recent work using astrophysical objects---stars, galaxies, and clusters---as new and novel probes of alternative gravity theories.