Nonlinear Cosmological probes of gravity theories beyond General Relativity

Seria: 
Seminarium Zakładu Astrofizyki
Prelegent i afiliacja: 
David F. Mota (Institute of Theoretical Astrophysics, University of Oslo)
Data: 
wt., 2023-03-28 12:30 do 13:30
Miejsce: 
ul. Pasteura 7, sala 404 / https://www.gotomeet.me/NCBJmeetings/seminarium-astrofizyczne
Streszczenie: 

Several modifications to general relativity have been proposed with the aim to explain the nature of dark energy and the accelerated expansion of the Universe. In this talk I will review the present status of modified theories of gravity in the light of astrophysical probes of gravity in the weak-field regime, ranging from stars to cosmological scales.  I begin by setting the scene for how theories beyond General Relativity are expected to behave in the different astrophysical systems, as well as their cosmological signatures. With these in hand, I present a range of observational tests with an eye to using the current and next generation of observations for tests of gravity. In particular, I will show how physical observables of the non-linear regime of structure formation are promising probes to constraining theoretical models in the nonlinear dynamics of stars, galaxies, clusters and large scale structure.

Załączniki: 
ZałącznikWielkość
Plik astrosemi20230328.docx14.43 KB
PDF icon astrosemi20230328.pdf10.38 KB