NGC 5128, J.L. Sersic, Atlas de Galaxias Australes, 1968
NGC 253, J.L. Sersic, Atlas de Galaxias Australes, 1968
1st Extragalactic Astronomy Meeting, 1975, J.L. Sersic, T.G. Catellanos, P. Kaufman
NGC 2442, J.L. Sersic, Atlas de Galaxias Australes, 1968
2nd Extragalactic Astronomy Meeting, 1987
NGC 2997, J.L. Sersic, Atlas de Galaxias Australes, 1968
3rd Extragalactic Astronomy Meeting, 1996
NGC 55, J.L. Sersic, Atlas de Galaxias Australes, 1968

Paz Dante

Argentina – IATE – OAC

Constraining Modified Gravity and Cosmological Parameters through Void Region Shapes and Abundance

In this talk, we present an analysis of the shapes and abundance of void regions identified using the Popcorn void finder code across various cosmological simulations. Our study investigates the dependence of void shapes on fundamental cosmological parameters, such as matter density, sigma_8 and S8, within the framework of LCDM simulations. Additionally, we explore modified gravity models, including the chameleon-screened Hu-Sawicki f(R) model and the normal-branch Dvali-Gabadadze-Porrati (nDGP) model, to understand their impact on void statistics.

Utilizing a model emulator, we delve into the constraining power of studying void abundance and shape within the context of redshift surveys. Through this research, we aim to gain valuable insights into the interplay between void properties and cosmological parameters, shedding light on the potential implications for modified gravity theories.

PROGRAM