Qualitative behaviour of gravitational perturbations in Chaplygin Gas - Unifying Dark Matter and Dark Energy

• Type: Article in International Conference Proceedings Book
• Date: 2019

Authors

Zaidi, A (Author) Other; de Carvalho, JPM (Author) FCUP; Fernandes, RAA (Author) Other

Conference proceedings International

Title: Journal of Physics: Conference Series

4th Algerian Conference on Astronomy and Astrophysics 2017, ACAA 2017

27 March 2017 through 29 March 2017

Indexing

Scopus - 0 Citations

Scientific classification

CORDIS: Physical sciences > Physics > Mathematical physics ; Physical sciences > Mathematics > Applied mathematics ; Physical sciences > Astronomy > Cosmology

FOS: Natural sciences > Physical sciences ; Natural sciences > Mathematics

Other information

Authenticus ID: P-00Q-YXR

DOI: 10.1088/1742-6596/1269/1/012016

Abstract (EN): Two unified models of dark matter (DM) and dark energy (DE) are analysed, namely the Generalized Chaplygin Gas and the Modified Chaplygin Gas models. We study the qualitative behaviour of gravitational perturbations in both models, analysing their dynamical systems which describe the linear density perturbations, and graphically show the wavenumber, or k-dependence of the solutions. Finally we compare the two models and try to conclude which of them is close to available observations.

Language: English

Type (Professor's evaluation): Scientific