Detailed Information on Publication Record
2011
Influence of the cosmological constant on the motion of Magellanic Clouds in the gravitational field of Milky Way
SCHEE, Jan and Zdeněk STUCHLÍKBasic information
Original name
Influence of the cosmological constant on the motion of Magellanic Clouds in the gravitational field of Milky Way
Authors
Edition
Journal of Cosmology and Astroparticle Physics, GB - Spojené království Velké Británie a, 2011, 1475-7516
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000296767000018
Keywords in English
gravity, galaxy dynamics
Tags
Tags
International impact, Reviewed
Links
LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 13/1/2021 11:59, Mgr. Pavlína Jalůvková
Abstract
V originále
Using the pseudo-Newtonian (RN) potential reflecting properties of the Schwarzschild-de Sitter spacetime, we estimate the influence of the repulsive cosmological constant Lambda similar to 1.3 x 10(-56)cm(-2) implied by recent cosmological tests onto themotion of both Small and Large Magellanic Clouds (SMC and LMC) in the gravitational field of the Milky Way. Considering detailed modelling of the gravitational field of the Galaxy disc, bulge and cold dark matter halo, the trajectories of SMC and LMC constructed for the PN potential with the cosmological constant are confronted to those given for Lambda = 0. In the realistic model of the extended cold dark matter halo its edge and related total mass are taken at typical values reflecting recent diversity in the total Galaxy mass estimates. In all cases, strong influence of the cosmological constant, on 10% level or higher, has been found for motion of both SMC and LMC. Inside the halo, the Newtonian part of the PN potential is exact en