Distribution of Forces in Gravitationally Clustered System

Publications of the Astronomical Society of Japan

Inagaki, Shogo²  Ardi, Eliani¹ 

[1] Department of Astronomy, Faculty of Science, Kyoto University, Sakyo-ku, Kyoto 606-01Department of Astronomy, Faculty of Science, Institute of Technology Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia E-mail(EA):;Department of Astronomy, Faculty of Science, Kyoto University, Sakyo-ku, Kyoto 606-01

关键词: Cosmology;    "Galaxies: clusters of";    Gravitation;    "Numerical methods";   

DOI  :  10.1093/pasj/49.2.187

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Wehavestudiedthedistributionofforcesingravitationalsystemsthroughnumericalexperiments.DataweretakenfromanN-bodysimulationinanexpandinguniverse.Beforeclustering,thedistributionofrandomforceswasrepresentedasaHoltsmarkdistribution;thenearest-neighbordistributionisalsoshownasacomparison.Theanalyticalandsimulationdistributionsareingoodagreement.Whenclusteringbecomesstrong,thesimulationresultshowedthatthecontributionoftheforcesactingoneachgalaxy,whichisgeneratedfromallothergalaxies,isalmostentirelyduetothegravitationalattractionofitsnearestneighbor.Thisimpliesthatnearest-neighborgalacticencountersmayplaythemainroleinthedynamicsofgalaxyclustering.

【 授权许可】

Unknown