Skip to the main content

Original scientific paper

Nonsingular cosmological models with a variable cosmological term Λ

Anirudh Pradhan ; Department of Mathematics, Hindu Post-graduate College, Zamania-232 331, Ghazipur, India
Kashika Srivastava ; Department of Mathematics, Hindu Post-graduate College, Zamania-232 331, Ghazipur, India
Amrit Lal Ahuja ; Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune-411 007, India


Full text: english pdf 173 Kb

page 141-158

downloads: 68

cite


Abstract

Ponovno razmatramo egzaktna rješenja Einsteinovih jednadžbi polja za sferno simetrični kozmološki model bez velikog praska i drugih singulariteta, koji su nedavno razvili Dadhich i Patel (2000). Sadržaj tvari u modelu je perfektna tekućina bez posmika s izotropnim tlakom i radijalnim tokom topline. Izveli smo tri egzaktna rješenja za perfektnu tekućinu i tekućinu s volumnom viskoznošću. Dobivamo kozmološki član Λ(t) koji opada s vremenom, što je u skladu s novim opažanjima supernova tipa Ia.

Keywords

Hrčak ID:

304467

URI

https://hrcak.srce.hr/304467

Publication date:

1.7.2007.

Article data in other languages: english

Visits: 408 *