2006/10/09 by M. Sharif, Zahid Ahmad · 51 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Constant (computer programming) #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #Generalization #Gravitation #Gravitational collapse #Limit (mathematics) #Mathematical analysis #Mathematical physics #Metric expansion of space #Perfect fluid #Physics #Relativity and Gravitational Theory #Theoretical physics #gr-qc
paper · pdf · doi:10.1142/s0217732307021834
published in Modern Physics Letters A 22(20), 1493-1502 (World Scientific) · LaTex 13 pages, accepted for publication in Mod. Phys. Lett. A
arxiv created 2006/10/09 · openalex publication_date 2007/06/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper, the effect of a positive cosmological constant on spherically symmetric collapse with perfect fluid has been investigated. The matching conditions between static exterior and non-static interior spacetimes are given in the presence of a cosmological constant. We also study the apparent horizons and their physical significance. It is concluded that the cosmological constant slows down the collapse of matter and hence limit the size of the black hole. This analysis gives the generalization of the dust case to the perfect fluid. We recover the results of the dust case for p = 0.