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Role of Modified Chaplygin Gas as an Unified Dark Matter-Dark Energy Model in Collapsing Spherically Symmetric Dust Cloud

2008; Springer Science+Business Media; Volume: 47; Issue: 10 Linguagem: Inglês

10.1007/s10773-008-9703-4

0020-7748

Ujjal Debnath, Subenoy Chakraborty,

Galaxies: Formation, Evolution, Phenomena

In this work gravitational collapse of a spherical dust cloud in the background of unified dark matter-dark energy model in the form of modified Chaplygin gas is studied. It is found that invisible matter (dark matter-dark energy) alone in the form of modified Chaplygin gas forms black hole. Also when both components of the fluid are present then the collapse favours the formation of black hole in cases the invisible matter dominates over ordinary dust. The conclusion is totally opposite to the usually known results.