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Accretion of Chaplygin gas upon black holes: formation of faster outflowing winds

Biswas, Ritabrata and Chakraborty, Subenoy and Saini, Tarun Deep and Mukhopadhyay, Banibrata (2011) Accretion of Chaplygin gas upon black holes: formation of faster outflowing winds. In: Classical and Quantum Gravity, 28 (3).

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Official URL: http://iopscience.iop.org/0264-9381/28/3/035005

Abstract

We study the accretion of modified Chaplygin gas upon different types of black holes. Modified Chaplygin gas is one of the best candidates for a combined model of dark matter and dark energy. In addition, from a field theoretical point of view the modified Chaplygin gas model is equivalent to that of a scalar field having a self-interacting potential. We formulate the equations related to both spherical accretion and disc accretion, and respective winds. The corresponding numerical solutions of the flow, particularly of velocity, are presented and analysed. We show that the accretion-wind system of modified Chaplygin gas dramatically alters the wind solutions, producing faster winds, upon changes in physical parameters, while accretion solutions qualitatively remain unaffected. This implies that modified Chaplygin gas is more prone to produce outflow which is the natural consequence of the dark energy into the system.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Apr 2011 06:36
Last Modified: 08 Apr 2011 06:36
URI: http://eprints.iisc.ernet.in/id/eprint/36044

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