Astrophysics and Space Science

, Volume 352, Issue 2, pp 955–961 | Cite as

Effects of electromagnetic field on the collapse and expansion of anisotropic gravitating source

Original Article
First Online:
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Abstract

This paper is devoted to study the effects of electromagnetic on the collapse and expansion of anisotropic gravitating source. For this purpose, we have evaluated the generating solutions of Einstein–Maxwell field equations with spherically symmetric anisotropic gravitating source. We found that a single function generates the various anisotropic solutions. In this case every generating function involves an arbitrary function of time which can be chosen to fit several astrophysical time profiles. Two physical phenomenon occur, one is gravitational collapse and other is the cosmological expanding solution. In both cases electromagnetic field effects the anisotropy of the model. For collapse the anisotropy is increased while for expansion it deceases from maximum value to finite positive value. In case of collapse there exits two horizons like in case of Reissner–Nordström metric.

Keywords

Gravitational collapse Electromagnetic field 
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Notes

Acknowledgement

We highly appreciate the fruitful comments of the anonymous referee for the improvements of the paper.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Department of MathematicsCOMSATS Institute of Information TechnologySahiwalPakistan

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