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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sharif, M. Kausar, H. Rizwana |
| Copyright Year | 2011 |
| Abstract | We consider a collapsing sphere and discuss its evolution under the vanishing expansion scalar in the framework of f(R) gravity. The fluid is assumed to be locally anisotropic which evolves adiabatically. To study the dynamics of the collapsing fluid, Newtonian and post Newtonian regimes are taken into account. The field equations are investigated for a well-known f(R) model of the form R+δR 2 admitting Schwarzschild solution. The perturbation scheme is used on the dynamical equations to explore the instability conditions of expansionfree fluid evolution. We conclude that instability conditions depend upon pressure anisotropy, energy density and some constraints arising from this theory. |
| Starting Page | 805 |
| Ending Page | 813 |
| Page Count | 9 |
| File Format | |
| ISSN | 0004640X |
| Journal | Astrophysics and Space Science |
| Volume Number | 337 |
| Issue Number | 2 |
| e-ISSN | 1572946X |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2011-10-05 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | f(R) gravity Instability Newtonian and post Newtonian regimes Astronomy, Observations and Techniques |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
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