Abstract.
In this work, we have investigated the effects of dissipation on the dynamics of a collapsing sphere with heat flux in 5-dimensional Einstein-Gauss-Bonnet gravity. For this purpose, the field equations as well as mass function have been formulated in the 5-dimensional Einstein-Gauss-Bonnet theory of gravity. The Misner-Sharp approach has been implemented to derive the dynamical equations in the form of proper time and radial derivatives in 5-dimensional Einstein-Gauss-Bonnet gravity. We have explored the impact of heat flux on the dynamical collapse of a spherical source. In the context of the Israel-Stewart theory, the heat transport equations are modeled to determine the impacts of radial heat flux with the assumption that in some approximations one may neglect the thermodynamics heat/viscous coupling coefficients. Further, the dynamical equations have been coupled withthe heat transport equation, and the consequences of such equation with the Gauss-Bonnet coupling constant \( \alpha\) have been discussed in detail.
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Abbas, G., Tahir, M. Dynamics of the dissipative gravitational collapse in Einstein-Gauss-Bonnet gravity. Eur. Phys. J. Plus 133, 476 (2018). https://doi.org/10.1140/epjp/i2018-12274-8
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DOI: https://doi.org/10.1140/epjp/i2018-12274-8