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arXiv · 2308.08564

Collapsing dynamics of relativistic fluid in modified gravity admitting a conformal Killing vector

Kazuharu Bamba·Z. Yousaf·M. Z. Bhatti·R. Nazer·Yuki Hashimoto
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Abstract

The collapsing dynamics of relativistic fluid are explored in $f(R)$ gravity in a detailed systematic manner for the non-static spherically symmetric spacetime satisfying the equation of the conformal Killing vector. With quasi-homologous condition and diminishing complexity factor condition, exact solutions for dissipative as well as for non-dissipative systems are found and the astrophysical applications of these exact solutions are discussed. Furthermore, it is demonstrated that $f(R)=R$, which is the extensive restriction of $f(R)$ gravity, prior solutions of the collapsing fluid in general relativity, can be retrieved.

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Kazuharu Bamba, Z. Yousaf, M. Z. Bhatti, R. Nazer, Yuki Hashimoto. 2023-08-15. Collapsing dynamics of relativistic fluid in modified gravity admitting a conformal Killing vector. https://doi.org/10.1140/epjc%2Fs10052-023-11911-2

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