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

The collapsing dynamics of relativistic fluid are explored in f (R) gravity in 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 system are found and the astrophysical applica-tions of these exact solutions are discussed. Furthermore, it is demonstrated that f (R) = R, which is the extensive restric-tion of f (R) gravity, prior solutions of the collapsing fluid in general relativity, can be retrieved.

Automated summary

This paper explores the collapsing dynamics of relativistic fluid in f (R) gravity in a detailed and systematic manner. Exact solutions for both dissipative and non-dissipative systems are found under the conditions of quasi-homologous and diminishing complexity factor. The astrophysical applications of these solutions are discussed, and it is shown that the previous solutions of collapsing fluid in general relativity can be retrieved when f (R) = R.