A new class of viable and exact solutions of EFEs with Karmarkar conditions: an application to cold star modeling

In this work we present a theoretical framework within Einstein's classical general relativity which models stellar compact objects such as PSR J1614-2230 and SAX J1808.4-3658. The Einstein field equations are solved by assuming that the interior of the compact object is described by a class I spacetime. The so-called Karmarkar condition arising from this requirement is integrated to reduce the gravitational behaviour to a single generating function. By appealing to physics we adopt a form for the gravitational potential which is sufficiently robust to accurately describe compact objects. Our model satisfies all the requirements for physically realistic stellar structures.

Automated summary

This work presents a theoretical framework within Einstein's classical general relativity to model stellar compact objects, with the assumption of a class I spacetime for the interior structure and the adoption of a robust gravitational potential form. The model satisfies all the requirements for physically realistic stellar structures.