TL;DR
This paper derives and validates analytical external spherical solutions in entangled relativity, enabling easier computation of observables like X-ray pulse profiles without detailed matter equations.
Contribution
It introduces analytical external solutions in entangled relativity and demonstrates their agreement with numerical models, simplifying observational predictions.
Findings
Analytical solutions match numerical results outside compact objects.
Solutions depend on only two parameters, simplifying calculations.
Enables computation of observables without detailed matter equations.
Abstract
In this manuscript, we present analytical external spherical solutions of entangled relativity, which we compare to numerical solutions obtained in a Tolman-Oppenheimer-Volkoff framework. Analytical and numerical solutions match perfectly well outside spherical compact objects, therefore validating both types of solutions at the same time. The analytical external (hairy) solutions -- which depend on two parameters only -- may be used in order to easily compute observables -- such as X-ray pusle profiles -- without having to rely on an unknown equation of state for matter inside the compact object.
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