Regular Article - Theoretical Physics
Relativistic equilibrium fluid configurations around rotating deformed compact objects
Center of Applied Space Technology and Microgravity (ZARM), University of Bremen, 28359, Bremen, Germany
2 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, AP 70543, 04510, Mexico City, Mexico
3 Dipartimento di Fisica and ICRANet, Università di Roma “La Sapienza”, 00185, Rome, Italy
Accepted: 23 November 2022
Published online: 20 December 2022
The main goal of this paper is to investigate the physical properties of equilibrium sequences of non-self-gravitating surfaces that characterize Thick disks around a rotating deformed compact object described by a stationary generalization of the static -metric. The space-time corresponds to an exact solution of Einstein’s field equations so that we can perform the analysis for arbitrary values of the quadrupole moment and rotation parameter. To study the properties of this disk model, we analyze bounded trajectories in this space-time. Further, we find that depending on the values of the parameters, we can have various disk structures that can easily be distinguished from the static case and also from the Schwarzschild background. We argue that this study may be used to evaluate the rotation and quadrupole parameters of the central compact object.
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