The $\text{q}$-metric naked singularity: A viable explanation for the nature of the central object in the Milky Way

Abstract

In this work, we investigate whether the compact object at the center of the Milky Way is a naked singularity described by the $\text{q}$-metric spacetime. Our fitting of the astrometric and spectroscopic data for the S2 star implies that similarly to the Schwarzschild black hole, the $\text{q}$-metric naked singularity offers a satisfactory fit to the observed measurements. Additionally, it is shown that the shadow produced by the naked singularity is consistent with the shadow observed by the Event Horizon Telescope collaboration for Sgr-A*. It is worth mentioning that the spatial distribution of the S-stars favors the notion that the compact object at the center of our Galaxy can be described by an almost static spacetime. Based on these findings, the $\text{q}$-metric naked singularity turns up as a compelling candidate for further investigation.

Accepted for publication in Classical and Quantum Gravity

References in corpus (14)

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• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
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• Characterizing repulsive gravity with curvature eigenvalues
• Magnetized tori in the background of a deformed compact object
• Synchrotron emitting Komissarov torus around naked singularities
• Synchrotron emitting Komissarov torus with magnetic polarization around Kerr black holes

Cited by in corpus (7)

• A class of Taub-NUT-scalar metrics via Ehlers transformations
• A class of charged-Taub-NUT-scalar metrics via Harison and Ehlers Transformations
• Modelling the Sgr A${}^{\ast }$ and M87${}^{\ast }$ shadows by using the Kerr-Taub-NUT metrics in the presence of a scalar field
• Periodic orbits and their gravitational wave radiations in $\gamma$-metric
• Testing black hole space-times with the S2 star orbit: a Bayesian comparison
• Photon Ring Dimming as a Signature of Photon-Axion Conversion in Janis-Newman-Winicour Naked Singularity
• A Generalized Class of Taub-NUT-Scalar Metrics