Shadow and greybody bounding of a regular scale-dependent black hole solution
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Título: | Shadow and greybody bounding of a regular scale-dependent black hole solution |
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Autor/es: | Övgün, Ali | Pantig, Reggie C. | Rincón, Ángel |
Grupo/s de investigación o GITE: | Astrofísica Relativista |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | General relativity | Black hole | Shadow | Deflection angle | Greybody |
Fecha de publicación: | 20-feb-2024 |
Editor: | Elsevier |
Cita bibliográfica: | Annals of Physics. 2024, 463: 169625. https://doi.org/10.1016/j.aop.2024.169625 |
Resumen: | In this manuscript, we explore the shadow and the greybody bounding characteristics of a regular black hole within 4-dimensional space–time, employing the context of gravity that is scale-dependent. Our focus lies in determining limitations on the parameter denoted as 𝜖, which serves as a descriptor for the scale-dependent solution with respect to the classically observed shadow radius 𝑅sh as indicated in the documented data from the Event Horizon Telescope (EHT). Our result indicates that there is a unique value for 𝜖 occurring at the reported mean of 𝑅sh and the uncertainties could be the result of the fluctuating value of the scale-dependent parameter. We found that 𝜖 > 0 is positive for Sgr. A*, but 𝜖 < 0 for M87*. Utilizing M87* as a reference model, we scrutinized the shadow radius and weak deflection angle within the specified constraints. Discrepancies were observed not only in the shadow but also in the deflection angle of photons, particularly when the photon’s impact parameter closely approached the critical impact parameter. |
Patrocinador/es: | A. R. acknowledges financial support from the Generalitat Valenciana through PROMETEO PROJECT CIPROM/2022/13. A. R. is funded by the María Zambrano contract ZAMBRANO 21-25 (Spain) (with funding from NextGenerationEU). A. Ö. and R. P. would like to acknowledge networking support by the COST Action CA18108 - Quantum gravity phenomenology in the multi-messenger approach (QG-MM). A. Ö. and R. P. also would like to acknowledge networking support by the COST Action CA21106 - COSMIC WISPers in the Dark Universe: Theory, astrophysics and experiments (CosmicWISPers), the COST Action CA22113 - Fundamental challenges in theoretical physics (THEORY-CHALLENGES), and the COST Action CA21136 - Addressing observational tensions in cosmology with systematics and fundamental physics: (FUNDAMENTAL PHYSICS). |
URI: | http://hdl.handle.net/10045/141072 |
ISSN: | 0003-4916 (Print) | 1096-035X (Online) |
DOI: | 10.1016/j.aop.2024.169625 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2024 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.aop.2024.169625 |
Aparece en las colecciones: | INV - Astrofísica Relativista - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Ovgun_etal_2024_AnnPhys.pdf | 1,08 MB | Adobe PDF | Abrir Vista previa | |
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