Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations
Abstract One of the possible ways to test gravity theories and get constraints on parameters of a gravity theory and a black hole is based on studies of black hole shadow applying Event Horizon Telescope (EHT) data from the shadow sizes of M87* and Sgr A*. In this sense, we study the shadow of rotat...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13500-3 |
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| author | Odil Yunusov Javlon Rayimbaev Furkat Sarikulov Muhammad Zahid Ahmadjon Abdujabbarov Zdeněk Stuchlík |
| author_facet | Odil Yunusov Javlon Rayimbaev Furkat Sarikulov Muhammad Zahid Ahmadjon Abdujabbarov Zdeněk Stuchlík |
| author_sort | Odil Yunusov |
| collection | DOAJ |
| description | Abstract One of the possible ways to test gravity theories and get constraints on parameters of a gravity theory and a black hole is based on studies of black hole shadow applying Event Horizon Telescope (EHT) data from the shadow sizes of M87* and Sgr A*. In this sense, we study the shadow of rotating charged black holes in Einstein–Maxwell scalar (EMS) theory. First, we obtain a rotating EMS black hole solution and analyze the horizon properties. We derive the effective potential for the circular motion of photons along null geodesics around the rotating black hole and obtain the black hole shadow using celestial coordinates. The effects of the black charge and spin and EMS theory parameters on the shape of the black hole shadow, its radius, and distortion parameters are analyzed in detail. We have obtained upper and lower limits for spin and black hole charges of Sgr A* and M87* using their shadow size for various values of EMS parameters. Lastly, we computed and examined the standard shadow radius, equatorial, and polar quasinormal modes using the geometric-optic relationship between the parameters of the quasinormal mode and the conserved values along the geodesics. |
| format | Article |
| id | doaj-art-6c4d11f0bed048d485aaf6adcc9f026f |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-6c4d11f0bed048d485aaf6adcc9f026f2025-02-02T12:38:54ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-12-01841211710.1140/epjc/s10052-024-13500-3Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observationsOdil Yunusov0Javlon Rayimbaev1Furkat Sarikulov2Muhammad Zahid3Ahmadjon Abdujabbarov4Zdeněk Stuchlík5Ulugh Beg Astronomical InstituteInstitute of Fundamental and Applied Research, National Research University TIIAMEUlugh Beg Astronomical InstituteSchool of Science, Harbin Institute of TechnologyNational Research University TIIAMEInstitute of Physics, Research Centre for Theoretical Physics and Astrophysics, Silesian UniversityAbstract One of the possible ways to test gravity theories and get constraints on parameters of a gravity theory and a black hole is based on studies of black hole shadow applying Event Horizon Telescope (EHT) data from the shadow sizes of M87* and Sgr A*. In this sense, we study the shadow of rotating charged black holes in Einstein–Maxwell scalar (EMS) theory. First, we obtain a rotating EMS black hole solution and analyze the horizon properties. We derive the effective potential for the circular motion of photons along null geodesics around the rotating black hole and obtain the black hole shadow using celestial coordinates. The effects of the black charge and spin and EMS theory parameters on the shape of the black hole shadow, its radius, and distortion parameters are analyzed in detail. We have obtained upper and lower limits for spin and black hole charges of Sgr A* and M87* using their shadow size for various values of EMS parameters. Lastly, we computed and examined the standard shadow radius, equatorial, and polar quasinormal modes using the geometric-optic relationship between the parameters of the quasinormal mode and the conserved values along the geodesics.https://doi.org/10.1140/epjc/s10052-024-13500-3 |
| spellingShingle | Odil Yunusov Javlon Rayimbaev Furkat Sarikulov Muhammad Zahid Ahmadjon Abdujabbarov Zdeněk Stuchlík Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations European Physical Journal C: Particles and Fields |
| title | Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations |
| title_full | Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations |
| title_fullStr | Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations |
| title_full_unstemmed | Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations |
| title_short | Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations |
| title_sort | rotating charged black holes in ems theory shadow studies and constraints from eht observations |
| url | https://doi.org/10.1140/epjc/s10052-024-13500-3 |
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