Observational properties of regular black holes in asymptotic safety
Abstract We consider the observational properties of a spherically symmetric, static regular black hole within the framework of asymptotic safety (AS) as proposed by Bonanno et al. The metric resembles the Schwarzschild solution in the classical limit. The departure from Schwarzschild at small scale...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14377-6 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850102267372371968 |
|---|---|
| author | Abdybek Urmanov Hrishikesh Chakrabarty Daniele Malafarina |
| author_facet | Abdybek Urmanov Hrishikesh Chakrabarty Daniele Malafarina |
| author_sort | Abdybek Urmanov |
| collection | DOAJ |
| description | Abstract We consider the observational properties of a spherically symmetric, static regular black hole within the framework of asymptotic safety (AS) as proposed by Bonanno et al. The metric resembles the Schwarzschild solution in the classical limit. The departure from Schwarzschild at small scales is controlled by a single free parameter related to the ultraviolet (UV) cutoff of the theory. We investigated null and time-like geodesics around the AS metric, including circular orbits, photon rings and lensing effects. In particular we focused on the optical properties of thin accretion disks in the equatorial plane of the object and compared them with those of accretion disks in the Schwarzschild metric. We found that the radiation flux, luminosity, and efficiency of the accretion disk increase with the value of the free parameter. Using a spacetime generic open-source relativistic ray-tracing code, we simulate the K $$\alpha $$ α iron line profiles emitted by the disk and analyze their deviation from that of the Schwarzschild geometry. |
| format | Article |
| id | doaj-art-1e301e5e72654cc6988a00b0c57fed7d |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-1e301e5e72654cc6988a00b0c57fed7d2025-08-20T02:39:48ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-06-0185611210.1140/epjc/s10052-025-14377-6Observational properties of regular black holes in asymptotic safetyAbdybek Urmanov0Hrishikesh Chakrabarty1Daniele Malafarina2Department of Physics, Nazarbayev UniversityDepartment of Physics, Nazarbayev UniversityDepartment of Physics, Nazarbayev UniversityAbstract We consider the observational properties of a spherically symmetric, static regular black hole within the framework of asymptotic safety (AS) as proposed by Bonanno et al. The metric resembles the Schwarzschild solution in the classical limit. The departure from Schwarzschild at small scales is controlled by a single free parameter related to the ultraviolet (UV) cutoff of the theory. We investigated null and time-like geodesics around the AS metric, including circular orbits, photon rings and lensing effects. In particular we focused on the optical properties of thin accretion disks in the equatorial plane of the object and compared them with those of accretion disks in the Schwarzschild metric. We found that the radiation flux, luminosity, and efficiency of the accretion disk increase with the value of the free parameter. Using a spacetime generic open-source relativistic ray-tracing code, we simulate the K $$\alpha $$ α iron line profiles emitted by the disk and analyze their deviation from that of the Schwarzschild geometry.https://doi.org/10.1140/epjc/s10052-025-14377-6 |
| spellingShingle | Abdybek Urmanov Hrishikesh Chakrabarty Daniele Malafarina Observational properties of regular black holes in asymptotic safety European Physical Journal C: Particles and Fields |
| title | Observational properties of regular black holes in asymptotic safety |
| title_full | Observational properties of regular black holes in asymptotic safety |
| title_fullStr | Observational properties of regular black holes in asymptotic safety |
| title_full_unstemmed | Observational properties of regular black holes in asymptotic safety |
| title_short | Observational properties of regular black holes in asymptotic safety |
| title_sort | observational properties of regular black holes in asymptotic safety |
| url | https://doi.org/10.1140/epjc/s10052-025-14377-6 |
| work_keys_str_mv | AT abdybekurmanov observationalpropertiesofregularblackholesinasymptoticsafety AT hrishikeshchakrabarty observationalpropertiesofregularblackholesinasymptoticsafety AT danielemalafarina observationalpropertiesofregularblackholesinasymptoticsafety |