Quasinormal modes and gray-body factors of regular black holes in asymptotically safe gravity
Fuente:
arXiv
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866910717440950272 |
|---|---|
| author | Stashko, Oleksandr |
| author_facet | Stashko, Oleksandr |
| contents | Recently, Bonanno et al. (2024) presented an explicit metric describing the exterior of a collapsing dust ball within the framework of asymptotically safe gravity. Based on this metric, we investigate in detail the properties of the quasinormal mode (QNM) spectra for test massless scalar, vector, and Dirac fields. We find accurate values for the fundamental QNM frequency and the first overtones, demonstrating the appearance of a peculiar spiral-like behavior of the overtones compared to the fundamental modes. Additionally, we study black hole shadows and show that they align with EHT observations. Finally, we study the grey-body factors and provide explicit lower bound estimates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_07892 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quasinormal modes and gray-body factors of regular black holes in asymptotically safe gravity Stashko, Oleksandr General Relativity and Quantum Cosmology Recently, Bonanno et al. (2024) presented an explicit metric describing the exterior of a collapsing dust ball within the framework of asymptotically safe gravity. Based on this metric, we investigate in detail the properties of the quasinormal mode (QNM) spectra for test massless scalar, vector, and Dirac fields. We find accurate values for the fundamental QNM frequency and the first overtones, demonstrating the appearance of a peculiar spiral-like behavior of the overtones compared to the fundamental modes. Additionally, we study black hole shadows and show that they align with EHT observations. Finally, we study the grey-body factors and provide explicit lower bound estimates. |
| title | Quasinormal modes and gray-body factors of regular black holes in asymptotically safe gravity |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2407.07892 |