Quasinormal modes and gray-body factors of regular black holes in asymptotically safe gravity

Autor:	Stashko, Oleksandr
Rok vydání:	2024
Předmět:	General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
Popis:	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. Comment: Accepted to Phys. Rev. D
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2407.07892 Zobrazit plný text záznamu View this record from Arxiv