Stationary Scalar Clouds around Kerr-Newman Black Holes

Autor:	Guo, Guangzhou, Wang, Peng, Wu, Tianshu, Yang, Haitang
Rok vydání:	2024
Předmět:	General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
Popis:	This study investigates scalar clouds around Kerr-Newman black holes within the Einstein-Maxwell-scalar model. Tachyonic instabilities are identified as the driving mechanism for scalar cloud formation. Employing the spectral method, we numerically compute wave functions and parameter space existence domains for both fundamental and excited scalar cloud modes. Our analysis demonstrates that black hole spin imposes an upper limit on the existence of scalar clouds, with excited modes requiring stronger tachyonic instabilities for their formation. These findings lay the groundwork for exploring the nonlinear dynamics and astrophysical implications of scalar clouds. Comment: 23 pages, 6 figures, 1 table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2408.09243 Zobrazit plný text záznamu View this record from Arxiv