We discuss a method to study linear perturbations of generic rotating spacetimes in the slow-rotation limit. The framework is valid for any perturbation field and it is particularly advantageous when the field equations are not separable. Using this approach, we show that massive vector perturbations in the Kerr metric exibit strong superradiant instabilities, which put competitive constraints on the mass of the photon: mγ ≲ 10−20 eV.
PERTURBATIONS OF SPINNING BLACK HOLES: SLOW-ROTATION FRAMEWORK / Pani, Paolo. - STAMPA. - (2015), pp. 1183-1185. (Intervento presentato al convegno 13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity tenutosi a Stoccolma) [10.1142/9789814623995_0116].
PERTURBATIONS OF SPINNING BLACK HOLES: SLOW-ROTATION FRAMEWORK
PANI, PAOLO
2015
Abstract
We discuss a method to study linear perturbations of generic rotating spacetimes in the slow-rotation limit. The framework is valid for any perturbation field and it is particularly advantageous when the field equations are not separable. Using this approach, we show that massive vector perturbations in the Kerr metric exibit strong superradiant instabilities, which put competitive constraints on the mass of the photon: mγ ≲ 10−20 eV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
