Buraco negro pulsante com rotação.

Abstract

Since solutions of the General Relativity Theory (TRG) were obtained, researchers realized that such results brought with it a new type of physics: black holes. From the Hawking-Penrose theorem and its generalizations it is demonstrated that in the center of these objects there is the formation of a singularity, a region of space-time in which physics loses its meaning .For this to be solved among other problems, one must use more fundamental theories, such as the loop quantum gravity and braneworld models. However, using this approach promotes a new dynamics for black holes, which is that of the pulsation and with it, consequently, new effects appear in the gravitational field. Here, we analyse, from a model of the braneworld, a black hole that besides having the radial dynamics of pulsation, has an angular momentum. To obtain this solution we used the Newman-Janis algorithm in the static metric proposed by Gao et al. (2018). As a result, we get the outer line element to the perfect fluid that pulsates and rotates, simultaneously. Analyses made of this new solution lead us to new aspects of black holes, such as flattening of the event horizon and variation of angular velocity as a function of latitude and, as expected, in the limit in which the effect given by the studied brane's theory is negligible, were turn to the cases of TRG: Kerr and Schwarzschild.