Scalarization of slowly rotating black holes

Abstract

It is interesting to note that most black holes are born very slowly rotating. We investigate scalarization of slowly rotating black holes in the Einstein-scalar-Chern-Simons (EsCS) theory. In the slow rotation approximation, the CS term takes a linear form of rotation parameter $a$ which determines the tachyonic instability. The tachyonic instability for slowly rotating black holes represents the onset of spontaneous scalarization. It is shown that the slowly rotating black holes are unstable against a spherically symmetric scalar-mode perturbation for positive coupling $\alpha$, whereas these black holes are unstable for negative coupling without any $a$-bound.

arXiv comment12 pages, 3 figures

References in corpus (15)

• Dynamical Chern-Simons Modified Gravity I: Spinning Black Holes in the Slow-Rotation Approximation
• Most Black Holes are Born Very Slowly Rotating
• Spontaneously scalarised Kerr black holes
• Spin-induced scalarized black holes
• Spin-induced black hole spontaneous scalarization
• Spin-induced black hole scalarization in Einstein-scalar-Gauss-Bonnet theory
• Spinning and excited black holes in Einstein-scalar-Gauss-Bonnet theory
• Black hole scalarization induced by the spin -- 2+1 time evolution
• Onset of spontaneous scalarization in spinning Gauss-Bonnet black holes
• Numerical investigation of the late-time Kerr tails
• Scalar perturbations on the background of Kerr black holes in the quadratic dynamical Chern-Simons gravity
• Onset of rotating scalarized black holes in Einstein-Chern-Simons-Scalar theory
• Spontaneously scalarized black holes in dynamical Chern-Simons gravity: dynamics and equilibrium solutions
• Object picture of scalar field perturbation on Kerr black hole in scalar-Einstein-Gauss-Bonnet theory
• On slowly rotating black holes and nonlinear electrodynamics

Cited by in corpus (1)

• Slowly rotating black holes and their scalarization