High energy collisions of black holes numerically revisited Article Swipe
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1103/physrevd.94.104020
· OA: W1806027388
We use fully nonlinear numerical relativity techniques to study high energy\nhead-on collision of nonspinning, equal-mass black holes to estimate the\nmaximum gravitational radiation emitted by these systems. Our simulations\ninclude improvements in the construction of initial data, subsequent full\nnumerical evolutions, and the computation of waveforms at infinity. The new\ninitial data significantly reduces the spurious radiation content, allowing for\ninitial speeds much closer to the speed of light, i.e. $v\\sim0.99c$. Using\nthese new techniques, We estimate the maximum radiated energy from head-on\ncollisions to be $E_{\\text{max}}/M_{\\text{ADM}}=0.13\\pm0.01$. This value\ndiffers from the second-order perturbative $(0.164)$ and zero-frequency-limit\n$(0.17)$ analytic computations, but is close to those obtained by thermodynamic\narguments $(0.134)$ and by previous numerical estimates $(0.14\\pm0.03)$.\n
