Rotating black holes at future colliders. II. Anisotropic scalar field emission

This is the sequel to the first paper of the series, where we have discussed the Hawking radiation from five-dimensional rotating black holes for spin 0, $1/2$, and 1 brane fields in the low frequency regime. We consider the emission of a brane-localized scalar field from rotating black holes in general space-time dimensions without relying on the low frequency expansions.

Figure 1

The grey-body factor for the brane scalar emission into the $\ell =0$ mode from the $D=5$ dimensional black hole.

Figure 2

The grey-body factors for the brane scalar emission into the $\ell =1$ modes from the $D=5$ dimensional black hole.

Figure 3

The grey-body factors for the brane scalar emission into the $\ell =2$ modes from the $D=5$ dimensional black hole.

Figure 4

Total power spectrum of the $D=5$ dimensional black hole. The covering curves correspond to the total power spectrum and the dotted ones to the contributions from the $\ell =m$ modes.

Figure 5

Total power spectrum of the $D=5$ dimensional black hole with $a_{*}=1.5$. The small concave curve denotes the contribution from the sum of other than $\ell =m$ modes.

Figure 6

Total power spectrum for a fixed number of space-time dimensions $D$ and varying rotation parameter $a_{*}$.

Figure 7

Total power spectrum for fixed rotation parameter $a_{*}$ and varying space-time dimensions $D$. (a)–(d) correspond to $a_{*}=0$, 0.5, 1.0, and 1.5, respectively.

Figure 8

Angular distribution for $D=5$ dimensional black hole.