Shadow of Kerr-Taub-NUT black hole

Understand

The shadow of a rotating black hole with nonvanishing gravitomagnetic charge has been studied.

• It was shown that in addition to the angular momentum of black hole the gravitomagnetic charge term deforms the shape of the black hole shadow.
• From the numerical results we have obtained that for a given value of the rotation parameter, the presence of a gravitomagnetic charge enlarges the shadow and reduces its deformation with respect to the spacetime without gravitomagnetic charge.
• Finally we have studied the capture cross section for massive particles by black hole with the nonvanishing gravitomagnetic charge.