  Necessary conditions for various algebraic types of the Weyl tensor are
determined. These conditions are then used to find Weyl aligned null directions
for the black ring solution. It is shown that the black ring solution is
algebraically special, of type I_i, while locally on the horizon the type is
II. One exceptional subclass - the Myers-Perry solution - is of type D.

General Relativity and Quantum Cosmology;High Energy Physics - Theory