Linearized superhairs on multi-black hole backgrounds

It is shown that the linearized Rarita-Schwinger equation on a multi-black hole background of the Majumdar-Papapetrou class admits time-independent and regular non-gauge solutions that die off at infinity. The number of freely available real constants is supposed to be four, thus being independent of the number of black holes. As a consequence, the gravitino field seems to be uniquely determined by its supercharge. Moreover, each supercovariantly constant spinor corresponds to one gravitino solution. (Authors)