EMISSION OF CHARGED-PARTICLES FROM 4-DIMENSIONAL AND 5-DIMENSIONAL BLACK-HOLES

Recently Das and Mathur found that the leading order Hawking emission rate of neutral scalars by near-extremal D = 5 black holes is exactly reproduced by a string theoretic model involving intersecting D-branes . We show that the agreement continues to hold for charged scalar emis sion. We further show that similar agreement can be obtained for a cla ss of near-extremal D = 4 black holes using a model inspired by M-theo ry. in this model, BPS-saturated D = 4 black holes with four charges a re realized in M-theory as 5-branes triply intersecting over a string. The low-energy excitations are signals traveling on the intersection string.