Intersecting D-branes and black holes in type-0 string theory

We study intersecting D-branes in type-0 string theories and show that the Dp(+/-)-brane bound states obey similar intersecting rules as the Dp-branes of the type-II theories. The D5(+/-)-D1(+/-) brane system is studied in de tail. We show that the corresponding near-horizon geometry is the AdS(3) x S-3 x T-4 space and that there is no tachyon instability in this background . The Bekenstein-Hawking entropy is calculated. The worldvolume theory on t he D5(+/-)-D1(+/-) system is also studied. This theory contains both bosons and fermions and it is seen to arise as a projection of the supersymmetric gauge theory related to the D5-D1 system of the type-IIB theory. The Beken stein-Hawking entropy formula is reproduced exactly using the dual conforma l field theory.