  A two-leg quenched random bond disordered antiferromagnetic spin$-1/2$
Heisenberg ladder system is investigated by means of stochastic series
expansion (SSE) quantum Monte Carlo (QMC) method. Thermal properties of the
uniform and staggered susceptibilities, the structure factor, the specific heat
and the spin gap are calculated over a large number of random realizations in a
wide range of disorder strength. According to our QMC simulation results, the
considered system has a special temperature point at which the specific heat
take the same value regardless of the strength of the disorder. Moreover, the
uniform susceptibility is shown to display the same character except for a
small difference in the location of the special point. Finally, the spin gap
values are found to decrease with increasing disorder parameter and the
smallest gap value found in this study is well above the weak coupling limit of
the clean case.
