Accepted ABSTRACT Large light deeection angles are produced in the strong gravitational eld regions around neutron stars and black holes. In the case of binary systems, part of the photons emitted from the companion star towards the collapsed object are expected to be deeected in the direction of the earth. Based on a semi-classical approach we calculate the characteristic time delays and frequ...

We present a veri cation algorithm for duration properties of real-time systems. While simple real-time properties constrain the total elapsed time between events, duration properties constrain the accumulated satisfaction time of state predicates. We formalize the concept of durations by introducing duration measures for timed automata. A duration measure assigns to each nite run of a timed au...