Abstract
The concentrated mass at the Galactic center is considered as a gravitational lens that focuses gravitational-wave energy to the Earth. It is found that 60 Hz gravitational waves from a rotating neutron star outside our Galaxy are focused onto a region having an approximate radius of 1.1×1011 m (assuming that the concentrated mass has the form of a supermassive black hole). The increase in intensity (which is proportional to the square of the increase in strain amplitude h) is by a factor of approximately 17,000. Sources within our Galaxy lead to increases in intensity by a factor that can exceed 4000.
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