Based on the two recent detections, the research team estimates that one of these black hole-neutron star mergers happens about once a month within a billion light-years of Earth. The next observing run for the detectors, set to begin next summer, will aim to find more of these mergers. “We are also going after new types of sources, such as gravitational waves from a supernova exploding, and also a continuous stream of fainter gravitational waves coming from a spinning neutron star,” Scott said, which “will further help us to understand the nature of neutron star material.”


The first confirmed black hole-neutron star mergers have come, and they’re certainly not the last. The next observing run will hopefully reveal more of these remarkable pairings.

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