Mysterious X-rays may be kilonova auroras from 2017’s neutron star merger

Zoom / Artist’s impression of two neutron stars merging into a black hole (hidden in a bright bulge in the center of the image). The merger produces opposing, high-energy streams of matter (blue) that heat up the material around the stars, emitting X-rays (reddish clouds).

NASA/CXC/M. White

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