The merger triggered an explosion called a kilonova.
ceases. This causes a vast amount of this material to rush inward to create and feed a newborn black hole and the violent event marked by a supernova.
At first, researchers hadn't suspected anything unusual about the 50-second GRB 211211A or anything that could change these origin theories. At 1.1 billion light-years from, the long GRB was relatively close for such an event, allowing the team to study it with a range of telescopes and across various wavelengths of light.
In this case, the red prevailed and bluer colors faded more quickly."This color evolution is a telltale signature of a kilonova, and kilonovae can only come from neutron star mergers," Fong said. Now that astronomers have a better idea of what to look for, Nugent thinks the findings should change the types of galaxies astronomers watch when searching for nearby kilonovas.
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