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Clue to a 1,000-year-old astrophysical mystery Researchers identify rare electron-capture supernova that may help explain the development of Crab Nebula. August 4, 2021, 8:50 am A color composite of the electron-capture supernova 2018zd (the large white dot on the right) and the host starburst galaxy NGC 2146 (toward the left). Credit: NASA/STScI/J. DePasquale; Las Cumbres Observatory Researchers from Tel Aviv University and the University of Tokyo have identified a rare “electron-capture” supernova, and in the process, may have shed light on an astrophysical mystery dating back nearly 1,000 years. An electron-capture supernova occurs when a star eight to nine times the mass of the Earth’s sun explodes. A thermonuclear supernova occurs after the explosion of a white dwarf star that has gained matter in a binary star system. A core-collapse supernova occurs when a massive star runs out of nuclear fuel and its core collapses, creating a black hole or a neutron star.

United statesKoichi itagakiLas cumbresDaichi hiramatsuUniversity of californiaFaculty of exact sciencesUniversity of california santa barbaraUniversity of tokyoTel aviv universityExact sciencesYisrael hadariIair arcaviNature astronomyCalifornia santa barbaraLas cumbres observatoryHubble space