James Webb Data Points to Neutron Star in 168,000-Light-Year-Old SN 1987A Remnant
Updated
Updated · spacedaily.com · May 29
James Webb Data Points to Neutron Star in 168,000-Light-Year-Old SN 1987A Remnant
2 articles · Updated · spacedaily.com · May 29
Summary
Science results led by Claes Fransson found ionized argon and sulfur near SN 1987A’s center, the strongest evidence yet that the 1987 explosion left behind a neutron star.
James Webb observations showed those elements require a high-energy radiation source; the team says a newly formed neutron star best explains the ionization pattern, though Webb has not directly imaged it.
SN 1987A, the closest observed supernova since the telescope’s invention, already produced a roughly 13-second neutrino burst seen by three detectors in 1987, matching core-collapse models that predicted a neutron-star remnant.
The compact object had eluded detection for decades, making its absence a long-running puzzle; as the remnant expands and debris thins, Webb and ground-based follow-up should sharpen the picture.
The 1987 supernova mystery is solved. How are new space detectors preparing for the next star to explode in our galaxy?
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Direct Detection of a Neutron Star in Supernova 1987A by JWST Resolves Decades-Old Mystery
Overview
Supernova 1987A, first seen in 1987 and the closest supernova to Earth in centuries, gave astronomers a rare chance to study a massive star’s explosive death. For decades, the fate of its core was a mystery—did it become a neutron star or a black hole? Years of indirect evidence pointed to a neutron star, but only recently did the James Webb Space Telescope provide the first direct proof of a neutron star at the heart of SN 1987A. This breakthrough finally solves a long-standing question in astrophysics and deepens our understanding of how massive stars end their lives.