Lord of the Rings fans are familiar with the Eye of Sauron, but what about the cosmic version of the symbol? NASA’s James Webb Space Telescope found the best evidence yet for emission from a neutron star at the site of supernova remnant SN 1987A.
SN 1987A was a core-collapse supernova, which means the compacted remains at its core formed either a neutron star or a black hole. NASA used the Medium Resolution Spectrograph (MRS) mode of Webb’s MIRI (Mid-Infrared Instrument) to observe the remnant. Spectral analysis of the results provided a strong signal due to ionized argon from the center of the ejected material that surrounds the original site of SN 1987A.
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From theoretical models of SN 1987A, the 10-second burst of neutrinos observed just before the supernova implied that a neutron star or black hole was formed in the explosion. But we have not observed any compelling signature of such a newborn object from any supernova explosion. With this observatory, we have now found direct evidence for emission triggered by the newborn compact object, most likely a neutron star,” said Claes Fransson, Lead Author on this Study from Stockholm University.
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