The supranova model for gamma-ray bursts (GRBs) has recently gained popularity. In this scenario the GRB occurs weeks to years after a supernova explosion, and is located inside a pulsar wind bubble (PWB). High energy protons from the PWB can interact with photons from the rich radiation field inside the PWB or collide with cold protons from the supernova remnant, producing pions which decay into approximately 10-10(3) TeV neutrinos. The predicted neutrino flux from the PWBs that host the GRBs should be easily detectable by planned 1 km(2) detectors.
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Science
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Institute of Astronomy, Katholieke Universiteit Leuven, 3001 Leuven, Belgium.
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In this work, we observe the supernova remnant with JWST spectroscopy, finding narrow infrared emission lines of argon and sulfur.
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Nature
June 2023
South-Western Institute For Astronomy Research, Yunnan University, Yunnan, China.
Article Synopsis
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Nature
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Mullard Space Science Laboratory, University College London, Dorking, UK.
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Science
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National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China.
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