SuperNova Early Warning System

The SuperNova Early Warning System (SNEWS) is a network of neutrino detectors designed to give early warning to astronomers in the event of a supernova in the Milky Way, our home galaxy, or in a nearby galaxy such as the Large Magellanic Cloud or the Canis Major Dwarf Galaxy.

As of March 2021^[update],^[1] SNEWS has not issued any supernova alerts. This is unsurprising, as supernovae appear to be rare: the most recent known supernova remnant in the Milky Way was around the turn of the 20th century, and the most recent Milky Way supernova confirmed to have been observed was Kepler's Supernova in 1604.

^ Kharusi, S. Al; BenZvi, S. Y.; Bobowski, J. S.; Bonivento, W.; Brdar, V.; Brunner, T.; Caden, E.; Clark, M.; Coleiro, A.; Colomer-Molla, M.; Crespo-Anadón, J. I.; Depoian, A.; Dornic, D.; Fischer, V.; Franco, D. (2021-03-15). "SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy". New Journal of Physics. 23 (3): 031201. arXiv:2011.00035. Bibcode:2021NJPh...23c1201A. doi:10.1088/1367-2630/abde33. ISSN 1367-2630.

[:0-1] Kharusi, S. Al; BenZvi, S. Y.; Bobowski, J. S.; Bonivento, W.; Brdar, V.; Brunner, T.; Caden, E.; Clark, M.; Coleiro, A.; Colomer-Molla, M.; Crespo-Anadón, J. I.; Depoian, A.; Dornic, D.; Fischer, V.; Franco, D. (2021-03-15). "SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy". New Journal of Physics. 23 (3): 031201. arXiv:2011.00035. Bibcode:2021NJPh...23c1201A. doi:10.1088/1367-2630/abde33. ISSN 1367-2630.

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