Halzen Wins Nobel Physics Prize for IceCube Neutrino Work — SkimNews
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- Francis Halzen, a Belgian particle physicist at the University of Wisconsin-Madison, won the 2026 Nobel prize in physics for leading the IceCube neutrino observatory at the south pole
- The Nobel committee cited him "for decisive contributions to the IceCube neutrino observatory and the discovery of high-energy neutrinos of astrophysical origin," awarding 12m Swedish kronor (about £900,000)
- IceCube embedded thousands of basketball-sized light detectors into a cubic kilometre of glacial ice and made the first detection of high-energy extraterrestrial neutrinos in 2013, soon after it was switched on
- Halzen first proposed turning south pole ice into a neutrino observatory in 1988, and IceCube later identified the first cosmic source of the particles 3.7 billion light-years away
- Dr Patrick Dunne at Imperial College London said detecting astrophysical neutrinos "isn't overstating things to liken this to when Galileo first pointed a telescope at the stars," calling it a new observational lens
- Other neutrino experiments now in development include the Deep Underground Neutrino Experiment (Dune) in the US and the Hyper-Kamiokande detector in Japan
Why it matters: Halzen's IceCube opens neutrinos as a peer observational channel to light and gravitational waves, letting researchers probe cosmic events that electromagnetic radiation cannot reach. Dunne's Galileo comparison, drawn from the source, pegs the leap to the invention of telescopy, and the 12m-kronor prize formalizes neutrino astronomy as an established discipline.
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