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How a Neutron Star Cooled Off in Just Four Days ⚡ экспресс

Original: "Evidence of Nuclear Urca Process in the Ocean of Neutron-Star Superburst MAXI J1752$$-$$457"
arXiv:2602.19018 · 2026-02-22 · CC BY 4.0 · ⏱ 1 min · High Energy Nuclear Experiment Nuclear Theory
The ultra-fast cooling of a neutron star pointed to the nuclear 'Urca process' — an invisible draft of neutrinos whisks away heat five times faster.
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After an explosion on a neutron star, it cooled down five times faster than usual. The reason: a nuclear 'dance' of particles in its ocean, giving birth to neutrinos. This invisible 'draft' carries away heat like steam from a pot. Now astrophysicists can listen to the 'pulse' of cooling stars to understand what they are made of.

🎯 The name 'Urca' was coined in a casino: physicists George Gamow and Mario Schönberg joked that neutrinos carry away energy as relentlessly as a croupier takes chips.

Scientists
Charles-Augustin de CoulombJames Clerk MaxwellEnrico FermiPaul DiracJohannes RydbergTheodore Lyman
Tags
neutron star hydrogen helium
Laws
Coulomb's lawFermi–Dirac statisticsRydberg formulaChandrasekhar limitBalmer formulatriple-alpha process (Hoyle process)
Original: arXiv:2602.19018 · CC BY 4.0 · bridge42worlds