During the collision of binary neutron stars, hot neutrinos can briefly become trapped at the interface, staying out of equilibrium with the cold cores of the merging stars for 2 to 3 milliseconds. This interaction helps drive the particles toward equilibrium and offers fresh insights into the physics of such mergers. Credit: SciTechDaily.comcollisions are briefly out of thermodynamic equilibrium with the cold cores of the merging stars.
Volume rendering of density in a simulation of a binary neutron star merger. New research shows that neutrinos created in the hot interface between the merging stars can be briefly trapped and remain out of equilibrium with the cold cores of the merging stars for 2 to 3 milliseconds.
“These extreme events stretch the bounds of our understanding of physics and studying them allows us to learn new things,” Radice said. “The period where the merging stars are out of equilibrium is only 2 to 3 milliseconds, but like temperature, time is relative here, the orbital period of the two stars before the merge can be as little as 1 millisecond.
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