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Mixing neutrinos of colliding neutron stars changes how merger unfolds

Researchers found that neutrino flavor transformations alter the composition and signals of what's left after a neutron star collision, impacting the creation of heavy metals and rare earth elements. The simulations also influenced the matter ejected from the merger and electromagnetic emissions detectable from Earth.

SourcePenn State·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateSep 19, 2025

UZH device searches for light dark matter

Scientists have developed a new device to probe the existence of dark matter particles across a wide mass range below one mega electron volt. The QROCODILE experiment uses an improved superconducting nanowire single-photon detector to detect changes in direction, which can help filter out non-dark-matter events.

SourceUniversity of Zurich·JournalPhysical Review Letters·TypeExperimental study·DateSep 8, 2025

What happens when neutron stars collide?

New simulations show that neutrinos created during neutron star collisions can be trapped at the interface of merging stars and interact with matter for 2-3 milliseconds. This brief out-of-equilibrium phase is crucial in understanding the physics of these extreme events.

SourcePenn State·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateJun 18, 2024

Astrophysicists prove neutrinos originate from Blazars

A team of scientists led by Clemson University's Marco Ajello has provided conclusive evidence that astrophysical neutrinos come from blazars, which are powerful black holes. This breakthrough resolves the long-standing question about the origin of high-energy cosmic rays.

SourceClemson University·JournalThe Astrophysical Journal Letters·TypeData/statistical analysis·DateJul 14, 2022