Rather than originating from within a distant source, the neutrino parent of an extremely high-energy muon detected in 2023 may have arisen from the interaction of a cosmic ray and the cosmic background radiation.
A novel source detection framework employing neural networks resulted in a 27% increase in the number of detected sources compared to existing pipelines when applied to simulated data.
Tackling the question of how electrons are accelerated to high energies in solar flares, researchers find that no one mechanism is solely responsible; instead, a variety of mechanisms work in concert.
Simulations suggests that the outer regions of neutrino-cooled disks could be a potential birthplace for neutron stars with masses of 0.01–1.0 solar mass — a population otherwise difficult to form through core collapse.
The known planets in the Gaia-4 and Gaia-5 systems mostly exclude the possibility of planets in the habitable zones of these stars; giant planets on eccentric orbits may disrupt other planets via a “wrecking ball” mechanism.
Modeling shows how Apophis’s response to a cloud encounter with Earth depends on the object’s particle size distribution, particle shapes, packing configurations, and interior structure.