New simulations examine the prospect of forming heavy elements via rapid capture of neutrons in the hot outflows of proton-neutron stars that form after a supernova explosion or neutron star merger.
The globular cluster that houses a repeating fast radio burst may have a moderately high stellar encounter rate, which allows the possibility that the burst source formed dynamically but does not rule out other possibilities.
The upcoming survey to be conducted with the Rubin Observatory will detect between 0 and 70 interstellar asteroids each year, calculations suggest.
A substantial fraction of Type II supernovae arise from stars in binary systems, and studying the surrounding population of stars is a powerful way to gauge the likely age and mass of a supernova progenitor star.
A new look at how waves are generated in weakly ionized plasmas suggests that substantial wave flux can be generated even if the way of generating the waves acts only on the few charged particles in the plasma.
“Bare” active galactic nuclei — accreting supermassive black holes with spectra uncomplicated by absorption features — have an unexplained excess of soft (low-energy) X-ray emission.