New research reveals insights into supernovae and X-ray bursts

New research published in Physical Review Letters provides significant insights into cosmic explosions, specifically supernovae and X-ray bursts.

Researchers from the University of Surrey, in collaboration with Argonne National Laboratory, have successfully measured the nuclear reaction rate that determines the production of titanium-44 during supernova explosions. This radioactive isotope serves as a detectable footprint for space telescopes. The study revealed that the reaction occurs much slower than previously assumed, suggesting that the amount of titanium-44 produced in these explosions may be up to 35 percent higher than earlier models predicted. This finding allows astronomers to better align computer models with real-world observational data.

A second study focused on Type I X-ray bursts, which are frequent energetic flashes occurring when a neutron star pulls matter from a companion star, triggering repeated thermonuclear reactions.