AI Insight
Astronomers have discovered that collisions between neutron stars, previously identified only through brief gamma-ray bursts lasting under two seconds, may also produce X-ray flashes that persist for several minutes. A study published in Science Bulletin presents evidence linking these longer-duration X-ray emissions to neutron star mergers, potentially explaining the origin of previously mysterious cosmic flashes. This finding suggests that some neutron star collisions have been overlooked because scientists were only searching for the characteristic short gamma-ray signatures.
Why it matters
This discovery could significantly increase the number of detectable neutron star mergers, providing more opportunities to study these extreme cosmic events and their role in creating heavy elements. The identification of an additional signature for these collisions improves our ability to detect and understand some of the universe's most energetic phenomena.
Understand the Science
For decades, astronomers have identified collisions between two neutron stars through bursts of gamma rays that can disappear in less than two seconds. But some of these violent encounters may also reveal themselves through X-ray flashes lasting several minutes. A new study published in Science Bulletin provides evidence for this connection, suggesting that merging neutron stars could be hiding among cosmic flashes whose origins have remained uncertain.
Source: Astronomers link mysterious cosmic flashes to collisions of dead stars