Podcast Episode
Led by Dimitrios Skiathas, a graduate student at the University of Patras in Greece working at NASA's Goddard Space Flight Center, the team ran more than one hundred simulations on NASA's Pleiades supercomputer. Each simulation modelled two neutron stars, each containing 1.4 times our Sun's mass packed into a sphere just 24 kilometres across, during their final 7.7 milliseconds before merger.
Neutron stars possess magnetic fields up to ten trillion times stronger than a typical refrigerator magnet. These fields are so powerful they can transform gamma rays into electrons and their antimatter counterparts, positrons.
The findings could prove invaluable for coordinating observations between gravitational-wave detectors like LIGO and Virgo, and electromagnetic telescopes. The upcoming LISA space-based observatory, planned for launch in the 2030s, could detect these mergers at much earlier stages, giving ground-based telescopes time to point toward the action.
NASA Supercomputer Reveals Magnetic Chaos Before Neutron Stars Collide
January 30, 2026
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NASA scientists have used the Pleiades supercomputer to create over one hundred simulations showing how neutron star magnetospheres become wildly entangled in the final milliseconds before collision. The research identifies potential X-ray and gamma-ray signals that future observatories could detect, opening new possibilities for multi-messenger astronomy.
Simulating Cosmic Catastrophe
NASA researchers have unveiled groundbreaking supercomputer simulations that provide an unprecedented window into the violent magnetic interactions between neutron stars in their final moments before collision. The research, announced on 29 January 2026, offers scientists their most detailed view yet of how magnetospheres behave as these city-sized stellar remnants spiral toward destruction.Led by Dimitrios Skiathas, a graduate student at the University of Patras in Greece working at NASA's Goddard Space Flight Center, the team ran more than one hundred simulations on NASA's Pleiades supercomputer. Each simulation modelled two neutron stars, each containing 1.4 times our Sun's mass packed into a sphere just 24 kilometres across, during their final 7.7 milliseconds before merger.
A Constantly Rewiring Magnetic Circuit
The simulations revealed that the magnetospheres surrounding these stellar corpses behave like magnetic circuits that continuously rewire themselves. Field lines connect, break apart, and reconnect whilst electrical currents surge through plasma travelling at nearly the speed of light.Neutron stars possess magnetic fields up to ten trillion times stronger than a typical refrigerator magnet. These fields are so powerful they can transform gamma rays into electrons and their antimatter counterparts, positrons.
Signals for the Next Generation
Crucially, the research identified electromagnetic signals that could serve as early warning signs before the main collision event. Whilst the highest-energy gamma rays cannot escape the system because they quickly convert to particles, lower-energy gamma rays and X-rays can exit and potentially be detected by future observatories.The findings could prove invaluable for coordinating observations between gravitational-wave detectors like LIGO and Virgo, and electromagnetic telescopes. The upcoming LISA space-based observatory, planned for launch in the 2030s, could detect these mergers at much earlier stages, giving ground-based telescopes time to point toward the action.
Published January 30, 2026 at 6:14pm
