How to Hear Stellar Collisions More Clearly ⚡ экспресс
Original: "Binary neutron star mergers with SPHINCS_BSSN: temperature-dependent equations of state and damping of constraint violations"
An enhanced neutron star simulation slashed errors and turned up the heat.
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The collision of neutron stars is a gravitational orchestra, where each instrument is a property of ultra-dense matter. A new simulation has learned to "hear" temperature in it and cut errors by a factor of 10. It turns out that the main note after the impact shifts by 150 Hz depending on the star's inner recipe. Future detectors will be able to use this sound to figure out what the insides of such stars are made of.
🎯 A neutron star the size of a city weighs as much as the Sun, and a teaspoon of its matter outweighs all people on Earth combined.
🎬 In Carl Sagan's novel "Contact," an alien signal is hidden in the gravitational waves from a binary neutron star.