Tuning forks in space: a final pure "tone" may reveal interior of neutron stars
Tuning forks in space: a final pure "tone" may reveal interior of neutron stars FRANKFURT. Neutron stars , with a mass greater than that of the entire solar system confined within a nearly perfect sphere just a dozen kilometers in diameter, are among the most fascinating astrophysical objects known to humankind. Yet, the extreme conditions in their interiors make their composition and structure highly uncertain. The collision of two neutron stars, such as the one observed in 2017, provides a unique opportunity to uncover these mysteries . As binary neutron stars inspiral for millions of years, they emit gravitational waves, but the most intense emission occurs at and just milliseconds after the moment of merging. The post-merger remnant – a massive, rapidly rotating object formed by the collision – emits gravitational waves in a strong but narrow frequency range. This signal holds crucial information about the so-called " equation of state " of nuclear matter,...