1st-observed neutron star collision leads to breakthroughs by UC Berkeley University Astronomers
The observation of the explosive merger of two neutron stars has confirmed UC Berkeley researchers’ theories on the origin of precious metals, such as platinum, as well as previous theories regarding gravitational waves. The collision, which was later identified as a neutron star merger, was observed Aug. 17 by the Laser Interferometer Gravitational-Wave Observatory, or LIGO, in the United States and by the Virgo detector in Italy. This is the first time researchers have successfully detected the gravitational waves that result from a neutron star merger. “ Following the collision of the stars, neutron-rich matter (neutron star ‘guts’) were ejected from the merger site at velocities up to 30 percent the speed of light,” said Brian D. Metzger, a physics professor at Columbia University, in an email. “This hot debris synthesized heavy elements, such as gold, platinum and silver within seconds as it expanded into space.” Previously, physicists from UC Berkeley and Lawrence Be...