Japanese scientists were able to prove that rare earth elements are made by looking at the spectra of light coming from neutron stars that were colliding.
For the first time, Japanese scientists have found evidence that rare earth elements are indeed made when two neutron stars merge. The Astrophysical Journal just published the specifics of the scientists' discoveries.
Many of the heavy atoms that make up our universe are created in the explosion that occurs when two neutron stars spiral inward and merge.
The first verified incidence of this process, GW 170817, occurred in 2017. Despite this, except for strontium, recognized in optical spectra, scientists have struggled to pinpoint the precise elements produced during neutron star mergers.
For reference, the gravitational wave (GW) signal known as GW 170817, which came from the shell elliptical galaxy NGC 4993, was detected by the LIGO and Virgo detectors on August 17, 2017.
A binary pair of neutron stars created the signal in their final moments of inspiral, which culminated in a merger. It is the first GW finding to be supported by non-gravitational methods.
A research team was led by Nanae Domoto, a graduate student at Tohoku University's Graduate School of Science and a research fellow at the Japan Society for the Promotion of Science (JSPS). They were trying to figure out what the spectra from neutron star mergers meant.
Rare earth elements are created during neutron star mergers, study confirms
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December 06, 2022
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