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What if I told you it was true? All of it.
The authors use measurements of heavy element abundances to study the history of how and when the Milky Way became enriched in heavy elements. Specifically, they are concerned with elements formed through slow and fast neutron capture.
Astronomers have known for a while that GRBs are sign-posts to galaxies which are forming lots of stars. But today’s paper used radio observations of the gas to connect that star formation to a recent merger.
The authors of today’s paper created simulated galaxies, for which true properties are known. They then used synthetic observations to compare the true answers to the values observers would expect to recover.