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What You Get When You Throw a Dead Star Against Another

14 Sep 2018, 15:29 UTC
What You Get When You Throw a Dead Star Against Another
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Antonio Bernardo is a first year PhD student in the University of São Paulo in Brazil, where he is part of the Compact Objects group. He is especially interested in the mergers of neutron stars and nucleosynthesis resulting from this kind of event. Outside the academy, he spends his time planning trips that will hardly happen, in the movies or hiking.

Title​:​ Origin of the heavy elements in binary neutron-star mergers from a gravitational-wave event
Authors​: ​Daniel Kasen​, Brian Metzger, Jennifer Barnes, Eliot Quataert, Enrico Ramirez-Ruiz
First author institution​: University of California, Berkeley

Status​: published in Nature, ​open access​

To understand the origin of elements in the universe is a very challenging quest. There is a myriad of phenomena responsible for the creation and annihilation of nuclei. The lightest elements were forged in the first minutes of the universe and constitute 98% of the matter in the cosmos; the heaviest atoms depend on the curiosity and ingenuity of scientists to be made and exist for less than seconds. Here we will see something in the middle, the nucleosynthesis of elements like gold and ​lanthanides​.A Little About Neutron CaptureThe cosmic origin of elements heavier than iron has long been a mystery. ...

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