New record of the early active Sun

Mon, 07/30/2018 - 14:33 -- pheck
Dr. Kööp at work in the lab.

In an international study published in the peer-reviewed journal Nature Astronomy, postdoctoral scholar Levke Kööp and co-authors from Chicago and Zurich present a new record of the early active Sun. The Chicago team also includes the Field Museum's Robert A. Pritzker Associate Curator and UChicago Associate Professor (part-time) Philipp Heck, UChicago Professor and Field Museum Research Associate Andrew Davis and UChicago and Field Museum PhD student Jennika Greer.
The paper presents evidence for enhanced abundances of helium and neon isotopes that were produced in the mineral hibonite by spallation with solar energetic protons and alpha particles. The abundances can be best explained by a solar particle flux that was orders of magnitudes higher than it is today. The hibonites were extracted from one of the Field Museum's treasures, the Murchison meteorite, which fell in 1969 in Australia. Murchison is one of the most valuable meteorites to science.
The story was picked up by several news outlets, including the New York Times and Livescience. Read the original article at Nature Astronomy.

Dr. Levke Kööp separating hibonites from Murchison at the Robert A. Pritzker Center.