Microtextures in the Chelyabinsk impact breccia reveal the history of Phosphorus-Olivine-Assemblages in chondrites

Posted by klaurent Caltech

Kavli Affiliate: Paul D. Asimow | Summary:The geochemistry and textural associations of chondritic phosphate minerals can provide insights into the geological histories of parental asteroids, but the processes governing their formation and deformation remain poorly constrained. Here, we present a quantitative assessment of phosphorus-bearing mineral textures in the three variously-shocked lithologies (light, dark, and melt) […]


Continue.. Microtextures in the Chelyabinsk impact breccia reveal the history of Phosphorus-Olivine-Assemblages in chondrites

Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated Above Ground

Posted by klaurent Stanford

Kavli Affiliate: Paul Brink | Summary:We present limits on spin-independent dark matter-nucleon interactions using a $10.6$ $mathrmg$ Si athermal phonon detector with a baseline energy resolution of $σ_E=3.86 pm 0.04$ $(mathrmstat.)^+0.19_-0.00$ $(mathrmsyst.)$ $mathrmeV$. This exclusion analysis sets the most stringent dark matter-nucleon scattering cross-section limits achieved by a cryogenic detector for dark matter particle masses […]


Continue.. Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated Above Ground