High-throughput computation of electric polarization in solids via Berry flux diagonalization

Posted by klaurent Berkeley

Kavli Affiliate: Jeffrey Neaton | Summary:Electric polarization in the absence of an externally applied electric field is a key property of polar materials, but the standard interpolation-based ab initio approach to compute polarization differences within the modern theory of polarization presents challenges for automated high-throughput calculations. Berry flux diagonalization [J. Bonini et. al, Phys. Rev. […]


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A Catalog of Galactic Atomic Hydrogen Position-Position-Velocity Filaments

Posted by klaurent Stanford

Kavli Affiliate: Susan Clark | Summary:We present a catalog of 3D Galactic HI filaments over 1/3 of the sky using Galactic Arecibo L-band Feed Array HI (GALFA-HI) data. The 3D filaments are defined to be linear HI features that are continuous in position-position-velocity (PPV) and are found with fil3d, an algorithm that expands on the […]


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Deep X-ray observation of NGC 3221: everything everywhere all at once

Posted by klaurent Stanford

Kavli Affiliate: Steven Allen | Summary:We present a comprehensive analysis of 475 ks (438 ks unpublished & 37 ks archival) XMM-Newton/EPIC-pn observation of a nearby, highly inclined, star-forming, luminous infrared galaxy NGC 3221 through spatial, temporal, and spectral information. We confirm the presence of a low-luminosity (presumably Compton-thick) AGN. The 0.4$-$12 keV luminosity and the […]


Continue.. Deep X-ray observation of NGC 3221: everything everywhere all at once