A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers ...

Quantum sensors have become important tools in low-energy particle physics. Michael Doser explores opportunities to exploit ...

The photoelectric effect, first explained in 1905, transformed our understanding of how light interacts with matter. When ...

Iron is one of the most abundant heavy elements in the universe. Its spectral features stand out in many astronomical spectra, especially in those of stars and galaxies. As a dominant emitter in many ...

This work establishes the ability of valence-to-core X-ray emission spectroscopy (XES) to serve as a direct probe of N2 bond activation. A systematic series of iron-N2 complexes has been ...

The identification of ligands in metalloorganic complexes is crucial for understanding many important biological and chemical systems. Nonresonant Kβ valence-to-core X-ray emission spectroscopy (XES) ...

Though this matter hasn’t been directly observed, it is essential for our models of the universe to remain consistent. Current theories suggest this elusive matter might reside in long, thread-like ...

Operando X-ray spectroscopy is a powerful tool for probing electrocatalyst dynamics—but intense X-ray exposure can distort ...

A new analysis of BL Lacertae by NASA’s Imaging X-ray Polarimetry Explorer sheds light on the emission mechanisms of active ...

Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.