and 
Please join us Monday, July 14 for a talk from Cornell group visitor Heleen Mulder. Heleen is a PhD student working on theoretical particle physics with Jordy de Vries at Nikhef in Amsterdam and a member of the NLeEDM collaboration.
Abstract: For decades, scientists have pursued a bold goal: creating a laser that works not just with visible light but with powerful X-rays. Conventional X-ray sources, essential in medicine, security, and technology, are based on principles dating back to Röntgen’s discovery in 1895, essentially a brighter, more advanced X-ray light bulb. But just as lasers revolutionized the way we harness visible light, an X-ray laser would unlock extraordinary new capabilities in science and technology. The challenge?
Abstract: The evolution of plasma environments is defined and governed by balances between ionizing processes, chemical rearrangements, and neutralisation reactions such as mutual neutralisation (MN). Measuring and explaining these processes in detail is fundamental to understanding and modelling non-local thermal equilibrium environments, such as atmospheric plasmas.
There is a long-standing history of instrument makers grilling bratwursts for the whole building every summer. We will be continuing the tradition outside by the tower Thursday July 31st at noon. Remember to pack your appetites and join us in the great American pastime of eating hot dogs until we all feel ill!
Abstract: Galaxies are intimately connected to the environments they live in. The haloes around them contain the gas reservoir from which the galaxies grow, while galactic outflows heat and enrich this circumgalactic medium (CGM). The elemental abundances of present-day stars are, in part, set by these cosmic gas flows. Using zoom-in cosmological simulations of galaxies, I will discuss the physical and observable properties of gas and stars in and around galaxies.
Abstract: In the last several years, the combination of resolved event horizon scale images and large-scale computational models has led to new insights into black hole accretion. The main implication is that magnetic fields near the event horizon can become dynamically important, and I'll show that such a scenario provides a natural explanation for the high energy flares from our Galactic center black hole.