X-ray performance of critical-angle transmission grating prototypes for the Arcus mission

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Ralf K. Heilmann, Alexander R. Bruccoleri, Vadim Burwitz, Casey deRoo, Alan Garner | Summary: Arcus is a proposed soft x-ray grating spectrometer Explorer. It aims to explore cosmic feedback by mapping hot gases within and between galaxies and galaxy clusters and characterizing jets and winds from […]


Continue.. X-ray performance of critical-angle transmission grating prototypes for the Arcus mission

X-ray performance of critical-angle transmission grating prototypes for the Arcus mission

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Ralf K. Heilmann, Alexander R. Bruccoleri, Vadim Burwitz, Casey deRoo, Alan Garner | Summary: Arcus is a proposed soft x-ray grating spectrometer Explorer. It aims to explore cosmic feedback by mapping hot gases within and between galaxies and galaxy clusters and characterizing jets and winds from […]


Continue.. X-ray performance of critical-angle transmission grating prototypes for the Arcus mission

Conformally-rescaled Schwarzschild metrics do not predict flat galaxy rotation curves

Kavli Affiliate: Anthony Lasenby | First 5 Authors: Michael Hobson, Anthony Lasenby, , , | Summary: For conformally invariant gravity theories defined on Riemannian spacetime and having the Schwarzschild–de-Sitter (SdS) metric as a solution in the Einstein gauge, we consider whether one may conformally rescale this solution to obtain flat rotation curves, such as those […]


Continue.. Conformally-rescaled Schwarzschild metrics do not predict flat galaxy rotation curves

Sustained unidirectional rotation of a self-organized DNA rotor on a nanopore

Kavli Affiliate: Cees Dekker | First 5 Authors: Xin Shi, Anna-Katharina Pumm, Jonas Isensee, Wenxuan Zhao, Daniel Verschueren | Summary: Flow-driven rotary motors drive functional processes in human society such as windmills and water wheels. Although examples of such rotary motors also feature prominently in cell biology, their synthetic construction at the nanoscale has thus […]


Continue.. Sustained unidirectional rotation of a self-organized DNA rotor on a nanopore

Sustained unidirectional rotation of a self-organized DNA rotor on a nanopore

Kavli Affiliate: Cees Dekker | First 5 Authors: Xin Shi, Anna-Katharina Pumm, Jonas Isensee, Wenxuan Zhao, Daniel Verschueren | Summary: Flow-driven rotary motors drive functional processes in human society such as windmills and water wheels. Although examples of such rotary motors also feature prominently in cell biology, their synthetic construction at the nanoscale has thus […]


Continue.. Sustained unidirectional rotation of a self-organized DNA rotor on a nanopore

A DNA turbine powered by a transmembrane potential across a nanopore

Kavli Affiliate: Cees Dekker | First 5 Authors: Xin Shi, Anna-Katharina Pumm, Christopher Maffeo, Fabian Kohler, Elija Feigl | Summary: Rotary motors play key roles in energy transduction, from macroscale windmills to nanoscale turbines such as ATP synthase in cells. Despite our capabilities to construct engines at many scales, developing functional synthetic turbines at the […]


Continue.. A DNA turbine powered by a transmembrane potential across a nanopore

Global Reduction in Ship-tracks from Sulfur Regulations for Shipping Fuel

Kavli Affiliate: Robert Wood | First 5 Authors: Tianle Yuan, Hua Song, Robert Wood, Chenxi Wang, Lazaros Oreopoulos | Summary: Ship-tracks are produced by ship-emitted aerosols interacting with marine low clouds. Here we apply deep learning models on satellite data to produce the first multi-year global climatology map of ship-tracks. We show that ship-tracks are […]


Continue.. Global Reduction in Ship-tracks from Sulfur Regulations for Shipping Fuel

TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

Kavli Affiliate: Michael Fausnaugh | First 5 Authors: Jason T. Hinkle, Christopher S. Kochanek, Benjamin J. Shappee, Patrick J. Vallely, Katie Auchettl | Summary: We analyze high-cadence data from the Transiting Exoplanet Survey Satellite (TESS) of the ambiguous nuclear transient (ANT) ASASSN-18el. The optical changing-look phenomenon in ASASSN-18el has been argued to be due to […]


Continue.. TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el

The Mysterious Affair of the H$_2$ in AU Mic

Kavli Affiliate: Gregory Herczeg | First 5 Authors: Laura Flagg, Christopher Johns-Krull, Kevin France, Gregory Herczeg, Joan Najita | Summary: Molecular hydrogen is the most abundant molecule in the Galaxy and plays important roles for planets, their circumstellar environments, and many of their host stars. We have confirmed the presence of molecular hydrogen in the […]


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Nested sampling for physical scientists

Kavli Affiliate: Anthony Lasenby | First 5 Authors: Greg Ashton, Noam Bernstein, Johannes Buchner, Xi Chen, Gábor Csányi | Summary: We review Skilling’s nested sampling (NS) algorithm for Bayesian inference and more broadly multi-dimensional integration. After recapitulating the principles of NS, we survey developments in implementing efficient NS algorithms in practice in high-dimensions, including methods […]


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