Results 71 to 80 of about 178,649 (302)

MASER: A Science Ready Toolbox for Low Frequency Radio Astronomy

Data Science Journal, 2020
MASER (Measurements, Analysis, and Simulation of Emission in the Radio range) is a comprehensive infrastructure dedicated to time-dependent low frequency radio astronomy (up to about 50 MHz). The main radio sources observed in this spectral range are the
Baptiste Cecconi, Alan Loh, Pierre Le Sidaner, Renaud Savalle, Xavier Bonnin, Quynh Nhu Nguyen, Sonny Lion, Albert Shih, Stéphane Aicardi, Philippe Zarka, Corentin Louis, Andrée Coffre, Laurent Lamy, Laurent Denis, Jean-Mathias Grießmeier, Jeremy Faden, Chris Piker, Nicolas André, Vincent Génot, Stéphane Erard, Joseph N. Mafi, Todd A. King, Jim Sky, Markus Demleitner   +23 more
doaj   +1 more source

Atomic‐Scale Insights into Nanoparticle Exsolution at Dislocations in Dislocation‐Engineered Catalysts

Advanced Materials, EarlyView.
This study reveals an atomic‐level correlation between bulk dislocations and the exsolution of surface nanoparticles through a novel approach for dislocation engineering in epitaxial thin films. Employing in situ scanning transmission electron microscopy, two primary reasons for the frequent nucleation of dislocation‐associated nanoparticles are ...
Moritz Lukas Weber, Moritz Kindelmann, Dylan Jennings, Jan Hölschke, Regina Dittmann, Joachim Mayer, Wolfgang Rheinheimer, Xufei Fang, Felix Gunkel   +8 more
wiley   +1 more source

Statistically Stable Estimates of Variance in Radioastronomical Observations as Tools for RFI Mitigation

, 2010
A selection of statistically stable (robust) algorithms for data variance calculating has been made. Their properties have been analyzed via computer simulation.
Baan, Barnbaum, Briggs, David, Fisher, Hampel, Hettmansbperger, Huber, Kendal, Kesteven, Mitchell, P. A. Fridman, Poulsen, Rohlfs, Sheskin, Shurygin, Thompson, Thompson, Tukey, van der Waerden, Wilcox, Zhang   +21 more
core   +1 more source

Artificial Intelligence‐Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling

Advanced Materials, EarlyView.
AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll, Ivan Pinto‐Huguet, Enzo Rotunno, Thomas Galvani, Catalina Coll, Payam Habibzadeh Kavkani, Maria Chiara Spadaro, Yann‐Michel Niquet, Martin Børstad Eriksen, Sara Martí‐Sánchez, Georgios Katsaros, Giordano Scappucci, Peter Krogstrup, Giovanni Isella, Andreu Cabot, Gonzalo Merino, Pablo Ordejón, Stephan Roche, Vincenzo Grillo, Jordi Arbiol   +19 more
wiley   +1 more source

Spatial modifications of three-dimensional elliptic Gaussian beam scattered by two-dimensional periodic array.

Advanced Electromagnetics, 2012
The diffraction problem of a three-dimensional elliptic p- polarized Gaussian beam on an aperture array of rectangular holes is solved. The new algorithm for the solution of three-dimensional scattering problems of linearly polarized wave beams on two ...
A. Gribovsky, O. Yeliseyev
doaj   +1 more source

NP Stokes fields for radio astronomy

, 2010
The spin weighted spherical harmonic (SWSH) description of angular functions typically is associated with the Newman-Penrose (NP) null tetrad formalism.
Newman, Ezra T., Price, Richard H.
core   +1 more source

Radio Astronomy [PDF]

, 1981
Contains reports on research objectives and eight research projects.National Science Foundation (Grant AST79-25075)National Science Foundation (Grant AST79-20984)National Science Foundation (Grant AST79-19553)U.S.
Ali, Ali D. S., Barrett, Alan H., Baumann, William T., Bigelow, Timothy S., Burke, Bernard F., Jin, Jian-sheng, Johnson, Timothy L., Komichak, Michael J., Lang, Jeffrey H., Myers, Philip C., Rosenkranz, Philip W., Shao, Michael, Staelin, David H., Szabo, Bernard I., Toldalagi, Paul   +14 more
core   +1 more source

HZO/HSO Superlattice ReFET Array Integrating Optical Sensing for Neuromorphic Vision Computing

Advanced Materials, EarlyView.
A photonic ReFET array with an engineered HZO–HSO superlattice enables monolithic integration of optical sensing, nonvolatile memory, and synaptic computation. It exhibits forming‐free, >8‐bit analog states, >1010 endurance cycles, and light‐tunable conductance.
Bingjie Dang, Kaixuan Sun, Hanxin Su, Jiaxin Chen, Pengyu Yao, Tao Zeng, Shu Shi, Guowei Zhou, Liang Liu, Xiaohong Xu, Jingsheng Chen   +10 more
wiley   +1 more source

Spatially Encoded Polaritonic Ultra‐Strong Coupling in Gradient Metasurfaces with Epsilon‐Near‐Zero Modes

Advanced Materials, EarlyView.
Dielectric dual gradient metasurfaces supporting quasi‐bound‐states‐in‐the‐continuum are leveraged to spatially encode both the spectral and coupling parameter space and demonstrate ultra‐strong coupling to an epsilon‐near‐zero mode in an ultra‐thin SiO2 layer.The platform achieves exceptional mode overlap, reaching a normalized coupling strength of η =
Enrico Baù, Andreas Aigner, Jonas Biechteler, Connor Heimig, Thomas Weber, Thorsten Gölz, Stefan A. Maier, Andreas Tittl   +7 more
wiley   +1 more source

Stellar Radio Astronomy. Probing Stellar Atmospheres from Protostars to Giants

, 2002
Radio astronomy has provided evidence for the presence of ionized atmospheres around almost all classes of non-degenerate stars. Magnetically confined coronae dominate in the cool half of the Hertzsprung-Russell diagram.
Guedel, Manuel
core   +1 more source