Results 71 to 80 of about 27,927 (266)

Galaxy Morphology Classification via Deep Semisupervised Learning with Limited Labeled Data

The Astrophysical Journal Supplement Series
Galaxy morphology classification plays a crucial role in understanding the structure and evolution of the Universe. With galaxy observation data growing exponentially, machine learning has become a core technology for this classification task.
Zhijian Luo, Jianzhen Chen, Zhu Chen, Shaohua Zhang, Liping Fu, Hubing Xiao, Chenggang Shu   +6 more
doaj   +1 more source

Big Universe, Big Data: Machine Learning and Image Analysis for Astronomy [PDF]

, 2017
Jan Kremer, Kristoffer Stensbo-Smidt, Fabian Gieseke, Kim Steenstrup Pedersen, Christian Igel   +4 more
openalex   +1 more source

Gravitational wave astronomy, data analysis and observation results from the gravitational wave telescope

, 2022
D. Chen, T. Sawada
openalex   +1 more source

Shapeshifting Nanocatalyst for CO2 Conversion

Advanced Materials, EarlyView.
A multi‐modal in situ characterization of Ag‐Cu nanoparticles during CO2 photoreduction sheds light on dynamic transformations occurring during reaction. The Cu(core)‐Ag(shell) nanoparticles present the Ag replacement by Cu atoms. Ag is trapped at the subsurface forming a Ag‐Cu‐O phase, and the nanoparticle spreads over the substrate.
Gustavo Zottis Girotto, Maximilian Jaugstetter, Dongwoo Kim, Lívia P. Matte, Tara P. Mishra, Mary Scott, Ruan M. Martins, André R. Muniz, Miquel Salmeron, Slavomir Nemsak, Fabiano Bernardi   +10 more
wiley   +1 more source

Dimensionally Resolved Nanostructures of an Atomically Precise and Optically Active 1D van der Waals Helix

Advanced Materials, EarlyView.
The ability to grow nanostructures based on inorganic helical crystals with long‐range order will enable a platform to realize physical states that arise from chirality. Herein, it is demonstrated that controlled vapor phase deposition of an atomically precise helical crystal, GaSI, into ultrathin 1D nanowires and quasi‐2D nanoribbons.
Kaitlyn G. Dold, Joni Spencer, Griffin M. Milligan, Sirisak Singsen, Zhe Wang, Marcus Marracci, Dmitri Leo Mesoza Cordova, Thanh N. Huynh, Kaleolani Ogura, Toshihiro Aoki, Xingxu Yan, Dmitry A. Fishman, Xiaoqing Pan, Ruqian Wu, Elizabeth M. Y. Lee, Maxx Q. Arguilla   +15 more
wiley   +1 more source

Analyzing One- and Two-bit Data to Reduce Memory Requirements for -statistic-based Gravitational Wave Searches

The Astrophysical Journal
Searches for continuous-wave gravitational radiation in data collected by modern long-baseline interferometers, such as the Laser Interferometer Gravitational-wave Observatory (LIGO), the Virgo interferometer, and the Kamioka Gravitational Wave Detector,
P. Clearwater, A. Melatos, S. Nepal, M. Bailes   +3 more
doaj   +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

Contour Analysis Tool: An Interactive Tool for Background and Morphology Analysis

The Astrophysical Journal
We introduce the Contour Analysis Tool (CAT), a Python toolkit aimed at identifying and analyzing structural elements in density maps. CAT employs various contouring techniques, including the lowest-closed contour, linear and logarithmic Otsu ...
Mark A. Hutchison, Christine M. Koepferl
doaj   +1 more source

Gravitational wave astrophysics, data analysis and multimessenger astronomy [PDF]

, 2015
Hyung Mok Lee, Eric-Olivier Le Bigot, Zhihui Du, Zhangxi Lin, Xiangyu Guo, Linqing Wen, Khun Sang Phukon, Vihan Pandey, Sukanta Bose, Xi-Long Fan, Martin Hendry, Hyung Mok Lee, Eric-Olivier Le Bigot, Zhihui Du, Zhangxi Lin, Xiangyu Guo, Linqing Wen, Khun Sang Phukon, Vihan Pandey, Sukanta Bose, Xi-Long Fan, Martin Hendry   +21 more
openalex   +1 more source

Research Data in Astronomy: Assessing its Impact and Visibility through a Bibliometric Analysis [PDF]

, 2022
Patricio Cortés Rodríguez, Denise Depoortere, Lucy Opazo-Calfin   +2 more
openalex   +1 more source