Results 81 to 90 of about 132,038 (243)

Radio Galaxy Classification: #Tags, Not Boxes

Galaxies, 2021
After six decades of studying radio galaxies, we are now delightfully overwhelmed by their exponentially expanding numbers and the complexity of their structures.
Lawrence Rudnick
doaj   +1 more source

On dynamical models for radio galaxies [PDF]

New Astronomy Reviews, 2002
The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources divide into two clear categories based on their radio morphology.
Frazer N. Owen, T. Markovic, P. Hardee, M. J. Ledlow, Jean A. Eilek   +4 more
openaire   +3 more sources

Multifunctional Chiral Halide Perovskites: Advancing Chiro‐Optics, Chiro‐Optoelectronics, and Spintronics

Advanced Science, EarlyView.
This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley   +1 more source

The host galaxies of Compact Steep Spectrum and Gigahertz-Peaked Spectrum radio sources

, 2008
I will review some of the developments in studies of the host galaxy properties of Compact Steep Spectrum (CSS) and GigaHertz-Peaked Spectrum (GPS) radio sources.
Axon, Batcheldor, Best, de Vries, de Vries, de Vries, de Vries, de Vries, Dickson, Fabian, Fanti, Fanti, Fanti, Gelderman, Heckman, Holt, Holt, Holt, Holt, Inskip, Labiano, Labiano, Lily, Morganti, Morganti, Morganti, Murgia, O'Dea, O'Dea, O'Dea, Orienti, Owsianik, Privon, Rodríguez Zaurín, Siemiginowska, Silk, Smith, Snellen, Snellen, Snellen, Stanghellini, Stanghellini, Tadhunter, Tadhunter, Tadhunter, Wills   +45 more
core   +1 more source

Observation of Radio Galaxies with HAWC [PDF]

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017
The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is an extensive air shower array located in Puebla, Mexico. The closest radio galaxy within the HAWC field of view, M87, has been detected in very high energies. In this work we report upper limits on the TeV -ray flux of the radio galaxy M87.
Daniel Avila, Nissim Fraija, Ruben Alfaro, Marc Klinger, Maria Magdalena González, Antonio Galván   +5 more
openaire   +3 more sources

Parametric Design of Continuum Robots Using Interlocking Ball Joints

Advanced Intelligent Systems, EarlyView.
Herein, a parametric design methodology is introduced for producing a wide variety of modular ball joint‐based continuum robots. It is demonstrate by designing a magnetically actuated continuum robot for cardiac ablations. The methodology is released as an open‐source computer‐assisted design extension that automatically designs continuum robots based ...
Alexandre Mesot, Quentin Boehler, Florian Heemeyer, Sean Lyttle, Buse Aktaş, Bradley J. Nelson   +5 more
wiley   +1 more source

Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics

The Astrophysical Journal Supplement Series
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging.
Kyle Finner, M. James Jee, Hyejeon Cho, Kim HyeongHan, Wonki Lee, Reinout J. van Weeren, David Wittman, Mijin Yoon   +7 more
doaj   +1 more source

LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift [PDF]

, 2015
Remnant radio galaxies represent the final dying phase of radio galaxy evolution, in which the jets are no longer active. Due to their rarity in flux limited samples and the difficulty of identification, this dying phase remains poorly understood and the
Best, P. N., Brienza, M., Brüggen, M., Godfrey, L., Harwood, J. J., Jamrozy, M., Jarvis, M. J., Maddox, N., Mahony, E. K., McKean, J., Morganti, R., Murgia, M., Orru, E., Röttgering, H. J. A., Shulevski, A., Vilchez, N.   +15 more
core   +7 more sources

Multitarget Recognition of Flower Images Based on Lightweight Deep Neural Network and Transfer Learning

Advanced Intelligent Systems, EarlyView.
This article proposes a lightweight YOLOv4‐based detection model using MobileNetV3 or CSPDarknet53_tiny, achieving 30+ FPS and higher mAP. It also presents a ShuffleNet‐based classification model with transfer learning and GAN‐augmented images, improving generalization and accuracy.
Qingyang Liu, Yanrong Hu, Hongjiu Liu
wiley   +1 more source

Weak-lensing Analysis of the Complex Cluster Merger A746 with Subaru/Hyper Suprime-Cam

The Astrophysical Journal
The galaxy cluster A746 ( z = 0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system.
K. HyeongHan, H. Cho, M. James Jee, D. Wittman, S. Cha, W. Lee, K. Finner, K. Rajpurohit, M. Brüggen, W. Forman, C. Jones, R. van Weeren, A. Botteon, L. Lovisari, A. Stroe, P. Domínguez-Fernández, E. O’Sullivan, J. Vrtilek   +17 more
doaj   +1 more source