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A physically-motivated perspective of Fanaroff–Riley classification of radio galaxies
A small subset of extragalactic double radio sources, termed HYbrid MOrpholgy Radio Sources (HYMORS), is distinguished by a very unusual, hybrid...
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Cathode Spot Motion in a Transverse and in an Oblique Magnetic Field
Different aspects of experimental investigation of cathode spot motion in a vacuum arc under transverse- and oblique-oriented magnetic fields will be...
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Bending optical soliton-induced waveguide channels in a photorefractive LiNbO3 crystal
The bending bright spatial optical soliton generation in a photorefractive Fe-doped lithium niobate (LN:Fe) crystal controlled by pyroelectric effect...
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Scattering imaging of biomolecules with metallic nanoparticles: localization precision, imaging speed, and multicolor imaging capability
Metallic nanoparticles, especially gold nanoparticles (AuNPs), have been widely used as bright optical probes for the observation and analysis of...
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Random-access wide-field mesoscopy for centimetre-scale imaging of biodynamics with subcellular resolution
Benefitting from the advantages of high imaging throughput and low cost, wide-field microscopy has become indispensable in biomedical studies....
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Creating and moving nanoantenna cold spots anywhere
Cold spots are sub-wavelength regions which might emerge near a nanoantenna, should one or more components of some far-field illumination cancel out...
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Temporal and Periodic Analysis of Penumbra–Umbra Ratio for the Last Four Solar Cycles
We investigate the long-term dynamic behavior of the sunspot penumbra to umbra area ratio by analyzing the Debrecen Photoheliographic Data (DPD) of...
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Coherence and superradiance from a plasma-based quasiparticle accelerator
Coherent light sources, such as free-electron lasers, provide bright beams for studies in biology, chemistry and physics. However, increasing the...
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MLS120126:042313+212951—A New Eclipsing Cataclysmic Variable in the Period Gap
AbstractWe have analyzed our photometric and spectroscopic observations of the new eclipsing cataclysmic variable MLS120126:042313+212951. We have...
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IRIS Observational Approach to the Oscillatory and Damping Nature of Network and Internetwork Chromosphere Small-Scale Brightening (SSBs) and Their Unusual Dynamical and Morphological Differences in Different Regions on the Solar Disk
One of the most exciting benefits of solar small-scale brightening is their oscillations. This study investigated the properties of small-scale...
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Analysis of the Evolution of a Multi-Ribbon Flare and Failed Filament Eruption
How filaments form and erupt are topics about which solar researchers have wondered for more than a century and they are still open to debate. We...
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Measuring \(H_0\) with H \(_2\) O Megamasers
Observations of 22 GHz circumnuclear water vapor megamasers in the accretion disks of low-z active galactic nuclei contribute to the measurement of...
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Colorless poly(vinyl pyrrolidone) hydrogel contact lenses synergized with silver nanoparticles
Biocompatible polymers such as poly(vinyl pyrrolidone) (PVP) are used to prepare hydrogels for biomedical applications, optical applications,...
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Scribing of surface-braided CFRP with picosecond laser: Thermal damage formation and removal mechanism analysis
In the pursuit of mitigating or eradicating thermal damage defects during laser processing of carbon fiber-reinforced polymers (CFRP), the...
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Development of an M6.4 Circular Solar Flare According to the Observations in the Нα Line
AbstractThe development of the 3N/M6.4 flare on July 19, 2000, in the active region NOAA 9087 was studied based on the analysis of its images in the Н
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Cosmological Distance Scale. Part 16: Hubble Dipole
The paper considers significant cosmological events that occurred in 2007: the reason for discrepancies in Hubble constant estimates was established;...
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Holographic images of an AdS black hole within the framework of f(R) gravity theory
Based on the AdS/CFT correspondence, this study employs an oscillating Gaussian source to numerically study the holographic images of an AdS black...
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Marine Binoculars
On the hot, sunny afternoon of August 8 2022, our family took a boat trip around Ramsey Island, off the Pembrokeshire coast, Wales. It was not my...
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Design of Optical System for Laser Dazzle Simulation Human Eye Test Target
Aiming at the characteristics of laser dazzling scenes, a simulated human eye target optical system that can test dazzling spots is designed. The...
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Propagation characteristics of hollow flat-topped Gaussian beam and its application in generating optical cage
The hollow flat-topped Gaussian beam (HFTGB) is proposed to describe the flat light ring beams. The analytical formula for the propagation of HFTGB...
