Results 31 to 40 of about 3,110,224 (422)

Near-Infrared Colours of Active Galactic Nuclei [PDF]

open access: yes, 2009
We propose near-infrared colour selection criteria to extract Active Galactic Nuclei (AGNs) using the near-infrared Colour-Colour Diagram (CCD) and predict near-infrared colour evolution with respect to redshift.
Kouzuma, Shinjirou, Yamaoka, Hitoshi
core   +1 more source

Infrared and Near-Infrared Spectroscopy of Acetylacetone and Hexafluoroacetylacetone [PDF]

open access: yesThe Journal of Physical Chemistry A, 2015
The infrared and near-infrared spectra of acetylacetone, acetylacetone-d8, and hexafluoroacetylacetone are characterized from experiment and computations at different levels. In the fundamental region, the intramolecular hydrogen bonded OH-stretching transition is clearly observed as a very broad band with substantial structure and located at ...
Henrik G. Kjaergaard   +7 more
openaire   +5 more sources

Silicon/2D-material photodetectors: from near-infrared to mid-infrared

open access: yesLight: Science & Applications, 2021
Two-dimensional materials (2DMs) have been used widely in constructing photodetectors (PDs) because of their advantages in flexible integration and ultrabroad operation wavelength range.
Chaoyue Liu   +7 more
semanticscholar   +1 more source

Spitzer Observations of Black Hole Low-mass X-ray Binaries: Assessing the Non-stellar Infrared Component [PDF]

open access: yes, 2010
We have combined ground-based optical and near-infrared data with Spitzer Space Telescope mid-infrared data for five black hole (BH) soft X-ray transients (SXTs) in order to determine the levels of near- and mid-infrared emission from sources other than ...
Gelino, Christopher R.   +2 more
core   +1 more source

Developments for collective Thomson scattering equipment with a sub-THz gyrotron in LHD [PDF]

open access: yesEPJ Web of Conferences, 2019
Plan of collective Thomson scattering (CTS) experiment for the Large Helical Device (LHD) in NIFS with a 303 GHz gyrotron is under way. Use of a sub-THz gyrotron expands the CTS-applicable region of plasma parameters.
Saito Teruo   +11 more
doaj   +1 more source

Dust in the inner regions of debris disks around A stars [PDF]

open access: yes, 2008
We present infrared interferometric observations of the inner regions of two A-star debris disks, beta Leo and zeta Lep, using the FLUOR instrument at the CHARA interferometer on both short (30 m) and long (>200 m) baselines.
A. Merand   +47 more
core   +3 more sources

Photonic slide rule with metasurfaces

open access: yesLight: Science & Applications, 2022
Metasurface-based photonic slide rule enables the simultaneous resolving of unknown photons’ wavelength and polarization state in mid-infrared.
Feilong Yu   +12 more
doaj   +1 more source

A Review of Methods for Ship Detection with Electro-Optical Images in Marine Environments

open access: yesJournal of Marine Science and Engineering, 2021
The ocean connects all continents and is an important space for human activities. Ship detection with electro-optical images has shown great potential due to the abundant imaging spectrum and, hence, strongly supports human activities in the ocean.
Liqian Wang   +9 more
doaj   +1 more source

INFRARED QCD [PDF]

open access: yesInternational Journal of Modern Physics E, 2009
We prove that Nambu–Jona-Lasinio model is an exact description of infrared Quantum ChromoDynamics (QCD) deriving it from QCD Lagrangian. The model we obtain is renormalizable and confining but, taking very small momenta fixes completely all the parameters of the Nambu–Jona-Lasinio model through those of QCD.
openaire   +3 more sources

High-Discrimination Circular Polarization Detection Based on Dielectric-Metal-Hybrid Chiral Metamirror Integrated Quantum Well Infrared Photodetectors

open access: yesSensors, 2022
Circular polarization detection enables a wide range of applications. With the miniaturization of optoelectronic systems, integrated circular polarization detectors with native sensitivity to the spin state of light have become highly sought after.
Jinyong Shen   +10 more
doaj   +1 more source

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