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Absorption Line Survey of H+3 Towards the Galactic Center
We have conducted high-resolution (R = 20,000) spectroscopy toward sources in the Galactic center in search of absorption lines of H+3. The...
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Molecular Hydrogen Absorption Line Detected in Dense Molecular Clouds
The H2 ν=0–1 S(0) absorption line was detected together with CO ν=0–2 toward NGC 7538 IRS1 using IRCS at Subaru Telescope. The H2/CO ratio are...
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Water Molecule Absorption Line Intensities in the IR Spectral Region
AbstractH 2 O absorption lines broadened by air pressure were recorded at an IFS 125HR Fourier spectrometer in the 3000–7500 cm −1 spectral region. The...
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Modeling of Absorption in the Hα Line for the Exoplanet WASP-52b
AbstractThe results of modeling the Hα absorption spectrum of the atmosphere of the hot Jupiter WASP‑52b are presented. The atmosphere was modeled...
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Character of the Change in the Voigt Contour of a Weak Absorption Line in a Laser Spectrometer with an Analytical Cavity
The variation in the shape of the Voigt convolution profile in a spectrometer for measuring weak absorption consisting of a frequency tunable laser...
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Absorption Spectrum of Pure H2S in the 6227.506–6236.844 and 6244.188–6245.348 cm−1 Ranges: Absorption Line Positions and Intensities, Self-Broadening and Self-Shift Coefficients
AbstractThe absorption spectrum of the H 2 S molecule is recorded with high spectral resolution (0.00016 cm −1 ) and threshold sensitivity (∼1E-26...
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Spectral Line with Continuous Absorption
Spectral lines are in general embedded in a continuous background created by photoionizations and recombinations, and free-free emission. In cool...
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Calculation of the Absorption Coefficient of Ar-Broadened CO2 in the 4.3 μm Band Wing on the Basis of Asymptotic Line Wing Theory
Abstract —Carbon dioxide absorption broadened by argon is studied on the basis of the asymptotic line wing theory. The line shape parameters concerned...
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Impact of Updating Information on the Atmospheric Gas Absorption Line Parameters on the Results of Simulations of IR Radiative Fluxes in the Atmosphere
Abstract —The impact of uncertainties of the atmospheric gas absorption line parameters in the modern spectroscopic databases on the simulation of...
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Mixed line broadening in the saturable absorption of erbium-doped fiber
Measuring the absorption coefficient and analyzing the saturable absorption property of erbium-doped fiber (EDF) of different lengths at different...
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Double Radio-Optical Resonance in the Hanle Configuration under the Excitation of the D1 Absorption Line in Alkali Metal Atoms
AbstractThe absorption of a light wave interacting with optical transitions in the D 1 line of an alkali metal atom subjected to microwave radiation...
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Investigations of Atomic Transitions of the D2 Line of Potassium in Strong Magnetic Fields Using Saturated Absorption Technique in a Microcell
AbstractAtomic transitions of 39 K, D 2 line are studied in strong longitudinal magnetic fields, up to 1000 G, with a high spectral resolution. The...
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Improved laser absorption spectroscopy measurements of flame temperature via a collisional line-mixing model for CO2 spectra near 4.17 µm
An experimental and theoretical study of CO 2 absorption spectroscopy near 4.172 μm was conducted to acquire measurements of gas temperature and CO 2 ...
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Beta Absorption Experiments with Geiger Counters
The absorption of electrons emitted by a beta radioactive source through different materials may be investigated by means of a Geiger counter....
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Total Absorption Gamma Spectroscopy Basics
In this chapter the basic concepts of the total absorption gamma spectroscopy technique are introduced. Following the introduction, a brief...
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The Influence of Resonant Absorption on the Fe Emission Line Profiles of Accreting Black Holes
Diffuse plasma existing above an accretion disc can affect the X-ray spectrum by iron K...
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Multi-line Boltzmann regression for near-electronvolt temperature and CO sensing via MHz-rate infrared laser absorption spectroscopy
A mid-infrared laser absorption technique is developed for sensing of temperature and carbon monoxide (CO) number density from 2000 K to above...
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Probing the Circumgalactic Medium with X-ray Absorption Lines
The circumgalactic medium (CGM) fills the dark matter halo of a galaxy, serving as a gas reservoir between the intergalactic medium and the stellar...
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Interstellar Absorption and Dust Scattering
The study of the interstellar medium (ISM) in the X-rays has entered a golden age with the advent of the X-ray observatories XMM-Newton and Chandra....
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Estimation of H2O Absorption Line Contributions to Atmospheric Transmission in the Ultraviolet Spectral Region
Abstract —The POKAZATEL line list is currently the most complete theoretical list of H 2 O monomer absorption lines. It contains H 2 O lines up to the...
