Results 21 to 30 of about 5,643,837 (365)
Spectral Line VLBI Studies Using the ngEHT
Galaxies, 2023 Spectroscopy in the mm/sub-mm wavelength range is a powerful tool to study the gaseous medium in various astrophysical environments. The next generation Event Horizon Telescope (ngEHT) equipped with a wide-bandwidth backend system has great potential for
Dong-Jin Kim, Vincent Fish
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S-type Stars: Line List for the A2Π–X2Σ+ Band System of LaO
The Astrophysical Journal, 2023 LaO bands are found in the spectra of cool S-type stars. The bands of the A ^2 Π–X ^2 Σ ^+ transition with $v^{\prime} \leqslant 3$ and v ″ ≤ 4 are rotationally analyzed, providing spectroscopic constants for the A ^2 Π state.
P. F. Bernath +2 more
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The Astrophysical Journal Supplement Series, 2023 Using high-resolution spectra of Ni ii recorded using Fourier transform (FT) spectroscopy of continuous, nickel–helium hollow cathode discharge sources in the region 143–5555 nm (1800–70,000 cm ^−1 , the analysis of 1016 Ni ii lines confirmed and ...
Christian P. Clear +4 more
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Spectral Line Identification and Modelling (SLIM) in the MAdrid Data CUBe Analysis (MADCUBA) package [PDF]
Astronomy & Astrophysics, 2019 Context. The increase in bandwidth and sensitivity of state-of-the-art radio observatories is providing a wealth of molecular data from nearby star-forming regions up to high-z galaxies.
S. Martín +5 more
semanticscholar +1 more source
Spectral line extraction based on ant-colony algorithm
EURASIP Journal on Advances in Signal Processing, 2021 A spectral-line-extraction algorithm based on the ant-colony algorithm is proposed to address the difficulty of extracting spectral lines in low signal-to-noise ratio conditions, and the problem that results from the optimal path algorithm falls into ...
Yusheng Cheng +4 more
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Review of Rydberg Spectral Line Formation in Plasmas
Atoms, 2023 The present review is dedicated to the problem of an array of transitions between highly-excited atomic levels. Hydrogen atoms and hydrogen-like ions in plasmas are considered here. The presented methods focus on calculation of spectral line shapes. Fast
Andrey Yu. Letunov, Valery S. Lisitsa
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ALMA spectral line and imaging survey of a low and a high mass-loss rate AGB star between 335 and 362 GHz [PDF]
Astronomy & Astrophysics, 2018 Context. Low and intermediate mass stars are known to power strong stellar winds when evolving through the asymptotic giant branch (AGB) phase. Initial mass, luminosity, temperature, and composition determine the pulsation characteristics of the star and
L. Decin +4 more
semanticscholar +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2023 Signal processing of flutter flight test data enables verification of aircraft flutter design, and the signal from a flutter flight test excited by atmospheric turbulence is a particularly important form of the flutter test.
Shiqiang Duan, Hua Zheng
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Light: Science & Applications, 2021 Optical coherence tomography (OCT) is a widely used non-invasive biomedical imaging modality that can rapidly provide volumetric images of samples. Here, we present a deep learning-based image reconstruction framework that can generate swept-source OCT ...
Yijie Zhang +7 more
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“Structure of Spectral Lines” [PDF]
Nature, 1947 In Nature of August 23, p. 244, Dr. D. A. Jackson reviews my recent book on “High-Resolution Spectroscopy” (Methuen, 1947). After considerable hesitation and with much reluctance, I feel compelled to comment on several misrepresentations made by Dr. Jackson.
S, TOLANSKY, D A, JACKSON
openaire +3 more sources