Results 11 to 20 of about 1,455,401 (342)
Superfast Line Spectral Estimation [PDF]
IEEE Transactions on Signal Processing, 2018 A number of recent works have proposed to solve the line spectral estimation problem by applying off-the-grid extensions of sparse estimation techniques.
Fleury, Bernard Henri +2 more
core +4 more sources
A Spectral Line Survey of Selected 3 mm Bands Toward Sagittarius B2(N-LMH) Using the NRAO 12 Meter Radio Telescope and the BIMA Array I. The Observational Data [PDF]
Astrophys.J.600:234-253,2004, 2003 We have initiated a spectral line survey, at a wavelength of 3 millimeters, toward the hot molecular core Sagittarius B2(N-LMH). This is the first spectral line survey of the Sgr B2(N) region utilizing data from both an interferometer (BIMA Array) and a ...
A. Remijan +20 more
core +2 more sources
Non-LTE Line Formation in the Near-IR: Hot Stars [PDF]
EAS Publications Series 43 (2010) 199-214, 2010 Line-formation calculations in the Rayleigh-Jeans tail of the spectral energy distribution are complicated by an amplification of non-LTE effects. For hot stars this can make quantitative modelling of spectral lines in the near-IR challenging.
Anderson +31 more
core +2 more sources
Anti-Interference Spectral Confocal Sensors Based on Line Spot [PDF]
SensorsSpectral confocal displacement sensors are non-contact optoelectronic sensors widely utilized for their high accuracy, speed, and ability to measure diverse surfaces.
Bo Wang +4 more
doaj +2 more sources
Triple Spectral Line Imaging of Whole-Body Human Skin: Equipment, Image Processing, and Clinical Data [PDF]
SensorsMultispectral imaging can provide objective quantitative data on various clinical pathologies, e.g., abnormal content of bio-substances in human skin.
Janis Spigulis +5 more
doaj +2 more sources
Bayesian Multi-line Intensity Mapping [PDF]
The Astrophysical JournalLine intensity mapping (LIM) has emerged as a promising tool for probing the 3D large-scale structure through the aggregate emission of spectral lines.
Yun-Ting Cheng +4 more
doaj +2 more sources
Discrete time model of self-oscillations with spectral line widening
Физика волновых процессов и радиотехнические системы, 2022 An algorithm for generating quasi-harmonic self-oscillations with a uniformly widened spectral line is presented. The algorithm is based on the equation of motion of the Thomson-type DT-oscillator, which introduced a random effect in the form of band ...
Valery V. Zaitsev +2 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source