Results 21 to 30 of about 1,349,657 (273)
A case study of HF radar spectra and 630.0 nm auroral emission in the pre-midnight sector [PDF]
Annales Geophysicae, 2001 A comparison of HF radar backscatter observed by the CUTLASS Finland radar, meridian scanning photometer data from Longyearbyen, magnetic field variations from IMAGE stations, and particle precipitation measured by the DMSP F12 spacecraft is presented.
M. Lester +4 more
doaj +1 more source
The Spectral Line Shape of Exotic Nuclei [PDF]
, 1996 The quadrupole strength function of $^{28}O$ is calculated making use of the SIII interaction, within the framework of continuum-RPA and taking into account collisions among the nucleons (doorway coupling).
E. Vigezzi +12 more
core +2 more sources
The Spectral Correlation Function -- A New Tool for Analyzing Spectral-Line Maps [PDF]
, 1999 The "spectral correlation function" analysis we introduce in this paper is a new tool for analyzing spectral-line data cubes. Our initial tests, carried out on a suite of observed and simulated data cubes, indicate that the spectral correlation function [
Goodman, Alyssa A. +3 more
core +4 more sources
A method to achieve spectral beam combining based on a novel symmetric grating
Frontiers in Physics, 2022 A symmetric grating is proposed to obtain higher output power in spectral beam combination by increasing the number of lasers and spectral utilization. The grating allows laser beams to be incident from both sides of the grating normal to achieve coaxial
Xinmin Fan +18 more
doaj +1 more source
Modeling the near-infrared lines of O-type stars [PDF]
, 2004 We use a grid of 30 line-blanketed unified stellar photosphere and wind models for O-type stars; computed with the code CMFGEN in order to evaluate its potential in the near-infrared spectral domain. The grid includes dwarfs, giants and supergiants.
de Koter, A. +3 more
core +2 more sources
Data archive of the multi-channel infrared solar spectrograph(2001–2015)
中国科学数据, 2022 The observation and study of solar spectrum can help us to know the physical parameters, such as the plasma velocity, electron temperatures, electron density, etc., of the line formation layers of solar atmosphere,
Yang Zherui +4 more
doaj +1 more source
Sensors, 2021 This paper presents a multi-spectral photometric stereo (MPS) method based on image in-painting, which can reconstruct the shape using a multi-spectral image with a laser line.
Liang Lu +4 more
doaj +1 more source
A search for 21 cm HI absorption in AT20G compact radio galaxies [PDF]
, 2012 We present results from a search for 21 cm associated HI absorption in a sample of 29 radio sources selected from the Australia Telescope 20 GHz survey. Observations were conducted using the Australia Telescope Compact Array Broadband Backend, with which
Allison, J. R. +9 more
core +2 more sources
LifeWe employed data from the Spitzer Space Telescope to investigate the presence of the aromatic amino acids tyrosine and phenylalanine in the interstellar gas of the young star cluster IC 348.
Susana Iglesias-Groth +3 more
doaj +1 more source
IEEE Photonics Journal, 2010 We report generation of high-modulation-depth photonic millimeter-wave (MMW) waveforms by applying line-by-line pulse shaping on a phase-modulated continuous-wave frequency comb.
F.-M. Kuo +8 more
doaj +1 more source