Results 21 to 30 of about 1,274,676 (322)
Spectral Line Imaging Observations of 1E0102.2-7219 [PDF]
, 2001 E0102-72 is the second brightest X-ray source in the Small Magellanic Cloud and the brightest supernova remnant in the SMC. We observed this SNR for ~140 ksec with the High Energy Transmission Gratings (HETG) aboard the Chandra X-ray Observatory.
Allen, G. E. +7 more
core +3 more sources
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
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 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
Displacement of Spectral Lines [PDF]
Nature, 1920 IN view of the discussion in NATURE and elsewhere on this subject, the following extract from a recent letter of Prof. Einstein may be of interest:
openaire +3 more sources
Effects of nonlocality in time of interactions of an atom with its surroundings on the broadening of spectral lines of atoms [PDF]
, 2002 We investigate effects of nonlocality in time of the interaction of an atom with its surroundings on the spectral line broadening. We show that these effects can be very significant: In some cases nonlocality in time of this interaction can give rise to ...
Adamian +27 more
core +2 more sources
A Clumpy Stellar Wind and Luminosity-Dependent Cyclotron Line Revealed by The First Suzaku Observation of the High-Mass X-ray Binary 4U 1538-522 [PDF]
, 2014 We present results from the first Suzaku observation of the high-mass X-ray binary 4U 1538-522. The broad-band spectral coverage of Suzaku allows for a detailed spectral analysis, characterizing the cyclotron resonance scattering feature at $23.0 \pm 0.4$
Fuerst, Felix +5 more
core +3 more sources
Analysis of Infrared Spectral Radiance of O2 1.27 μm Band Based on Space-Based Limb Detection
Remote Sensing, 2023 The infrared spectral radiance of O2 is of great significance for space-based infrared detection. In this work, based on the demand for near-infrared spectral radiance of O2 limb detection, a method of spectral radiance calculation coupled with an ...
Jingyu Bai +4 more
doaj +1 more source
F, G, K, M Spectral Standards in the Y Band (0.95-1.11 um) [PDF]
, 2010 We take advantage of good atmospheric transparency and the availability of high quality instrumentation in the 1 um near-infrared atmospheric window to present a grid of F, G, K, and M spectral standards observed at high spectral resolution (R ~ 25,000).
Chelsea Sharon +17 more
core +2 more sources
Руды и металлыBased on the study of rutile and cassiterite grains, using Fourier transform infrared microscopy, a new method for their determination in heavy mineral concentrate samples has been developed.
Khachatryan G. K., Anashkina N. E.
doaj +1 more source