Results 31 to 40 of about 12,606 (256)

Variability of the Brunt–Väisälä frequency at the OH-airglow layer height at low and midlatitudes [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
Airglow spectrometers, as they are operated within the Network for the Detection of Mesospheric Change (NDMC; https://ndmc.dlr.de, last access: 1 November 2020), for example, allow the derivation of rotational temperatures which are equivalent to the ...
S. Wüst   +5 more
doaj   +1 more source

A Survey of 10-Micron Silicate Emission from Dust around Young Sun-Like Stars [PDF]

open access: yes, 2003
We obtained low resolution (R = 100) mid-infrared (8-13 micron wavelengths) spectra of 8 nearby young main sequence stars with the Keck 1 telescope and Long-Wavelength Spectrometer (LWS) to search for 10 micron silicate (Si-O stretch) emission from ...
Aumann   +34 more
core   +1 more source

Airglow

open access: yesEos, Transactions American Geophysical Union, 1971
The past 4 years have seen the continuation of considerable activity in airglow research. Patterns of changing emphasis are becoming clear, observations are tending to become more selective, and changes in technique have led to regular observations of dayglow, line widths in the nightglow, and observations in the middle and far ultraviolet, detection ...
openaire   +1 more source

The First Detections of the Extragalactic Background Light at 3000, 5500, and 8000A (II): Measurement of Foreground Zodiacal Light [PDF]

open access: yes, 2001
We present a measurement of the absolute surface brightness of the zodiacal light (3900-5100A) toward a fixed extragalactic target at high ecliptic latitude based on moderate resolution (~1.3A per pixel) spectrophotometry obtained with the du Pont 2.5m ...
Baldwin J. H.   +29 more
core   +2 more sources

Space-Based Limb-Imaging Spectrometer for Atmospheric O2 Airglow Detection

open access: yesAtmosphere
This paper presents a space-based limb-imaging spectrometer (LIS) for detecting atmospheric O2 airglow; it scans the atmosphere with a vertical range of 10–100 km and has a vertical resolution of 2 km. The LIS’s detection performance needs to be examined
Minjie Zhao   +14 more
doaj   +1 more source

Studying a Long-Lasting Meteor Trail from Stereo Images and Radar Data

open access: yesAtmosphere, 2021
Unique observation of a long-lasting meteor trail of about half an hour duration is described. The trail resulted from a burning meteor from the Leonid storm flux in the middle latitudes over eastern Siberia.
Roman V. Vasilyev   +6 more
doaj   +1 more source

CalFUSE v3: A Data-Reduction Pipeline for the Far Ultraviolet Spectroscopic Explorer

open access: yes, 2007
Since its launch in 1999, the Far Ultraviolet Spectroscopic Explorer (FUSE) has made over 4600 observations of some 2500 individual targets. The data are reduced by the Principal Investigator team at the Johns Hopkins University and archived at the ...
A. W. Fullerton   +16 more
core   +2 more sources

Seasonal and interannual variations in the [OI] 630 nm atmospheric emission as derived from observations over Eastern Siberia in 2011–2017

open access: yesSolar-Terrestrial Physics, 2018
Seasonal and interannual variations in the [OI] 630 nm atmospheric emission are studied from observations of airglow in Eastern Siberia. Among features of seasonal variation in this emission are a pronounced summer maximum, an autumn minimum, and a ...
Mikhalev A.V.
doaj   +1 more source

Estimation of the vertical wavelength of atmospheric gravity waves from airglow imagery [PDF]

open access: yes, 2011
In the summer of 2010, two imagers were installed in New Mexico with the objective of making stereoscopic observations of atmospheric gravity waves (AGWs).
Kanwar, Uday
core  

GALEX FUV Observations of Comet C/2004 Q2 (Machholz): The Ionization Lifetime of Carbon

open access: yes, 2010
We present a measurement of the lifetime of ground state atomic carbon, C(^3P), against ionization processes in interplanetary space and compare it to the lifetime expected from the dominant physical processes likely to occur in this medium.
Axford   +29 more
core   +1 more source

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