Results 131 to 140 of about 714 (187)
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Journal of Atmospheric and Terrestrial Physics, 1961
Abstract An increase of the OH emission intensity with increasing rotational temperature, and seasonal variations of the intensity and rotational temperature of OH have been established by spectral observations at Yakutsk. No such behaviour has been observed at Zvenigorod. At both locations variations of the relative populations of the OH vibrational
V.I. Krassovsky, N.N. Shefov, V.I. Yarin
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Abstract An increase of the OH emission intensity with increasing rotational temperature, and seasonal variations of the intensity and rotational temperature of OH have been established by spectral observations at Yakutsk. No such behaviour has been observed at Zvenigorod. At both locations variations of the relative populations of the OH vibrational
V.I. Krassovsky, N.N. Shefov, V.I. Yarin
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Proceedings of the IRE, 1959
A phenomenological description of the night airglow is presented, reviewing the historical background, and what is known about height, temporal and spatial variations in intensity, and movements. The very important relationship to aurora and evidence for latitude-seasonal effects are examined.
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A phenomenological description of the night airglow is presented, reviewing the historical background, and what is known about height, temporal and spatial variations in intensity, and movements. The very important relationship to aurora and evidence for latitude-seasonal effects are examined.
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Planetary and Space Science, 1959
Abstract Low dispersion, high speed spectra of the unilluminated portion of Venus show emission features at 4415 A and 4435 A which agree in position with those found by Kozyrev. Kozyrev's other emission bands are not corroborated by these spectra. A previously unreported emission band may be present at 4505 A.
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Abstract Low dispersion, high speed spectra of the unilluminated portion of Venus show emission features at 4415 A and 4435 A which agree in position with those found by Kozyrev. Kozyrev's other emission bands are not corroborated by these spectra. A previously unreported emission band may be present at 4505 A.
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Ultraviolet Night Airglow of Venus
Science, 1979The night airglow spectrum of Venus in the ultraviolet is dominated by the v ′ = 0 progressions of the gamma and delta bands of nitric oxide. The bands are produced by two-body radiative recombination of nitrogen and oxygen atoms. Since the source of these atoms is in the dayside thermosphere, the night airglow is a
A I, Stewart, C A, Barth
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Airglow I: Four Main Airglow Emissions
2002Airglowln a dark moonless night away from city light, a certain amount of light is observed to come from space whereby big letters can be read. Excluding light from stars, zodiac, galaxies and that scattered by the atmosphere, it is observed that the remaining light, which is about 40%, is produced by self luminescence of atmosphere.
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Jupiter's Nightside Airglow and Aurora
Science, 2007Observations of Jupiter's nightside airglow (nightglow) and aurora obtained during the flyby of the New Horizons spacecraft show an unexpected lack of ultraviolet nightglow emissions, in contrast to the case during the Voyager flybys in 1979. The flux and average energy of precipitating electrons generally decrease with increasing local time across the
Gladstone, GR +14 more
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Calibrations of the Airglow Photometers and Spectrometers
Applied Optics, 1973When observations of the same source are made by several instruments, the sources of apparent discrepancies in the results of these measurements are likely to be (1) differences in the operational definitions of the terms involved in the calibration procedure and (2) various sources of errors in the execution of the step wise procedure of calibrating ...
B S, Dandekar, D J, Davis
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Excitation of the Venus Night Airglow
Science, 1977The strongest spectral features in the Venus night airglow between 3000 and 8000 angstroms are identified as the Herzberg II (c 1 σ - u - X 3 σ - g ) bands of molecular oxygen.
G M, Lawrence, C A, Barth, V, Argabright
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Journal of Scientific Instruments, 1960
A simple, direct-reading and sensitive photometer which is easily transported and is independent of external power supplies is described. Details of the optical system and the electronic circuitry are given, and the performance of the apparatus is discussed.
B J O'Brien, G de la Harpe
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A simple, direct-reading and sensitive photometer which is easily transported and is independent of external power supplies is described. Details of the optical system and the electronic circuitry are given, and the performance of the apparatus is discussed.
B J O'Brien, G de la Harpe
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Journal of Photochemistry, 1984
Abstract This survey of excitation processes for singlet O 2 in planetary atmospheres is intended to provide an introduction to the following papers in which laboratory investigations and field measurements are discussed in more detail. The three singlet states, a 1 Δ g , b 1 Σ g + and c 1 Σ u − , contribute to features in the airglows of ...
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Abstract This survey of excitation processes for singlet O 2 in planetary atmospheres is intended to provide an introduction to the following papers in which laboratory investigations and field measurements are discussed in more detail. The three singlet states, a 1 Δ g , b 1 Σ g + and c 1 Σ u − , contribute to features in the airglows of ...
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