Results 271 to 280 of about 2,210,115 (287)

Future optical observations of solar flares

Advances in Space Research, 1988
Abstract The fundamental importance of observing the chromospheric and photospheric components of solar flares is stressed. Careful interpretation of several optical flare spectral features enable us to disentangle the various proposed energy transfer mechanisms during the different phases of the flare development.
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Optically thick line widths in pyrotechnic flares

Journal of Quantitative Spectroscopy and Radiative Transfer, 1975
Experimentally determined sodium line widths for pyrotechnic flares are compared with simple analytical, optically-thick-line-shape calculations. Three ambient pressure levels are considered (760, 150 and 30 torr) for three different flare compositions. The measured line widths range from 1.3 to 481 A.
B.E. Douda, R.J. Exton
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Measuring and modeling flare in optical lithography

SPIE Proceedings, 2003
Flare, unwanted scattered light arriving at the wafer, is caused by anything that forces the light to travel in a “non-ray trace” direction. The amount of flare experienced by any given feature is a function of both the local environment around that feature (short range flare) and the total amount of energy going through the lens (long range flare ...
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Optical Emission from Stellar Flares

1996
Optical observations of stellar flares on late-type stars are common, particularly in the U and B bands of the Johnson system. The reason for this preference is the large proportionate increase in the flux in the ultraviolet during flares on late-type stars, as compared to the quiescent stellar continuum which peaks in the near infra-red.
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Review of optical observations of solar flares

Solar Physics, 1987
The recent observations of solar flares, made with a Lyot filter and a spectrograph in Hα, HeD3, higher Balmer lines, metallic lines, and continuum, are discussed. It is important to study the energy supply of non thermal particle/ conduction/ irradiation into the lower atmosphere from the optical observations with high temporal and spatial resolutions.
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Solar gamma-ray flares that occur before low-power optical flares

Solar gamma-ray flares occurring within a few minutes before an optical flare on the Sun were studied. It was found that the intensity of gamma-ray flares per optical flare varies over the 11-year solar cycle and reaches a minimum near the maximum activity in the cycle.
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Optical Communication System Investigation with Application for VLF Solar Flares Monitoring System

2023
Tsvetan Valkovski
exaly  

Statistical Distributions of Optical Flares from Gamma-Ray Bursts

Astrophysical Journal, 2017
Hai Yu, Zigao Dai, Shuang-Xi Yi
exaly  

Dynamic Models of Optical Emission in Impulsive Solar Flares

Astrophysical Journal, 1999
Suzanne Hawley, William Abbett
exaly  

Optical flares on the RS CVn binary II Peg

Monthly Notices of the Royal Astronomical Society, 1992
L N Mavridis
exaly