Results 141 to 150 of about 2,393 (171)

IUE/OPTICAL/VLA flares on AD Leo

2008
We discuss joint observations of flares on the dMe star AD Leo made with IUE, the VLA, and the Tinsley photometer at the University of Hawaii's 24-inch reflector on Mauna Kea. We find that optical emission is correlated with C IV while radio emission is better correlated with He II.
Dale E. Gary, P. B. Byrne, C. J. Butler
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An example of radio and optical homologous flares

Solar Physics, 1970
Fokker (1967) has raised the question of whether the optical and radio homologies of flares are correlated. Two 2b flares occurring nearly 54 h apart (July 9 and 12, 1968) were observed at 29 wavelengths from Hα+4.00 A to Hα−4.26 A and at 10-cm radio. Adjacent pictures were spaced 0.295 A and 2 sec apart.
K. P. White, T. J. Janssens
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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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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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On the ionisation of hydrogen in optical flares

Solar Physics, 1973
Non-steady state and non-LTE effects on the ionisation equilibrium of hydrogen in optical flares are considered in terms of a two-level hydrogen atom. It is shown that, just as in the quiet low chromosphere, the ionisation equation is controlled by spontaneous recombination to the second level and by photoionisation from this level by photospheric ...
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Solar flare optical, neutron and gamma-ray emission

Solar Physics, 1969
It has previously been suggested that the energy for the optical emission of solar flares was provided by ionization losses of accelerated particles in the flares. We show that nuclear interaction of these particles would also produce fluxes of secondary neutrons and gamma rays detectable at the earth.
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Optical observations of flare-productive flux emergence

2005
The optical observations of the relationship between emerging magnetic fluxes and flares are reviewed and the characteristics essential to the flare-productive emerging flux regions are studied. Examining several essential parameters, i.e. location of emergence, orientation of bipolar axis, growth rate and magnetic shear development, we conclude that ...
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Optical discovery of stellar tidal disruption flares

2012
AAS 219th meeting, 8-12 january, Austin, Texas, 08 januari ...
Farrar, G., Velzen, S. van
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