Results 11 to 20 of about 78,876 (264)
Radio Frequency Nonionizing Radiation in a Community Exposed to Radio and Television Broadcasting
Environmental Health Perspectives, 2006 Exposure to radio frequency (RF) nonionizing radiation from telecommunications is pervasive in modern society. Elevated disease risks have been observed in some populations exposed to radio and television transmissions, although findings are inconsistent.
James B Burch +2 more
exaly +3 more sources
Generation of radio frequency radiation by femtosecond filaments [PDF]
Physical Review E, 2021 Recent experiments have shown that femtosecond filamentation plasmas generate ultra-broadband radio frequency radiation (RF). We show that a combination of plasma dynamics is responsible for the RF: a plasma wake field develops behind the laser pulse, and this wake excites (and copropagates with) a surface wave on the plasma column.
Travis Garrett +11 more
openaire +3 more sources
Prospects and challenges of numerical modeling of the Sun at millimeter wavelengths
Frontiers in Astronomy and Space Sciences, 2022 The Atacama Large Millimeter/submillimeter Array (ALMA) offers new diagnostic possibilities that complement other commonly used diagnostics for the study of the Sun.
Sven Wedemeyer +13 more
doaj +1 more source
Universe, 2023 Using the radio spectra of the 2 April 2022 eruptive flare, we analyze a group of highfrequency type III bursts by our new wavelet method. In this analysis, we found a multi-periodicity of these bursts that is interpreted by the electron beams ...
Marian Karlický, Ján Rybák
doaj +1 more source
An ALMA Observation of Time Variations in Chromospheric Temperature of a Solar Plage Region
Frontiers in Astronomy and Space Sciences, 2022 Nanoflares and the shock formation of magnetohydrodynamic waves in the solar chromosphere have been considered as key physical mechanisms of the heating of the chromosphere and corona.
Masashi Abe +5 more
doaj +1 more source
18F-FDG PET/CT in Staging Pediatric Rhabdomyosarcoma; Added benefits in comparison to conventional imaging. [PDF]
Egyptian Journal of Nuclear Medicine, 2019 Purpose: The aim was to evaluate the added value of 18F-FDG PET/CT in initial staging of pediatric Rhabdomyosarcoma patients in comparison to other conventional images.
Rezk M., El-kholy, E
doaj +1 more source
Diffuse Josephson Radiation in Turbulence
Frontiers in Physics, 2021 The possibility of generating diffuse radiation in extended astronomical media by plasma turbulence is investigated under the assumption that the turbulence can be understood as an ensemble of small-scale magnetic filaments (narrow current sheets ...
R. A. Treumann +2 more
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Two Successive Type II Radio Bursts Associated With B-Class Flares and Slow CMEs
Frontiers in Astronomy and Space Sciences, 2020 From 2018 Oct 12 to 13, three successive solar eruptions (E1–E3) with B-class flares and poor white light coronal mass ejections (CMEs) occurred from the same active region NOAA AR 12724. Interestingly, the first two eruptions are associated with Type II
Suli Ma, Huadong Chen, Huadong Chen
doaj +1 more source
Solar-Terrestrial Physics, 2022 Solar radiation is emitted in the wide frequency range from gamma to radio emission. Hence, joint observations from different instruments and frequency ranges let us to complete full representation of the evolution of solar events and confirm ...
N.O. Muratova +2 more
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Fluctuations in Cosmic Radiation at Radio-Frequencies [PDF]
Nature, 1946 In a previous publication1 we described the results of an investigation into the spatial distribution of cosmic electromagnetic noise radiation at 5 metres wave-length. We have recently been engaged in an attempt to make a more detailed determination by using a more sensitive receiver of narrower beam-width. An interesting new feature which has emerged
J S, HEY, S J, PARSONS, J W, PHILLIPS
openaire +2 more sources