Matches in SemOpenAlex for { <https://semopenalex.org/work/W3117274705> ?p ?o ?g. }
- W3117274705 abstract "We report detection of oscillations in brightness temperature, size, and horizontal velocity of three small bright features in the chromosphere of a plage/enhanced-network region. The observations, which were taken with high temporal resolution (i.e., 2-sec cadence) with the Atacama Large Millimeter/submillimeter Array (ALMA) in Band 3 (centred at 3 mm; 100 GHz), exhibit three small-scale features with oscillatory behaviour with different, but overlapping, distributions of period on the order of, on average, $90 pm 22$ s, $110 pm 12$ s and $66 pm 23$ s, respectively. We find anti-correlations between perturbations in brightness temperature and size of the three features, which suggest the presence of fast sausage-mode waves in these small structures. In addition, the detection of transverse oscillations (although with a larger uncertainty) may suggest as well the presence of Alfv'enic oscillations which are likely representative of kink waves. This work demonstrates the diagnostic potential of high-cadence observations with ALMA for detecting high-frequency magnetohydrodynamic waves in the solar chromosphere. Such waves can potentially channel a vast amount of energy into the outer atmosphere of the Sun." @default.
- W3117274705 created "2021-01-05" @default.
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- W3117274705 date "2020-12-21" @default.
- W3117274705 modified "2023-10-18" @default.
- W3117274705 title "High-frequency oscillations in small chromospheric bright features observed with Atacama Large Millimetre/Submillimetre Array" @default.
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- W3117274705 doi "https://doi.org/10.1098/rsta.2020.0184" @default.
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