Results 41 to 50 of about 434,940 (199)
Cosmic sources of the Earth's atmosphere ionization (review)
Геофизический журнал, 2017 Characteristics of the Earth's upper atmosphere vary constantly under the action of electromagnetic emission of the sun, solar wind, streams of galactic and solar cosmic rays as well as of precipitation of captured magnetosphere electrons.
L.V. Raychenko, G.V. Melnik
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 We report on observations of highly-varying Si IV 1402.77 Å line profiles observed with the Interface Region Imaging Spectrograph (IRIS) during the M-class flare from 18 January 2022 at an unprecedented 0.8 s cadence.
Juraj Lörinčík +10 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2023 In this work we analyze a small B-class flare that occurred on 29 April 2021 and was observed simultaneously by the Interface Region Imaging Spectrograph (IRIS) and the Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray instrument.
Vanessa Polito +8 more
doaj +1 more source
Solar and Atmospheric Neutrino Oscillations [PDF]
Physica Scripta, 2001 8 pages, LaTeX, 6 figures.
openaire +3 more sources
Solar Impact on Climate: Modeling the Coupling Between the Middle and the Lower Atmosphere [PDF]
, 2005 Solar variability influences the earth's atmosphere on different time scales. In particular, the impact of the 11-year solar cycle is of interest as it provides the major contribution to natural climate variability.
Langematz, Ulrike, Matthes, Katja
core
Evolution of the thermodynamic properties of a coronal mass ejection in the inner Corona
Frontiers in Astronomy and Space Sciences, 2023 The thermodynamic evolution of Coronal Mass Ejections (CMEs) in the inner corona (≤1.5 Rsun) is not yet completely understood. In this work, we study the evolution of thermodynamic properties of a CME core observed in the inner corona on 20 July 2017, by
Jyoti Sheoran +6 more
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Constraining solar abundances using helioseismology [PDF]
, 2004 Recent analyses of solar photospheric abundances suggest that the oxygen abundance in the solar atmosphere needs to be revised downwards. In this study we investigate the consequence of this revision on helioseismic analyses of the depth of the solar ...
Antia, H. M., Basu, Sarbani
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Which Solar Latitude Follows the Sunspot Cycle Exactly?
The Astrophysical Journal LettersThe large-scale convection in the Sun known as supergranulation is manifested as a network structure on the solar surface. The network cells have an average lifetime of 24 hr, a size of about 30 Mm, and a lane width of about 6 Mm.
K. P. Raju
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Formation of MnI lines in the solar atmosphere
, 2007 We present a detailed NLTE analysis of 39 MnI lines in the solar spectrum. The influence of NLTE effects on the line formation and element abundance is investigated. Our goal is the derivation of solar log gfe values for manganese lines, which will later
Abt +57 more
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Causes of atmospheric temperature change 1960-2000: A combined attribution analysis [PDF]
, 2003 We investigate the causes of temperature change over the last four decades, both near the surface and in the free atmosphere, using a coupled atmosphere/ocean general circulation model, HadCM3, which requires no flux correction.
Allen +25 more
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