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MAGNETIC PROPERTIES OF SOLAR ACTIVE REGIONS THAT GOVERN LARGE SOLAR FLARES AND ERUPTIONS [PDF]
, 2016 Solar flares and coronal mass ejections (CMEs), especially the larger ones, emanate from active regions (ARs). With the aim of understanding the magnetic properties that govern such flares and eruptions, we systematically survey all flare events with ...
S. Toriumi +4 more
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SCATTERING POLARIZATION IN SOLAR FLARES [PDF]
The Astrophysical Journal, 2013 There is an ongoing debate about the origin and even the very existence of a high degree of linear polarization of some chromospheric spectral lines observed in solar flares. The standard explanation of these measurements is in terms of the impact polarization caused by non-thermal proton and/or electron beams.
Jiri Stepan, Petr Heinzel
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Anomaly distribution of ionospheric total electron content responses to some solar flares
Earth and Planetary Physics, 2019 Previous studies have shown that the ionospheric responses to a solar flare are significantly dependent on the solar zenith angle (SZA): the ionospheric responses are negatively related to the SZAs.
HuiJun Le +3 more
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Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope [PDF]
EPJ Web of Conferences, 2020 Low-frequency radio telescopes are cheap and useful devices for the investigation of terrestrial and extra-terrestrial emissions. These emissions come either from the Sun and the planet Jupiter to terrestrial emissions.
Aqasha Adam +3 more
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On the Performance of Multi-Instrument Solar Flare Observations During Solar Cycle 24 [PDF]
, 2017 The current fleet of space-based solar observatories offers us a wealth of opportunities to study solar flares over a range of wavelengths. Significant advances in our understanding of flare physics often come from coordinated observations between ...
Ireland, Jack, Milligan, Ryan O.
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Solar flares and energetic particles [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 Solar flares are now observed at all wavelengths from γ -rays to decametre radio waves. They are commonly associated with efficient production of energetic particles at all energies. These particles play a major role in the active Sun because they contain a large amount of the energy released during flares ...
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Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares [PDF]
, 2017 We report on the Fermi-LAT detection of high-energy emission from the behind-the-limb (BTL) solar flares that occurred on 2013 October 11, and 2014 January 6 and September 1.
M. Ackermann +88 more
semanticscholar +1 more source
THE SOLAR FLARE IRON ABUNDANCE [PDF]
The Astrophysical Journal, 2012 The abundance of iron is measured from emission line complexes at 6.65 keV (Fe line) and 8 keV (Fe/Ni line) in {\em RHESSI} X-ray spectra during solar flares. Spectra during long-duration flares with steady declines were selected, with an isothermal assumption and improved data analysis methods over previous work.
Kjh Phillips, Brian R. Dennis
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Annals of Geophysics, 2019 . We have investigated the solar flare effects on ionospheric absorption with the systematic analysis of ionograms measured at midlatitude and low-latitude ionosonde stations under different solar zenith angles.
V. Barta +4 more
semanticscholar +1 more source
Vistas in Astronomy, 1974 When we look at a solar flare we observe at relatively close hand a sample of the most energetic phenomena in the universe. These dynamic eruptions can only truly be appreciated from time-lapse movies or spectra. They fill the interplanetary medium with cosmic rays and shock waves, and produce plasmas with temperatures of 50 million degrees.
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