Results 21 to 30 of about 9,915 (239)
A Database of Magnetic and Thermodynamic Properties of Confined and Eruptive Solar Flares
The Astrophysical Journal, 2023 Solar flares sometimes lead to coronal mass ejections that directly affect Earth's environment. However, a large fraction of flares, including on solar-type stars, are confined flares.
Maria D. Kazachenko
doaj +1 more source
Symposium - International Astronomical Union, 1968 A model of solar flares is proposed in which the preflare state comprises a bipolar magnetic-field structure associated with a bipolar photospheric magnetic region. At low heights, the magnetic-field lines are closed but, at sufficiently great heights, the lines are drawn out into an open structure comprising a bipolar flux tube containing a ‘neutral ...
openaire +1 more source
The Astrophysical Journal, 2023 We investigate gamma-ray emission in the impulsive phase of solar flares and the detectability of nonthermal signatures from protostellar flares. Energetic solar flares emit high-energy gamma rays of GeV energies, but their production mechanism and ...
Shigeo S. Kimura +2 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported through the solar atmosphere or into the heliosphere, and together with ...
Graham S. Kerr, Graham S. Kerr
doaj +1 more source
Earth, Planets and Space, 2018 The effects of solar flares on the propagation of subionospheric VLF signals from NWC and NLK transmitter stations monitored at a low-latitude station, Suva (18.2°S, 178.4°E), Fiji, between December 2006 and December 2010 (an unprecedented solar minimum ...
Abhikesh Kumar, Sushil Kumar
doaj +1 more source
Power-law Distribution of Solar Cycle–modulated Coronal Jets
The Astrophysical Journal Supplement Series, 2023 Power-law distributions have been studied as a significant characteristic of nonlinear dissipative systems. Since discovering the power-law distribution of solar flares that was later extended to nanoflares and stellar flares, it has been widely accepted
Jiajia Liu +8 more
doaj +1 more source
Solar–Stellar Connection: X-Ray Flares to Energetic (E > 10 MeV) Particle Events
The Astrophysical Journal, 2023 Energetic particle environments are an important factor for the viability of life on exoplanets surrounding flare stars. In the heliosphere, large gradual solar energetic ( E > 10 MeV) particle (SEP) events are produced by shocks from fast coronal mass ...
S. W. Kahler, A. G. Ling
doaj +1 more source
Solar cycle dependence of scaling in solar wind fluctuations [PDF]
, 2008 In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that ...
B. Hnat +6 more
core +1 more source
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
doaj +1 more source
Latitudinal distribution of solar microflares and high-temperature plasma at solar minimum
Solar-Terrestrial Physics, 2023 The paper analyzes the latitudinal distribution of high-temperature plasma (T>4 MK) and microflares on the solar disk during low solar activity in 2009.
Kirichenko A. S. +4 more
doaj +1 more source