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Solar flares, magnetic clouds, and geomagnetic storms

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Firstly, semi-empirical distributions of solar wind proton number density and velocity ordered around the Heliospherical Current Sheet (HCS) of the inner heliosphere are considered. Then, the velocity profiles of flare-generated Coronal Mass Ejections (CMEs) running through the inhomogeneous heliosphere are calculated. They show that the velocities strongly depend on flare positions with respect to the HCS. Finally, a specific mutual flare-HCS-Earth location leading to a strong geomagnetic storm is deduced from calculations and supported by a few real events of solar-terrestrial physics.

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Ivanov, K.G., Harshiladze, A.F. & Romashets, E.P. Solar flares, magnetic clouds, and geomagnetic storms. Sol Phys 143, 365–372 (1993).

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  • Flare
  • Solar Wind
  • Velocity Profile
  • Current Sheet
  • Coronal Mass Ejection