Solar Flares: Magnetohydrodynamic Processes

Numerical Study of Magnetic Reconnection Processes in Solar Flares

Preface W. F. Ames (1965) said " fluid mechanics is especially rich in nonlinearities ". In this sense, I might as well say " Magnetohydrodynamics (MHD) is much richer ". Such rich nonlinearities bring about not only infinite research interest, but also enormous difficulty in mathematically treating them. Numerical simulation provides a powerful approach to overcome the difficulty and to invest...

Global Properties of Solar Flares

Magnetohydrodynamic Simulation of Solar Supergranulation

Three-dimensional magnetohydrodynamical large eddy simulations of solar surface convection using realistic model physics is conducted. The effects of magnetic fields on thermal structure of convective motions into radiative layers, the range of convection cell sizes and penetration depths of convection is investigated. We simulate a some portion of the solar photosphere and the upper layers of ...

Lithium-6 from Solar Flares

By introducing a hitherto ignored Li producing process, due to accelerated He reactions with He, we show that accelerated particle interactions in solar flares produce much more Li than Li. By normalizing our calculations to gamma-ray data we demonstrate that the Li produced in solar flares, combined with photospheric Li, can account for the recently determined solar wind lithium isotopic ratio...

7Li PRODUCTION IN SOLAR FLARES

The Y ohkoh satellite has registered X-ray spectra of two solar Ñares with a linelike feature in the region 400È500 keV. Analysis shows that this feature can be interpreted as gamma-ray lines from excited 7Li and 7Be produced from a ] a reactions. The 7Li production rate in the solar atmosphere is estimated from these observations. The lower limit on the Ñare-produced 7Li abundance on the Sun i...