Within the powerful magnetic fields of the Sun, the following occur:
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Solar flares: These are sudden eruptions of energy caused by the magnetic fields in the Sun's atmosphere. They can release a large amount of energy, including radiation across the electromagnetic spectrum.
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Charged particles: The Sun emits a stream of charged particles known as the solar wind, which consists mainly of electrons and protons. The magnetic fields can trap and accelerate these charged particles.
Auroras are caused on Earth by interactions between these charged particles (from the solar wind) and the Earth's magnetic field, usually as a result of solar activity, including solar flares.
Eclipses, however, are not related to magnetic fields in the Sun. They occur when the Moon passes between the Earth and the Sun (solar eclipse) or when the Earth passes between the Sun and the Moon (lunar eclipse).
In summary, solar flares and charged particles are directly associated with powerful magnetic fields within the Sun.