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The LASCO-C2 coronagraph aboard SOHO continues its white-light imaging of
the corona from 2 to 6 solar radii, thus allowing investigating the consequences of
the weak Solar Cycle 24 on the corona and comparing it to the previous cycle.
Temporal variations of the radiance of the corona and of its electron content,
either global or integrated in limited regions (e.g., equatorial version polar) are
studied and compared with various proxies of solar activity in order to identify the
driving mechanisms that control the activity of the corona. Particular attention is
paid to the mid-term variations which are distinctly different between the two
cycles. We highlight the similarities and differences between the Solar Cycles 23
and 24. Finally, we rely on our ARTEMIS-II catalog of coronal mass ejections (CMEs)
to compare their rates and properties (spatial distribution, velocity, mass) during
these two cycles. |
