For more details on farside imaging, see Magnetic maps of the whole Sun for MDI and Far-side Imaging with GONG+ for GONG+.
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The images are maps of wave speed variations with locations of faster wave speed shown darker. These
darker regions indicate locations where there is an accumulation of magnetic field on the far surface. The farside
images can currently only be computed out to 45 degrees from the farside disk center as (un)seen from Earth.
These results are for 2001 Sep 29. The top image is from MDI and the
middle from the GONG+ network, while the bottom represents the synoptic
map of magnetic activity as observed from the visible side for the whole
solar rotation.
For more details on farside imaging, see Magnetic maps of the whole Sun for MDI and Far-side Imaging with GONG+ for GONG+. |