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Solar active regions and X-ray bright points: can they communicate?
Lee McDonald
This work examines the observations of an XBP taken in a joint observation
programme, involving the Yohkoh SXT, SOHO CDS, EIT and MDI instruments, on the
11-16 September 1997. The lifetime of the XBP, and the magnetic flux contained
in the photospheric bipole are much larger than those normally measured in
bright points. Therefore this object could be classified as a very small and
simple active region.
A striking feature of the object is a large EUV emitting magnetic loop joining
the XBP to a nearby active region. The observations strongly suggest that
energy is transferred across the loop from the active region to the XBP. The
method of energy transfer, and the consequences for the energy balance of the
system are discussed.
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