MM#009 Default HESSI Target

Max Millennium Chief Observer mmchiefobserver at gmail.com
Fri Dec 20 11:48:49 MST 2013


Dear RHESSI Collaborators,

The current level of solar activity is moderate. Yesterday's
target (NOAA 11928) emerged further flux and shows a
new highly sheared mixed polarity spot in its intermediate
portion. The region was responsible for C-class activity
including a C8.5 flare on 20-Dec-2013 at 15:33 UT. On the
other hand, NOAA 11931 has rotated onto the East limb
and was responsible for the two largest events of the
previous 24 hours, a M3.5 flare on 19-Dec-2013 at 23:19
UT and a M1.6 flare on 20-Dec-2013 at 11:57 UT. While the
magnetic configuration of NOAA 11931 is not as complex
as NOAA 11928, its coronal structure did not appear
significantly altered after the M-class flares, and so it may
be capable of further significant activity. The target region
is now designated as NOAA 11931. Further high C-class
activity is expected with a chance for further low M-class
events.

The position of NOAA 11931 on 20-Dec-2013 at 18:45 UT is:
S15E52, ( -741", -236" )

See http://www.SolarMonitor.org for images and
http://solar.physics.montana.edu/max_millennium/ops/observing.shtml
for a description of the current Max Millennium Observing Plan.

Regards,

Paul Higgins (Trinity College Dublin/LMSAL)


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