Dear RHESSI Collaborators,
Solar activity remains at a low level. NOAA region 11928 has now fully
rotated over the South West limb. NOAA 11936 has emerged new magnetic
flux in its trailing spot region over the past 24 hours. 11936 was the
source of 2 low C-class flares since yesterday's message (a C1.7 flare
on 25-Dec-2013 at 16.28 UT and a C1.3 flare on 26-Dec-2013 at 08:09 UT).
Further C-class activity is likely over the next 24 hours, with a small
chance for a low M-class flare if NOAA 11936 continues to emerge new
magnetic flux.
The position of NOAA 11936 on 26-Dec-2013 at 16:30 UT is:
S17E34, ( -523", -254" )
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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
Solar activity has returned to a low level. NOAA 11928 has now rotated
over the South West limb, having previously displayed beta-gamma/D-type
sunspot group characteristics. This region continued to produce C-class
activity, totaling 4 C-class events since yesterday's message (including
the largest magnitude flare, a C4.7 on 25-Dec-2013 at 06:34 UT). Further
C-class events are probable over the following 24 hours, with a small
chance for an isolated low M-class flare before the higher-lying loops
of NOAA 11928 rotate completely beyond the limb.
The position of NOAA 11928 on 25-Dec-2013 at 13:00 UT is:
S16W90, ( 937", -269" )
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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
Solar activity has decreased to a low-to-moderate level. NOAA 11928
has rotated close to the South West limb over the past 24 hours. This
region appears to be decreasing in spot area and number of spots, but
some of this may be due to limb foreshortening effects. 11928 remains
the largest and most complex region on the visible disk (designated a
beta-gamma/E-type sunspot group classification by NOAA) and continues
to produce C-class activity (a total of 4 C-class flares in the past
24 hours, the largest being a C5.3 on 23-Dec-2013 at 15:49 UT). More
C-class flares are expected, with a reasonable chance for an isolated
low M-class flare before NOAA 11928 rotates completely over the limb.
The position of NOAA 11928 on 24-Dec-2013 at 11:00 UT is:
S16W80, ( 924", -263" )
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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
Solar activity is at a moderate-to-high level. NOAA region 11928 has
decreased in spot area and number of spots in the past 24 hours, but
remains the largest and most complex region on disk (designated as a
beta-gamma/E-type sunspot group). 11928 has produced five low M-class
events over the previous 24 hours, the largest being an M3.3 flare on
22-Dec-2013 at 15:06 UT and the most recent being an M1.6 flare on
23-Dec-2013 at 08:59 UT. Further low M-class events are likely, with
a small chance for a flare >= M5 in the next 24 hours.
The position of NOAA 11928 on 23-Dec-2013 at 14:30 UT is:
S17W69, ( 872", -274" )
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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
The current level of solar activity is moderate. NOAA
11934 was responsible for an M1.6 event on
22-Dec-2013 at 14:38 UT. Yesterday's target (NOAA
11928) was released a many C-class events as well
as a M1.9, M1.1, and M3.3 flare on 22-Dec-2013 at
08:11, 08:37, and 15:12 UT, respectively. The region
has increased in sunspot area within its North-Eastern
portion and its central mixed polarity spot has
strengthened. High C-class activity it expected, while
further M-class events are likely.
The position of NOAA 11928 on 22-Dec-2013 at 18:50 UT is:
S17W57, ( 787", -269" )
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)
Dear RHESSI Collaborators,
The current level of solar activity is moderate. Yesterday's
target (NOAA 11931) has remained quiescent since the
previous message. On the other hand, NOAA 11928
released a series of C-class events, the largest of which
was a C9.2 flare on 21-Dec-2013 at 10:36 UT. The region
has emerged new flux in its intermediate portion, resulting
in a strong gamma magnetic configuration, and shows
multiple elongated polarity separation lines. Furthermore,
the region exhibits a mixed polarity spot at its center.
Further high C-class activity is expected, with a chance
for an M-class flare.
The position of NOAA 11928 on 21-Dec-2013 at 19:10 UT is:
S17W42, ( 632", -265" )
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)
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)
Dear RHESSI Collaborators,
The current level of solar activity is low. A newly emerged
region, designated as NOAA 11930, was responsible for
low C-class activity. However, yesterday's target region
(NOAA 11928) continued to emerge flux, and now exhibits
a mixed polarity spot in its intermediate portion. So far,
the region was responsible for C-class activity, including
the largest event since the previous message (a C2.2 on
19-Dec-2013 at 15:35 UT). Further C-class activity is
expected with a chance for a low M-class flare.
The position of NOAA 11928 on 19-Dec-2013 at 18:10 UT is:
S15W15, ( 245", -229" )
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)
MM#009 Default HESSI Target
Dear RHESSI Collaborators,
The target EFR now numbered NOAA 1928 developed
significantly and is currently the most complex region on
the visible solar disk displaying a D-type/beta-gamma
sunspot group. The largest event since the last message
was a C4.0 at 12/17/23:29 UT. Its source was a region
on the southeastern limb in the location of returning old
NOAA 1913. The region is too close to the limb to ascertain
its magnetic configuration.
The position of NOAA 1928 on December 18 at 16:30 UT is:
S15W02 (Solar X = 033", Solar Y = -230")
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,
Bill Marquette (Helio Research)
Dear RHESSI Collaborators,
The current level of solar activity is low. The largest
event since the previous message was a C3.1 flare
on 16-Dec-2013 at 21:33 UT, released by NOAA 11927,
a tiny bipole that emerged on the southern boundary
of NOAA 11917. But, over all the region (11917 and
11927) continues to decay. A new region is rapidly
emerging at ~S05E15, and appears to be growing in
X-ray activity. The target region is now designated
as the new region. Low C-class activity is expected,
with a chance for a moderate C-class event.
The position of the new region on 17-Dec-2013 at 18:10 UT is:
S05E14, ( -237", -65" )
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)