Planning week 3-10 Mar 2012

At the start of the week AR 11429 appeared over the NE limb and immediately produced a M-flare. Observations were thus concentrated on this region. A Major Flarewatch was called on 5 March. Significant flares from AR 11429 during the week occurred at:

2 Mar 17:29, M3.3
4 Mar 10:29, M2.0
5 Mar 02:30, X1.1
5 Mar 19:10, M2.1
5 Mar 19:27, M1.8
6 Mar 12:23, M2.1 (EIS?)
6 Mar 21:04, M1.3 (EIS - yes)
7 Mar 00:02, X5.4 (EIS - no)
9 Mar 03:22, M6.3 (EIS?)

At the end of the week (9, 10) operations had to be cancelled due to a satellite avoidance maneuver.

Flare hunting tips

Scheduling the flare hunting can be complicated because of the following factors:

The hunter study runs for multiples of one hour. The response study runs for one hour.

Consider for example the inter-synoptic period which is usually about 11h 30m. My solution was to schedule the hunter study for 5 hours, leave a gap of 20 min, and then schedule the hunter again for 6 hours. Note that the hunter tends to run 2.5 min faster than predicted, so the gap will actually be more like 30-35 min. This gap lowers the possibility of the response wiping out the next hunter, but also doesn't leave much gap in the coverage.

Saturday 3 March (OP 1)

AIA 193 image

I used up all of the EIS telemetry running FLAREDOP_EIS (J. Brosius sit-and-stare study) during the period 09:50-23:50 UT on 3 March. The first run began at 09:50 and consisted of three context rasters sandwiched with repeats of FLAREDOP_EIS. After the XRT synoptic, FLAREDOP_EIS was run again at 18:27.

Note that Hinode had fixed pointing during this time-frame. I adjusted each FLAREDOP_EIS for solar rotation based on STEREO-B images.

Update: No big flares took place during this period, but the study should have caught a long duration C2 flare at about 18 UT.

Sunday 4 March (OP1)

No observations today.

Monday 5 March (OP 1)

No observations today.

Tuesday 6 March (OP2)

AIA 193 image

FLAREDOP_EIS was run again on AR 11429 during 09:43-12:57.

The flare hunter study (Flare266_Hunter01) was run for the following periods:

6th: 09:45-13:41 (caught the M2 flare? - yes)
6th: 18:41-04:40 (caught the X5 flare? - no)

The first of these was interrupted at 12:38, and so it must have caught the M2 flare near this time. The second of these was interrupted at 21:10, catching a M1 flare.

Wednesday 7 March (OP 2)

AIA 193 image

Flare hunting continued until 04:40 today, and a further run was scheduled for 06:12-16:11. No flares occurred during this latter period.

FLAREDOP_EIS was scheduled for the period 18:15-21:22. It may have caught a weak C flare. UPDATE: yes, Jeff has studied the data and it seems to have caught a C1 flare at 18:50.

A final flare hunting run was scheduled for 21:30-05:29 (may have caught a C5 flare at about 03:00? - no).

Thursday 8 March (OP 2 & OP 3)

AIA 193 image

Flare hunting from OP 2 continued until 05:29 today.

The plan for OP 3 was affected by preparations being made for a possible satellite avoidance maneuver. Hinode will approach within 114 m of another satellite and so a maneuver may have to be made. The decision will not be made until 9 March, after I have completed the OP 3 plan.

All observations prior to 4 UT on 9 March are safe and will not be disrupted. A gap has been left between 4 and 9 UT (for possible revised plan upload) and all observations after 9 UT are at risk of cancellation if the maneuver goes ahead. UPDATE: the maneuver went ahead and so operations after 9 UT were cancelled.

Prior to a maneuver a sensitivity monitoring study needs to be run and so SYNOP006 was scheduled at 09:38 UT on 8 March.

AR 11429 was tracked with the study CORE_FLARE_TR120x120 (Del Zanna) for the periods 13:45-17:58 and 18:18-03:02 UT.

Friday 9 March (OP 3)

AIA 193 image

A spectral atlas (Atlas_30) of AR 11429 was scheduled at 03:09. This study caught a M6 flare.

UPDATE: the spacecraft maneuver went ahead and so subsequent operations were cancelled.

Saturday 10 March (OP 3)

No operations today due to spacecraft maneuver.