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HINODE Operation Plan (HOP)

accepted on

20-oct-2022


 HOP No.

 HOP title

HOP 0447

Flows and waves in and around active regions

plan term

2022/10/29-2022/10/29
2022/11/04-2022/11/04

@ @

proposer

 name : Bellot-Rubio, the Solar Orbiter team
@  e-mail : lbellot[at]iaa.es

contact person in HINODE team

 name : DeRosa, Shine @  e-mail : derosa[at]lmsal.com,[at]shine[at]lmsal.com

 abstract of observational proposal
Main Objective: Study flows and waves in and around active regions, from two vantage points.

Scientific Justification: During the sixth remote sensing window of the nominal mission phase, Solar Orbiter will perform two runs of the R_SMALL_HRES_HCAD_Atmospheric_Dynamics_Structure SOOP, where high-cadence observations of an active region will be taken by PHI, EUI and SPICE. The goals of the two runs are as follows:

1. Study flows in and around sunspots, moving magnetic features, flux cancellation at the boundary of sunspot moat and effects in higher atmospheric layers

2. Study waves in active regions at different atmospheric heights

This SOOP offers an opportunity to perform stereoscopic measurements of an active region from two different vantage points using Solar Orbiter, Hinode and IRIS. The Earth-Sun-Solar Orbiter angle will be 38 and 28 degrees, respectively, which is appropriate for magnetic stereoscopy and for determining two components of the velocity vector.

The SOOP is led by PHI, which will take full vector spectropolarimetric measurements at high cadence for several hours at a time. These will be the longest duration time series obtained by PHI thus far. Very high-cadence EUI HRIEUV bursts of one hour are planned during the PHI observations, and fast SPICE rasters will also be taken to improve the coverage of the solar atmosphere.

 request to SOT
SP is the primary instrument for this HOP. We request the following observations:
-------2022-10-29-------
E From 03:04 to 03:35 UT, single fast map, FOV 164h x 123h, for context observation of AR, 230Mbits
E From 03:40 to 06:40 UT, time series of fast maps, FOV 10h x 82h, 2 min cadence, slit centered on umbra of leading spot. Total 900 Mbits.
Priority should be given to the time series of fast maps. If the time series cannot be maintained for 3 hours, select as long a period as possible including the interval 05:00:00 to 06:00:00 (EUI HRIEUV high cadence burst).
-------2022-11-04-------
E From 12:00 to 18:00 UT, time series of fast maps, FOV 5.1h x 82h, 1min cadence, slit centered on umbra of leading spot. Total 1800 Mbits
E From 18:05 to 18:36 UT. One fast map, FOV 164h x 123h, for context observation of AR, 230Mbits
Priority should be given to the time series of fast maps. If telemetry does not allow sustained observations for 6 hours, reduce interval to 3 hours from 13:30:00 to 16:30:00. The absolute minimum would be the interval from 14:30:00 to 15:30:00 UT (EUI high-cadence burst), although this would result in reduced frequency resolution.

 request to XRT
None

 request to EIS
EIS is the secondary instrument for this HOP. We request the following observations:
-------2022-10-29-------
E From 02:30 to 03:30, HPW021VEL260x512v2 (study 569) -> 133 kBits @ JPEG 85, for context
E From 03:30 to 06:40 UT, study 519, sit & stare, slit width 1h, texp 60 s, 25 lines, slit centered on umbra of leading spot.
Priority should be given to the study 519 rasters. If the time series cannot be maintained for 3.17 hours, select as long a period as possible including the interval 05:00:00 to 06:00:00 (EUI HRIEUV high cadence burst).
-------2022-11-04-------
E From 12:00 to 18:00 UT, study 519, sit & stare, slit width 1h, texp 60 s, 25 lines, slit centered on umbra of leading spot. (Backup if S/N is too low with texp 60 s: study 584)
E From 18:00 to 19:00 UT, HPW021VEL260x512v2 (study 569) -> 133 kBits @ JPEG 85, for context
If telemetry does not allow sustained observations for 6 hours, reduce interval to 3 hours from 13:30:00 to 16:30:00. The absolute minimum would be the interval from 14:30:00 to 15:30:00 UT (EUI high-cadence burst), but with reduced frequency resolution.

 other participating instruments
IRIS requests:
A separate proposal will be sent to the IRIS team

 remarks
Time window: We request Hinode observations the following periods:
2022-10-29 T02:00:00 to T06:40:00
2022-11-04 T12:00:00 to T19:00:00

Target(s) of interest: The target will be an active region outside of the disk center, visible from both Solar Orbiter and the Earth. The SP rasters and the EIS sit-and-stare observations should be centered on the umbra of the leading spot.

The final targets will be chosen and communicated to the Hinode team right after the Solar Orbiter Pointing Decision Meetings on 27/10/2022 14:00 UT and 02/11/2022 15:00 UT.

Previous HOPs:
The proposer was the PI of HOP 151 "Flux replacement in the solar network and internetwork". This HOP has resulted in 22 refereed papers, two PhD theses and one Master thesis up to now. A complete list of publications can be found at
https://www.dropbox.com/s/jz4a9txtfg3mqkp/HOP151_productivity?dl=0

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