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HINODE Operation Plan (HOP)

accepted on

23-feb-2023


 HOP No.

 HOP title

HOP 0462

[SOOP: Boundary Expansion] Hinode/EIS support for Solar Orbiter during CH Boundary Expansion

plan term

2023/04/09-2023/04/09

@ @

proposer

 name : Ngampoopun, Spadaro, Baker, Brooks @  e-mail : nawin.ngampoopun.21[at]ucl.ac.uk, daniele.spadaro[at]inaf.it, deborah.baker[at]ucl.ac.uk, dhbrooks.work[at]gmail.com

contact person in HINODE team

 name : Savage, Watanabe, De Pontieu @  e-mail : sabrina.savage[at]nasa.gov, watanabe.tetsuya[at]nao.ac.jp, bdp[at]lmsal.com

 abstract of observational proposal
Main Objective:
Hinode/EIS support for Solar Orbiter/METIS Observation taken during CH-Boundary-Expansion SOOP campaign on 9 April 2023

Scientific Justification: We request support from Hinode/EIS for Solar Orbiter observing campaign focusing on the dynamic of
coronal hole boundaries (CH Boundary Expansion SOOP), which will take place on 9th April 2023. Coronal hole boundaries are regarded as one of the sources of the slow solar wind, which is one of the open questions in heliophysics. The main aim of this observation is to investigate overexpanded coronal hole boundaries as slow solar wind sources, focusing on three particular questions.

1. Does slow wind originate from the over-expanded edges of coronal holes?
2. Does slow and intermediate solar wind originate from coronal loops outside of coronal holes?
3. Abundance of minor ions as a function of height in the corona as indicators of slow or fast wind

Solar Orbiter will be at 0.3 AU from the Sun and at the angle of 60 degree west from the Sun-Earth line. The observation is led by METIS, a coronagraph covering the distance between 1.75 to 4 solar radii, complemented by EUI, PHI and SPICE instruments. Hinode/EIS can contribute by studying the plasma properties, such as plasma composition and velocity, at the inner solar corona at the base of the region observed by METIS. In particular, we will have a chance to observe plasma in the inner and outer corona by using the combination of EIS with METIS and SPICE with LASCO C2 in this campaign.

 request to SOT
None

 request to XRT
Dynamics study. Thin Al-Poly with 30s cadence and FOV of 384h x 384h. Run as often as possible in coordination with EIS if telemetry allows.

 request to EIS
Perform two consecutive column mosaics: one with active region study and one with coronal hole study.
Pointing: North-South strip centre at approximately 30 degrees east from central meridian as viewed from Earth, correspond with the eastern limb seen from Solar Orbiter. The pointing remains at 30 degrees east for the second column (i.e., no tracking).
Active Region Study:
Run Abundance raster DHB_007_v2 (ID: 600, FOV: 246hx512h, Exp:60s, Dur: 68 mins, Tel: 114 Mbits).
Coronal Hole Study:
Please run study #642 ch_bound_240x512v1 (modified version of HPW021VEL240x512v2_b (ID: 524).
We are willing to sacrifice XRT observations for additional telemetry.

 other participating instruments
IRIS requests: None
Additional instrument coordination: Solar Orbiter [SOOP: L_BOTH_HRES_LCAD_CH-Boundary-Expansion]
https://issues.cosmos.esa.int/solarorbiterwiki/display/SOSP/Solar+Orbiter+Planning+-+for+coordination+with+external+parties

 remarks
Dates: 2023-04-09 (one day), in coordination with CH-Boundary-Expansion SOOP

Time window: 00:00 UT to 23:59 UT. Continuous observation is preferred

Target(s) of interest: North-South Strip across the solar disk, centred at approximately 30 degrees east (-30 degrees) from the central meridian.

Previous HOPs: None by primary proposer

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