HOP 0455

abstract of observational proposal

Main Objective: We propose a joint observing campaign using both Hinode/EIS, Solar Orbiter and ALMA in order to investigate the physical processes involved in the release of the slow solar wind at active region or coronal hole boundaries.

Scientific Justification: Coordination of Hinode/EIS with SO/SPICE observations taken during the slow solar wind connection SOOP observation window (between 30/03/2023 00 UT and 01/04/2023 23:52 UT, ~ 3 days) are requested to investigate and link composition of a solar wind source region using a range of composition diagnostics to plasma detected in situ.

Similar to IHOP 434 with updated dates/times and observation studies detailed below.

request to XRT

Exact details to be coordinated with the chief planner.
AR Boundary:
Alternate between temperature and dynamics study. Two filter observations (Al-poly and thin-Be) with 2 minute cadence and FOV 384” x 384”. Run as often as possible in coordination with EIS.
CH Boundary:
Dynamics study. Al-Poly with 30s cadence and FOV of 384” x 384”. Run as often as possible in coordination with EIS.

request to EIS

Exact details to be coordinated with the chief planner.
Pointing: disk observation of either upflows at an active region boundary or a coronal hole boundary.

Active region boundary:
When SO/SPICE runs SPICE_SPECRESP, Hinode/EIS runs Spectral atlas, Atlas_60 (ID 404, FOV:
120"x160”, Exp: 60s, Dur: 65 mins, Tel: 257 Mbits)
At any other time, during the rest of the observing window when SO/SPICE runs DYNAMICS, Hinode/EIS runs Abundance raster DHB_007_v2 (ID: 600, FOV: 246”x512”, Exp:60s, Dur: 68 mins, Tel: 114 Mbits). Please run as many times as possible.
Coronal hole boundary:
When SO/SPICE runs SPICE_SPECRESP, Hinode/EIS runs Spectral atlas, Atlas_120 (ID: 405, FOV: 120"x160", Exp: 120s, Dur: 128 mins, Tel: 257 Mbits).
At any other time, during the rest of the observing window when SO/SPICE runs DYNAMICS, Hinode/EIS runs HPW021VEL240x512v2_b (ID: 524, FOV: 240”x512”, Exp: 100s, Dur: 215 mins, Tel: 174 Mbits). Please run as many times as possible.

SO/SPICE will run SPICE_SPECRESP during the following time windows:
Mar 30: 00:30 - 04:10 UT
12:30 - 16:10 UT
Mar 31: 00:30 - 04:10 UT
12:30 - 16:10 UT
Apr 1: 00:30 - 04:10 UT
13:40 - 17:20 UT

SO/SPICE will run DYNAMICS during the following time windows:
Mar 30: 04:20 - 12:23 UT
　　　 16:15 -
Mar 31: 00:18 UT
04:20 - 12:23 UT
16:15 -
Apr 1: 00:18 UT
04:20 - 09:10 UT
17:25 - 23:52 UT

In the case of limited telemetry, the order of priority is as follows:
Mar 30: 15:00 - 16:00 UT during the SPICE_SPECRESP EUI/HRI window
Mar 31: 15:00 - 16:00 UT during the SPICE_SPECRESP EUI/HRI window
20:40 - 21:40 UT during the SPICE DYNAMICS EUI/HRI window
Apr 1: 15:00 - 16:00 UT during the SPICE_SPECRESP EUI/HRI window
22:40 - 23:30 UT during the SPICE DYNAMICS EUI/HRI window

EIS Atlas and abundance studies have highest priority, so we are willing to sacrifice XRT observations if there is a possibility of additional telemetry for those observations.

remarks

Dates: Mar 30 - Apr 1, 2023

Time window: 00 - 23:52 UT (~3 days)
Refer to coordination page in Additional Instrument Coordination.

Target(s) of interest: Upflow regions at the boundary of an active region or a coronal hole boundary (on-disk)

Previous HOPs: N/A

Additional remarks:
ALMA will be taking coordinated on-target observations for 1 hour total between 15 and 16 UT. The proposed observation slots are as follows:

Primary slot: March 30, 15-16 UTC Backup time #1: March 31, 15-16 UTC Backup time #2: April 1, 15-16 UTC