HOP 0514

contact person in HINODE team

name :

Kobelski, Duncan, Watanabe, De Pontieu, DeRosa/Shine, Reeves/Testa, Matthews/Culhane

e-mail :

adam.kobelski[at]nasa.gov, jessie.m.duncan[at]nasa.gov, tet_watanabe[at]jcom.zaq.ne.jp, bdp[at]lmsal.com, derosa[at]lmsal.com, shine[at]lmsal.com, joten.okamoto[at]nao.ac.jp, kreeves[at]cfa.harvard.edu, ptesta[at]cfa.harvard.edu, masumi.shimojo[at]nao.ac.jp, sarah.matthews[at]ucl.ac.uk, j.culhane[at]ucl.ac.uk

abstract of observational proposal

Main Objective: Upflow region at AR border

Scientific Justification: The upflow regions at the boundaries of active regions may be potential sources of the slow solar wind. However, the mechanisms driving plasma flow in these coronal upflow regions and the underlying layers of the solar atmosphere remain open questions. This study aims to understand the mechanisms responsible for plasma upflow at the borders of coronal active regions. To achieve this, we propose coordinated observations involving Solar Orbiter, DKIST, IRIS, and Hinode.

request to XRT

We would like to run the Be-thin filter at 30s cadence (or less), during the co-observation with DKIST from 19:00 to 20:00UT on 23 September 2025, if telemetry allows the observation should be extanded to 18:00 -22:00 UT we would like to run the Al/poly filter at 30s cadence (or less), during the co-observation with DKIST from 19:00 to 20:00UT, if telemetry allows the observation should be extanded to 18:00 - 22:00 UT

request to EIS

We would like observation mode: HH_AR+FLR_RAS_N03 (66 Mbits, 79.04 kBits/s), FOV: 240" x 240", exp. time: 5 sec; 2" slit; at least core spectral lines; continuous raster; the observation mode should be repeated continously at least between 19:00 and 20:00 UT on 23 September 2025; if telemetry allows the observation should be repeated between 18:00 and 22:00 on 23 September 2025.

other participating instruments

IRIS requests:
For the high-resolution observations:
(Very-high telemetry)
3404107643 | Very large coarse 16-step raster 30x175 16s Si IV Deep x 4 Spatial x | 86.27 | 123.81 | 0.98 | 5.4+/-0.0 | 86.3+/-0.0 | 0.0+/-0.0 | 5.4+/-0.0 | 0.0+/-0.0 | 0.0+/-0.0

(High telemetry)
3424107643 | Very large coarse 16-step raster 30x175 16s Si IV Deep x 4 Spatial x | 85.63 | 102.59 | 0.82 | 5.4+/-0.0 | 85.6+/-0.0 | 0.0+/-0.0 | 5.4+/-0.0 | 0.0+/-0.0 | 0.0+/-0.0

(Low telemetry)
3424107642 | Large coarse 16-step raster 30x120 16s Si IV Deep x 4 Spatial x 2, Sp | 85.41 | 63.50 | 0.50 | 5.3+/-0.0 | 85.4+/-0.0 | 0.0+/-0.0 | 5.3+/-0.0 | 0.0+/-0.0 | 0.0+/-0.0

For the extended phase of observations:

(High telemetry)
3420607477 | Very large dense 320-step raster 105.3x175 320s Si IV Mg II h/k Dee | 1648.48 | 1581.47 | 0.65 | 5.2+/-0.1 | 1649+/-0 | 0.0+/-0.0 | 10.3+/-0.0 | 10.3+/-0.0 | 0.0+/-0.0

(Low telemetry)
3420607476 | Large dense 320-step raster 105.3x120 320s Si IV Mg II h/k Deep x 4 | 1643.20 | 947.40 | 0.39 | 5.1+/-0.1 | 1643+/-0 | 0.0+/-0.0 | 10.3+/-0.0 | 10.3+/-0.0 | 0.0+/-0.0

Additional instrument coordination:
SOOP:R_SMALL_HRES_HCAD_RS-burst;
https://s2e2.cosmos.esa.int/confluence/display/SOSP/Solar+Orbiter+Planning+-+for+coordination+with+external+parties

remarks

Time window: Minimum duration time window: 23 September 2025 19:00 UT - end time: 23 September 2025 20:00 UT containting coordinated observation with DKIST, Solar Orbiter (high-resolution instruments) and IRIS; Extended time windows: 23 September 2025 18:00 UT - end time: 23 September 2025 22:00 UT containting coordinated observation with DKIST and IRIS. Short interruptions during minimum duration time window are not recommended, but during extended time window are allowed.

Target(s) of interest: Upflow region at an active region borders, close to disk centre

Previous HOPs:
HOP0492- sucessfull coordination of AR and upflow region observation using IRIS, Hinode and Solar Orbiter. The highest temporal cadence observation of Solar Orbiter EUI/HRI with cadence of 1 sec. DKIST didn't observed due to poor weather condition; HOP0497 -sucessfull coordination of AR and upflow region observation using IRIS, Hinode and Solar Orbiter, DKIST didn't observed due to poor weather condition