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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0404

On the link between outflows observed by BBSO/GST, IRIS, and Hinode/EIS

plan term




 name : Lim, Cho, Madjarska    e-mail : eklim[at]kasi.re.kr, kscho[at]kasi.re.kr, mariamadj[at]gmail.com

contact person in HINODE team

 name : Ugarte-Urra    e-mail : ignacio.ugarteurra[at]nrl.navy.mil

 abstract of observational proposal
Main Objective: Measure Doppler velocities, temperatures, densities, and abundances in a polar coronal hole, Quiet Sun, and their boundary to be compared with the densities, temperatures, and speeds in the extended solar corona seen in coronagraphic images.

Scientific justification: The solar atmosphere is highly structured due to the complexity of coronal magnetic fields. Such complex structures result in differences in temperature and speed of the solar wind. To understand the physical processes of the coronal heating and solar wind acceleration, we investigate the physical characteristics of various chromosphere, transition region, and coronal structures. This includes (1) the footpoints of plumes and inter-plumes in a polar coronal hole, (2) Quiet Sun adjacent to the coronal hole where the plumes originate from. (3) Coronal bright points in the coronal hole on solar disk. Hinode/EIS data will be employed to determines the mass of outflows, temperature, and abundances, as well as the properties of waves and shocks. EUV and coronagraphic images will be used to investigate the response of the upper atmosphere of these coronal base features. To pinpoint such specific regions listed above, we will use the most recent EUV images taken from SDO/AIA and STEREO/EUVI, as well as coronagraphic images obtained from SOHO/LASCO C2/C3 and STEREO/COR1/COR2.

This coordinated observation consists of BBSO (Big Bear Solar Observatory) GST (Goode Solar Telescope), IRIS, and Hinode/EIS. BBSO/GST and IRIS will probe the chromospheric outflows associated with structures observed in coronagraphic images (polar plumes, inter-plumes, and streamers). Hinode/EIS will fill up the gap between the outflows and the solar wind properties.

 request to SOT

 request to XRT
Al_poly, 30 sec cadence

 request to EIS
OBJECTIVE: Doppler velocities, temperatures, densities, and abundances in a polar coronal hole, Quiet Sun, or disk coronal hole.

We suggest the following two study to be run:

ID 214
ACRONYM  gdz_plume1, 50 sec exposure time

ID 512
ACRONYM gdz_plume1_v2, 150 sec exposure

Please run one after the other if there is enough time slot.

POINTING: Fixed pointing on each day. An IRIS raster will cover 63” by 120” and the pointing is needed to be aligned with that of IRIS.

 other participating instruments
IRIS: will support the GST observation from Jul/21 - 27, from 16:00UT to 22:00UT everyday
3600011659 | Large sparse 64-step raster 63x120 64s Si IV Deep x 15 | 1084.22 | 1246.00 | 0.78 | 16.9+/-0.0 | 1084+/-0 | 0.0+/-0.0 | 16.9+/-0.0 | 0.0+/-0.0 | 0.0+/-0.0


07/18(Sat) - 21(Tue) : (PI) Eunkyung Lim
                         - VIS, TiO, NIRIS + IRIS +EIS : CBPs, Spicules
  22(Wed) - 24(Fri) : (PI) Kyungsuk Cho
                         - VIS, TiO, NIRIS + IRIS : CH plumes
  25(Sat) - 27(Mon) : (PI) Kyungsuk Cho
       -                 - FISS, TiO, NIRIS + IRIS+EIS: CH plumes
  28(Tue) - 31(Fri) : (PI) Eunkyung Lim
                         - FISS, TiO, NIRIS + IRIS+EIS : CBPs, Spicules

・Time period of proposed observations, if required.
 This is the coordinated observation with the ground based GST/BBSO, which has the limited observing time window during the period.

・Observation period : Jul/21 - Jul/27 (UT), 16:00UT - 22:00UT every day.
 Seeing condition at BBSO is better mostly between 16:00UT and 20:00UT, therefore we request
 at least 3-hour continuous observation starting from 16:00UT. 6-hour continuous observation
 from 16:00UT is desired.

・Target of interest.
 Jul/21-27 : CBPs in the CH, near limb, polar coronal hole

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