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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0362

The role of chromospheric jets for the heating of plages

plan term




 name : Kitai, Asgari-Targhi, UeNo    e-mail : kitai[at]kwasan.kyoto-u.ac.jp, masgari-targhi[at]cfa.harvard.edu, ueno[at]kwasan.kyoto-u.ac.jp

contact person in HINODE team

 name : Sekii    e-mail : sekii[at]solar.mtk.nao.ac.jp

 abstract of observational proposal
Main Objective: Chromospheric jets and photospheric magnetic fields in plage regions

Scientific Justification: The main purpose is spectroscopically revealing the role of chromospheric jets for the heating of plages by investigating time variation of chromospheric absorption lines around fine structures in plages.

Chromospheric lines (CaII, MgII, H-alpha) are observed with spectroscopes of IRIS and Hida/DST. The chromospheric temperature will be derived from CaII and MgII, and velocity field will be  derived from H-alpha.

On the other hand, photospheric magnetic fields under jets are observed with HINODE/SOT.

 request to SOT
SP (fast map)       164"x 164" (30min) once/hr

 request to XRT
512"x512"/30sec  75Mb/hr

 request to EIS
Please run the following program at the start and the end of the time-window of IHOP0362 with only one-scan respectively: CAM_ARTB_RHESSI_b_2: 40x120" /200sec, exp=10sec

During the time-window, please repeat the following program continuously: DRW_Alf_01_2: 12x152" /60sec, exp=10sec

However, if very bright plage appears, we may ask to repeat
"SK_AR2_50x240p: 50x240" /106sec, exp=2sec"
instead of "DRW_Alf_01_2"

 other participating instruments
3620508703  |  Large sit-and-stare 0.3x120 1s  Mg II h/k   Mg II w s Deep x 8  FUV sp  |      55.55    |      58.89    |       0.7     |  9.3+/-0.1 |  9.3+/-0.1 |  0.0+/-0.0 |  0.0+/-0.0 | 11.3+/-4.1 | 55.5+/-0.0

FUV binning:
4 is OK.  (No binning in the NUV)

It is better that there is more overlap of the slit and plage (bright network).
Additional instrument coordination:  

DST/HIDA (Domeless Solar Telescope (DST) at Hida Observatory):
* H-alpha 9 wavelength filtergraph:
Wavelength: -0.8, -0.6, -0.4, -0.2, 0.0, +0.2, +0.4, +0.6, +0.8 A, Time cadence: about 5 sec  
* Multi-lines spectro-heliograph: CaII K, CaII 854nm, H-alpha, Scan width: about 50 arcsec, Time cadence: about 10 sec

Dates: 1. 2022/07/18 00:00UT - 2022/07/23 03:00UT,
              2022/08/29 00:00UT - 2022/09/03 03:00UT
2. Minimum observation days: 6 days (3 days/week)
3. Continuity: It is not necessary for observations to be on consecutive days.

Time window:  
1. Time window: 00:00 - 03:00 UT = morning in Japan (if possible, 00:00 - 06:00UT)  
2. Short interruptions can be allowed.

Target(s) of interest:  Time variation of temperature and turbulence around chromospheric jets and spatial distribution of photospheric magnetic fields in plage regions

Previous HOPs:  
HOP 0075, 0128, 0275, 0291, 0322, 0378

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