HOP list   Monthly Events

HINODE Operation Plan (HOP)

accepted on

19-dec-2019


 HOP No.

 HOP title

HOP 0393

Cycle 24/25 equatorial transition

plan term

2019/12/28-2019/12/28
2020/01/04-2020/01/04
2020/01/11-2020/01/11
2020/01/18-2020/01/18
2020/01/25-2020/01/25
2020/02/01-2020/02/01
2020/02/08-2020/02/08
2020/02/15-2020/02/15
2020/02/22-2020/02/22
2020/02/29-2020/02/29
2020/03/07-2020/03/07
2020/03/14-2020/03/14
2020/03/21-2020/03/21
2020/03/28-2020/03/28
2020/04/04-2020/04/04
2020/04/11-2020/04/11
2020/04/18-2020/04/18
2020/04/25-2020/04/25
2020/05/02-2020/05/02
2020/05/09-2020/05/09
2020/05/16-2020/05/16
2020/05/23-2020/05/23
2020/05/30-2020/05/30
2020/06/06-2020/06/06
2020/06/13-2020/06/13
2020/06/20-2020/06/20
2020/06/27-2020/06/27
2020/07/04-2020/07/04
2020/07/11-2020/07/11
2020/07/18-2020/07/18
2020/07/25-2020/07/25
2020/08/01-2020/08/01
2020/08/08-2020/08/08
2020/08/15-2020/08/15
2020/08/22-2020/08/22
2020/08/29-2020/08/29
2020/09/05-2020/09/05
2020/09/12-2020/09/12
2020/09/19-2020/09/19
2020/09/26-2020/09/26
2020/10/03-2020/10/03
2020/10/10-2020/10/10
2020/10/17-2020/10/17
2020/10/24-2020/10/24
2020/10/31-2020/10/31
2020/11/07-2020/11/07
2020/11/14-2020/11/14
2020/11/21-2020/11/21
2020/11/28-2020/11/28
2020/12/05-2020/12/05
2020/12/12-2020/12/12
2020/12/19-2020/12/19
2020/12/26-2020/12/26
2021/01/02-2021/01/02
2021/01/09-2021/01/09
2021/01/16-2021/01/16
2021/01/23-2021/01/23
2021/01/30-2021/01/30
2021/02/06-2021/02/06
2021/02/13-2021/02/13
2021/02/20-2021/02/20
2021/02/06-2021/02/06
2021/02/13-2021/02/13
2021/02/20-2021/02/20
2021/02/27-2021/02/27
2021/03/06-2021/03/06
2021/03/13-2021/03/13
2021/03/27-2021/03/27
2021/04/03-2021/04/03
2021/04/10-2021/04/10
2021/04/17-2021/04/17
2021/04/24-2021/04/24
2021/05/01-2021/05/01
2021/05/08-2021/05/08
2021/05/15-2021/05/15
2021/05/22-2021/05/22
2021/05/29-2021/05/29
2021/06/05-2021/06/05
2021/06/12-2021/06/12
2021/06/19-2021/06/19
2021/06/26-2021/06/26
2021/07/03-2021/07/03
2021/07/10-2021/07/10
2021/07/17-2021/07/17
2021/07/24-2021/07/24
2021/07/31-2021/07/31
2021/08/07-2021/08/07
2021/08/14-2021/08/14
2021/08/21-2021/08/21
2021/08/28-2021/08/28
2021/09/04-2021/09/04
2021/09/11-2021/09/11
2021/09/18-2021/09/18
2021/09/25-2021/09/25
2021/10/02-2021/10/02
2021/10/09-2021/10/09
2021/10/16-2021/10/16
2021/10/23-2021/10/23
2021/10/30-2021/10/30
2021/11/06-2021/11/06
2021/11/13-2021/11/13
2021/11/20-2021/11/20
2021/11/27-2021/11/27
2021/12/04-2021/12/04
2021/12/11-2021/12/11
2021/12/18-2021/12/18
2021/12/25-2021/12/25
2022/02/19-2022/02/19
2022/02/26-2022/02/26
2022/03/12-2022/03/12
2022/03/19-2022/03/19
2022/03/26-2022/03/26
2022/04/02-2022/04/02
2022/04/09-2022/04/09
2022/04/16-2022/04/16
2022/04/23-2022/04/23
2022/04/30-2022/04/30
2022/05/07-2022/05/07
2022/05/14-2022/05/14
2022/05/21-2022/05/21
2022/05/28-2022/05/28
2022/06/04-2022/06/04
2022/06/11-2022/06/11
2022/06/18-2022/06/18
2022/06/25-2022/06/25
2022/07/02-2022/07/02
2022/07/09-2022/07/09
2022/07/16-2022/07/16
2022/07/23-2022/07/23
2022/07/30-2022/07/30
2022/08/06-2022/08/06
2022/08/13-2022/08/13
2022/08/20-2022/08/20
2022/08/27-2022/08/27
2022/09/03-2022/09/03
2022/09/10-2022/09/10
2022/09/17-2022/09/17
2022/09/24-2022/09/24
2022/10/01-2022/10/01
2022/10/08-2022/10/08
2022/10/15-2022/10/15
2022/10/22-2022/10/22
2022/10/29-2022/10/29
2022/11/05-2022/11/05
2022/11/12-2022/11/12
2022/11/19-2022/11/19
2022/11/26-2022/11/26
2022/12/03-2022/12/03
2022/12/10-2022/12/10
2022/12/17-2022/12/17
2022/12/24-2022/12/24
2022/12/31-2022/12/31
2023/01/07-2023/01/07
2023/01/14-2023/01/14
2023/01/21-2023/01/21
2023/01/28-2023/01/28
2023/02/04-2023/02/04
2023/02/11-2023/02/11
2023/02/18-2023/02/18
2023/02/25-2023/02/25
2023/03/04-2023/03/04
2023/03/11-2023/03/11
2023/03/18-2023/03/18
2023/03/25-2023/03/25
2023/04/01-2023/04/01
2023/04/08-2023/04/08
2023/04/15-2023/04/15
2023/04/22-2023/04/22
2023/04/29-2023/04/29
2023/05/06-2023/05/06
2023/05/13-2023/05/13
2023/05/20-2023/05/20
2023/05/27-2023/05/27
2023/06/03-2023/06/03
2023/06/10-2023/06/10
2023/06/17-2023/06/17
2023/06/24-2023/06/24
2023/07/01-2023/07/01
2023/07/08-2023/07/08
2023/07/15-2023/07/15
2023/07/22-2023/07/22
2023/07/29-2023/07/29
2023/08/05-2023/08/05
2023/08/12-2023/08/12
2023/08/19-2023/08/19
2023/08/26-2023/08/26
2023/09/02-2023/09/02
2023/09/09-2023/09/09
2023/09/16-2023/09/16
2023/09/23-2023/09/23
2023/09/30-2023/09/30
2023/10/07-2023/10/07
2023/10/14-2023/10/14
2023/10/21-2023/10/21
2023/10/28-2023/10/28
2023/11/04-2023/11/04
2023/11/11-2023/11/11
2023/11/18-2023/11/18
2023/11/25-2023/11/25
2023/12/02-2023/12/02
2023/12/09-2023/12/09
2023/12/16-2023/12/16
2023/12/23-2023/12/23
2023/12/30-2023/12/30
2024/01/06-2024/01/06
2024/01/13-2024/01/13
2024/01/20-2024/01/20
2024/01/27-2024/01/27
2024/02/03-2024/02/03
2024/02/10-2024/02/10
2024/02/17-2024/02/17
2024/02/24-2024/02/24
2024/03/02-2024/03/02
2024/03/09-2024/03/09
2024/03/16-2024/03/16
2024/03/24-2024/03/24
2024/03/31-2024/03/31
2024/04/06-2024/04/06
2024/04/13-2024/04/13
2024/04/20-2024/04/20
2024/04/27-2024/04/27

@ @

proposer

 name : Egeland, Bryans, Centeno @  e-mail : egeland[at]ucar.edu, pbryans[at]ucar.edu, rce[at]ucar.edu

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: Capture the magnetic and chromospheric signatures of the transition between cycle 24 and 25.

Scientific Justification: Small magnetic features and coronal bright points have been shown to indicate the bands of activity associated with the solar cycle. The precise location of these bands is important for predicting the timing of solar minimum and, more generally, the long-term variability of the Sun.

The termination of equatorward-propogating activity bands at the solar equator has been identified as a key event of the solar cycle (McIntosh et al. 2014, McIntosh & Leamon 2017, McIntosh et al. 2019). Using the record of cycle 24 activity, Leamon et al. 2019 have predicted the cycle 24/25 terminator event to occur in May 2020, with +5 month/-1.5 month uncertainty.  SDO observations of the previous cycle 23/24 terminator event showed a nearly step-function-like increase in coronal bright point density and emission in various SDO/AIA bandpasses in the high-latitude, new cycle bands when compared to the low-latitude, old cycle bands.  The flux changes across the terminator event were found to increase in proportion to the temperature of formation of the radiation.
We propose a new set of synoptic observations of the solar equator to complement the high-latitude observations of IHOP 336 ("Cycle 25 Bright Points") in order to capture the solar cycle 24/25 terminator event.  Hinode SP measurements will give us high resolution vector field data, and IRIS will show the chromospheric spectral signature of the bright points, characteristics that are not available with SDO/AIA and HMI.  As a complement to the IHOP 336 dataset, we aim to find comparative differences between the developing activity of the new solar cycle with the diminishing activity of the old solar cycle around the time of transition.

McIntosh, S. W., et al., 2014, ApJ, 792, 12
McIntosh, S. W. & Leamon, R. J., 2017, Frontiers in Astronomy and Space Sciences, 4, 4
McIntosh, S. W. et al., 2019, Solar Physics, 294, 7, 88
Leamon et al. 2019, Solar Physics, submitted [arXiv:1909.06603]

 request to SOT
SOT requests:  
---------- brief instruction (general) -----------
ID: 0x1ce (Normal 320"x82")
One full resolution, full width, half slit (512 px), normal map centered on the central meridian and the solar equator (latitude 0N).  The SSW command hel2arcmin (see an example below) may be used  to convert from 0N degrees latitude
to arcsec (divide by 60).  Corrections should be made for the SOT offset.

print,hel2arcmin(0,0,date='2023-feb-11T00:00:00')*60

NOTE TO COs:  Run once per week, at a cadence equivalent to HOP 336.  Simultaneous observations with HOP 336 are not required.  Although tracking curves are preferred for these observations, if there are not enough available, this map should be run with fixed pointing.

---------- additional instruction (in eclipse season) -----------
ID: 0x12c (Fast Map, Full FOV)
During eclipse season, please run a full width, full height fast map at the same pointing, instead of the normal maps. Each of these should run twice, in 2 consecutive orbits, for redundancy. Full height is requested because SOT offsets in Y are large and slightly uncertain during eclipse season.

 request to XRT
single filter Al_poly long/short pairs 384x384 FOV

 request to EIS
ST_ID: 453
  FOV: 180" x 512",   Exp.: 60s,   Dur.:  1h5m20s

 other participating instruments
IRIS requests:  
Timing: This is in coordination with Hinode and should be run every week. Try to follow the timing of Hinode as closely as possible, but priority should be given to avoiding SAA periods over having observations at precisely the same times as Hinode.

Pointing: IRIS will have 3 pointing positions, to cover roughly the same FOV as SOT, with Solar-X (arcsec) at -100, 0, 100. Solar-Y should be the same for all 3 pointings, centered at the equator at the central meridian. The SSW command hel2arcmin may be used to convert from 0N degrees latitude to arcsec (divide by 60).

High data rate: 3620258076 | Large dense 320-step raster 105.3x120 320s Deep x 8 FUV spectrally | 2993.20 | 3785.93 | 0.9 | 9.4+/-0.1 | 2993+/-0 | 37.4+/-0.0 | 37.4+/-0.0 | 37.4+/-0.0 | 37.4+/-0.0

Low data rate: 3620108076 | Large dense 320-step raster 105.3x120 320s Deep x 8 Spatial x 2, Spe | 2932.08 | 1268.12 | 0.3 | 9.2+/-0.1 | 2932+/-0 | 36.7+/-0.0 | 36.7+/-0.0 | 36.7+/-0.0 | 36.7+/-0.0

If the timing clashes with the normal science full-disk mosaic, then it is fine to skip this calibration - this IHOP can also use the full-disk mosaic data for its goals.  If running the calibration mosaic (Q31_FD_mosaic_calibration_09oct14 - run twice/year, just before and after eclipse season) then please do a separate run of this IHOP; the calibration mosaic does not work for this program.

 remarks
Dates:  Weekly observations of an equatorial band from Jan 1 2020 to Dec 31 2020 are required. Weekly observations of an equatorial band from Jan 1 2021 to Jun 30 2021 are desired.

Time window:  Coordination with IRIS is desired, observations within the same 24 hour interval is required. Short interruptions (eclipse season or other) are allowed.

Target(s) of interest:  Quiet Sun or active regions in the equatorial region centered on the central meridian.

Previous HOPs:  
PI Egeland has no prior HOP submissions.

Additional remarks: This IHOP request is a solar equator complement to the high-latitude observations of IHOP 336 running since Mar 2017.  Although specifically aimed to capture the transition between cycle 24/25, they will also be valuable as a comparison dataset to the ongoing IHOP 336 observations.

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