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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0363

High Resolution Multi-Wavelength Study of Solar Pores

plan term


@ @


 name : Verma, Denker, Wang, Liu, Yurchyshyn @  e-mail : mverma[at]aip.de

contact person in HINODE team

 name : Tarbell, Shine @  e-mail : tarbell[at]lmsal.com, shine[at]lmsal.com

 abstract of observational proposal
Scientific Justification: The main objective of this observing proposal is to compare small-scale magnetic and flow fields in the vicinity of pores in different environments and at various stages of evolution. The need to understand the different mechanisms responsible for the formation of quiet-Sun and active region pores motivates this work. The thin, dark lines, so-called ghairsh are often seen extending from the pores to the closest neighboring granules (Scharmer et al. 2002, Nature 420, 151). What are the implications of such corrugated boundaries for the stability of flux tubes? Are they a first indication of penumbra formation?

The 1.6 m Godde Solar Telescope (GST) at Big Bear Solar Observatory will be furnishing high-resolution images in G-band (Broad-band Filter Imager, BFI) with the spectra in H and Ca II NIR from Fast Imaging Solar Spectrograph (FISS) covering chromospheric layers. The photospheric magnetic field information would be obtained using 1565 nm spectropolarimetric spectra from Near-infrared Imaging Spectro-polarimeter (NIRIS). From Hinode we will be requesting SOT/SP Sepctropolarimetric data in 6302.05 nm line.

 request to SOT
SOT SP, Normal map mode, 100'' x 164'', cadence 1 hour

 request to XRT

 request to EIS

 other participating instruments

Dates: 3/10/2018 - 10/10/2018, 8 days. We would request for re-pointing during the run, as our targets of interest are two types of pores (1) isolated pore in the network and (2) pore in an active region. If possible, we would like to follow the same target throughout the observing run.

Time window: Observations at BBSO starts at 15:00 UT. The requested time window is 3 hours from 15:00- 18:00 UT with SP maps every hour (3 maps) as the cadence of requested SP scan is about 52 minutes. If possible, we would like to extend the observations further to 20:00 UT.

Target(s) of interest: Two types of pores: If present on solar disk, we would prefer to have observations of solar pore either isolated (in a network) or near an active region, or both. A scan should ideally be centered on the pore.

HOP 0287 - M. Verma, C. Denker, F. Böhm, H. Balthasar, C. Fischer, C.
Kuckein, et al., 2016, Flow and Magnetic Field Properties in the Trailing
Sunspots of Active Region NOAA 12396, Astronomische
Nachrichten/Astronomical Notes 337, 1090

HOP 0315 - M. Verma, C. Denker, H. Balthasar, C. Kuckein

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