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HINODE Operation Plan (HOP)

accepted on


 HOP No.

 HOP title

HOP 0157

HOP from ISSI group on Chromospheric Flares

plan term


@ @


 name : Milligan, Fletcher @  e-mail : ryan.o.milligan[at]nasa.gov

contact person in HINODE team

 name : Culhane @  e-mail : jlc[at]mssl.ucl.ac.uk

 abstract of observational proposal
From Ryan Milligan and Lyndsay Fletcher:

We wish to put to together a Hinode HOP that would provide data to be used by Lyndsay Fletcher's ISSI group on Chromospheric Flares: http://www.issibern.ch/teams/solarflares with the scientific motivation being to use multi-wavelength observations of the flaring chromosphere to compare with detailed models of hydrodynamics and radiative transfer. In doing so we hope to determine the depth at which the energy is deposited, its temporal evolution and dynamic response. In addition to CDS and EIS (and SOT and XRT), we would also wish to include RHESSI and TRACE, as well as ground based instruments such as ROSA.

 request to SOT
SOT should run full Ca II and WL observations with 2-3 minute cadence.

 request to XRT
XRT could alternate between the thin Al poly and the Al thick filters for context images.

 request to EIS
For EIS we wish to use the new FLR001 study, which comprises the He II, Fe VIII, Fe XIV (density sensitive pair), Fe XVII and Fe XXIV lines. This sequence rasters in < 5 minutes with a 80"x120" FOV.

 other participating instruments
CDS/SoHO: For CDS we wish to run the FLARE_AR observing sequence, which comprises the He I, O V, Mg X, Fe XVI and Fe XIX lines. The sequence has a 180"x180" FOV with ~11 minute raster cadence.

TRACE: With TRACE we would like a sequence of 1216, 1600 and WL images with as high a cadence as possible. We are, however, aware that cross-calibration with SDO may currently take precedence at this time.

RHESSI: RHESSI will be included in play, taking full-disk observations each orbit.

The target should be a flare producing active region (> C class) as designated by the Max Millennium Chief Observers. The HOP should be run when the region is within } 3 days of the central meridian, and for as long as possible each day. We believe that under the current telemetry allocations, the above combination of Hinode observations could be run for ~16 hours per day.

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