2022-03-21T19:24:59.000Z http://sot.lmsal.com Ted Tarbell LMSAL http://lmsal.com 3251 Hanover Rd, O/ADBS, B/252, Palo Alto, CA, 94304 +1-650-424-2400 tarbell@lmsal.com Hinode SOTSP Arikawa Nishimoto DeRosa (RCO) 433 433 null HOP433 (with SolO/PHI) AR AR 12967 Active Region 5 682 242 0 0 2022-03-21T11:16:00.000Z 2022-03-21T12:26:35.000Z 682 242 Sources of slow wind and cross-calibration of the Solar Orbiter Polarimetric and Helioseismic Imager (SO/PHI) Fast map, 328x164", 1-side, Q75, no repeat Coordinated observations with the Solar Orbiter (SO) Polarimetric and Helioseismic Imager (PHI) High-Resolution Telescope (HRT) of a tracked active region (AR) for the identification of sources of slow wind, which will take place in March 2022. The proposed HOP has two goals, namely a cross-calibration goal and a scientific one. The cross-calibration goal is to compare high-resolution SO/PHI-HRT maps with fast maps from SP, when the angular separation between the two spacecraft is relevant for stereoscopic observations. This requires an AR target to fully explore the range of field values, taken at the same time from both telescopes. In conjunction with other dedicated HOPs that request for normal maps (IHOP_Submission_139 and 140 by the same team), this HOP will complement the full cross-calibration by providing comparison with SP-fast maps. The second goal is scientific in nature, namely to support the investigation of sources of slow wind from AR boundaries. The requested SP maps will complement the SO/PHI-HRT ones in providing stereoscopic information for a more accurate determination of the AR magnetic field (e.g., for stereoscopic disambiguation). Details about this specific science SOOP are public and can be found in: https://issues.cosmos.esa.int/solarorbiterwiki/display/SOSP/L_SMALL_HRES_HCAD_Slow-Wind-Connection