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Eruptive Instability of the Magnetic-Flux Rope: Gravitational Force and Mass-Unloading |
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| Authors: | Tsap Y T Filippov B P Kopylova Y G |
| Institution: | 1.CSEngineering, Annapolis, MD, USA ;2.ACS Engineering, Clarksville, MD, USA ;3.ASRC Federal Technical Services, Beltsville, MD, USA ;4.Cooperative Institute for Research in Environmental Sciences, Univ. Of Colorado, Boulder, CO, USA ;5.NOAA National Centers for Environmental Information, Boulder, CO, USA ;6.National Oceanic and Atmospheric Administration, Silver Spring, MD, USA ;7.NASA Goddard Space Flight Center, Greenbelt, MD, USA ; |
| Abstract: | We investigate the coronal imaging capabilities of the Solar UltraViolet Imager (SUVI) on board the Geostationary Operational Environmental Satellite-R series spacecraft. Nominally Sun-pointed, SUVI provides solar images in six extreme ultraviolet (EUV) wavelengths. On-orbit data indicated that SUVI had sufficient dynamic range and sensitivity to image the corona to the largest heights above the Sun to date while simultaneously imaging the Sun. We undertook a campaign to investigate the existence of the EUV signal well beyond the nominal Sun-centered imaging area of the solar EUV imagers. We off-pointed the SUVI line of sight by almost one imaging area around the Sun. We present the details of the campaign we conducted when the solar cycle was at near the minimum and some results that confirm that EUV emission is present to beyond three solar radii. |
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