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Coronal Imaging with the Solar UltraViolet Imager

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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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Acknowledgements

The authors sincerely thank the GOES-R Flight Project for the test campaign, and gratefully acknowledge the assistance of the Lockheed Martin (LM), Palo Alto, CA, SUVI team in the campaign and the analysis. Special thanks to Margaret Shaw, Lawrence Shing, and Ralph Seguin of LM, and Calvin Nwachuku of the GOES-R Mission Operations Support Team for their assistance in this effort.

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Authors and Affiliations

  1. CSEngineering, Annapolis, MD, USA

    Sivakumara K. Tadikonda

  2. ACS Engineering, Clarksville, MD, USA

    Douglas C. Freesland

  3. ASRC Federal Technical Services, Beltsville, MD, USA

    Robin R. Minor

  4. Cooperative Institute for Research in Environmental Sciences, Univ. Of Colorado, Boulder, CO, USA

    Daniel B. Seaton

  5. NOAA National Centers for Environmental Information, Boulder, CO, USA

    Daniel B. Seaton

  6. National Oceanic and Atmospheric Administration, Silver Spring, MD, USA

    Gustave J. Comeyne

  7. NASA Goddard Space Flight Center, Greenbelt, MD, USA

    Alexander Krimchansky

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  1. Sivakumara K. Tadikonda
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  2. Douglas C. Freesland
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  3. Robin R. Minor
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  4. Daniel B. Seaton
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  5. Gustave J. Comeyne
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  6. Alexander Krimchansky
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Correspondence to Sivakumara K. Tadikonda.

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This article belongs to the Topical Collection:

Solar Wind at the Dawn of the Parker Solar Probe and Solar Orbiter Era

Guest Editors: Giovanni Lapenta and Andrei Zhukov

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Tadikonda, S.K., Freesland, D.C., Minor, R.R. et al. Coronal Imaging with the Solar UltraViolet Imager. Sol Phys 294, 28 (2019). https://doi.org/10.1007/s11207-019-1411-0

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