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    Subsuns and rainbows during solar eclipses

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    Subsun-eclipse-before-proof.pdf
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    Author
    Können, Gunther P
    Schneider, Glenn cc
    Zucker, Evan H
    Lahtinen, Panu
    Affiliation
    Univ Arizona, Steward Observ
    Univ Arizona, Dept Astron
    Issue Date
    2020-07-20
    
    Metadata
    Show full item record
    Publisher
    OPTICAL SOC AMER
    Citation
    Gunther P. Können, Glenn Schneider, Evan H. Zucker, and Panu Lahtinen, "Subsuns and rainbows during solar eclipses," Appl. Opt. 59, F1-F10 (2020)
    Journal
    APPLIED OPTICS
    Rights
    Copyright © 2020 Optical Society of America.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    A photographic observation sequence was obtained of a subsun before, during, and after the total phase of the 2016 solar eclipse. The time-resolved images were obtained from a high-altitude jet aircraft. The image sequence was searched for the possible presence of a solar corona-generated subsun during totality. Although the subsun-creating conditions apparently persisted during totality, the drop in signal intensity compared to the local background prevented its detection. Separately, we document a visual observation from the 1977 total solar eclipse of a rainbow that faded, in the last a few seconds before totality, from being normally multicolored to monochromatic red from water drops then predominantly illuminated by light from the solar chromosphere. A similar transition in the final seconds before, and after, totality is expected to occur for parhelia. The posited short-living monochromatic red parhelion resulting from the momentary illumination of ice crystals by the solar chromosphere is still waiting to be observed. (C) 2020 Optical Society of America
    Note
    12 month embargo; published 29 May 2020
    ISSN
    1559-128X
    EISSN
    1539-4522
    PubMed ID
    32749273
    DOI
    10.1364/AO.387716
    Version
    Final accepted manuscript
    ae974a485f413a2113503eed53cd6c53
    10.1364/AO.387716
    Scopus Count
    Collections
    UA Faculty Publications

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