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Helium shells and faint emission lines from slitless flash spectra

Cyril Bazin1, Serge Koutchmy2

  • 1Institut d'Astrophysique de Paris, UMR 7095, CNRS & UPMC, 98 bis Bd. Arago, 75014 Paris, France ; Laboratoire d'Astrophysique de Marseille, CNRS UMR 6110, 38, rue Frédéric Joliot-Curie, 13388 Marseille, France.

Journal of Advanced Research
|February 17, 2015
PubMed
Summary

High frame rate spectra during solar eclipses revealed two helium shells, extending approximately 3 Mm. These observations allow detailed analysis of solar atmosphere layers, crucial for understanding ionization rates.

Keywords:
ChromosphereFlash spectraHelium shellLow FIP emission linesSolar transition regionTotal solar eclipse

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