Activity in the quiet sun. I - Observations of macrospicules in H-alpha and D3

Details Activity in the quiet sun. I - Observations of macrospicules in H-alpha and D3 Activity in the quiet sun. I - Observations of macrospicules in H-alpha and D3

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...61..283l&link_type=abstract

Solar Physics, vol. 61, Mar. 1979, p. 283-296.

Physics

24

D Lines, H Alpha Line, Solar Physics, Spicules, Emission Spectra, Far Ultraviolet Radiation, Helium, Solar Limb

Scientific paper

Macrospicules have been observed in Hα and He I D3, on the disk and above the limb. In 1975, a rate of 1400 (Asun day)-1 is inferred, and the ratio of equatorial to polar rates ≲2. D3 intensities are a few × 10-3 of the disk center, and do not decrease in coronal holes. The ratio of Hα to D3 intensities is ≍ 10. The integral number of macrospicules with D3 intensity ≥ I0 is proportional to I-10.

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