A distinctive type of ascending prominence - 'Fountain'

Details A distinctive type of ascending prominence - 'Fountain' A distinctive type of ascending prominence - 'Fountain'

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...44..417t&link_type=abstract

Solar Physics, vol. 44, Oct. 1975, p. 417-427.

Physics

7

Plasma Dynamics, Solar Physics, Solar Prominences, Chromosphere, Cinematography, Solar Corona, Solar Magnetic Field, Solar Radio Emission, Time Response

Scientific paper

Cinematographic observations of solar prominences made at Mauna Loa, Hawaii, during the past few years suggest that there is a well-defined subclass of ascending prominences characterized by closed-system transference of chromospheric material along an arch or loop (up one leg and down the other). While this occurs, the entire prominence envelope steadily rises upward and expands through the corona. These prominences are denoted as 'fountains'. Several examples are described. Fountains appear to be well contained by coronal magnetic fields. Their total kinetic energy is of the order of 10 to the 30th power erg, but dissipation is typically quite slow (over time periods of 100 min or so), so that the correlative disturbances (radio bursts, coronal transients, chromospheric brightenings) are generally not spectacular or nonexistent.

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