The lifetime and evolution of fibrils

Details The lifetime and evolution of fibrils The lifetime and evolution of fibrils

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7623137m&link_type=abstract

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Mathematics

Atmospheric Turbulence, Solar Radio Bursts, Alpha Particles, Evolution (Development), Fibers, Filtergrams, High Resolution, Hydrogen, Life (Durability), Solar Magnetic Field, Wavelengths

Scientific paper

A detailed study was made of the lifetimes and evolution of fibrils in McMath 12417, using high resolution filtergrams in H alpha and CaII K made at Big Bear Solar Observatory. It was found that the lifetime of a fibril increases monotonically with its length. This relationship, together with the form of the variation of fibril lengths as a function of time, suggests that fibrils result from material being impulsively injected into magnetic field lines at approximately 30 km/sec, and returning under gravity. The lifetimes and apparent lengths of fibrils are then a function of the inclination of the field lines only. A study of wavelength scans through the H alpha line confirms that the apparent expansion and contraction of fibrils represents true mass motion.

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