Permanent changes in filaments near solar flares |
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| Authors: | David M Rust |
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| Institution: | (1) American Science and Engineering, Inc., 02139 Fort Washington, MA, U.S.A.;(2) Present address: The Johns Hopkins University Applied Physics Lab., Johns Hopkins Road, 20707 Laurel, MD, U.S.A. |
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| Abstract: | High resolution H images obtained before and after 57 importance 1N or larger flares have been examined for changes in the magnetic fields (B
 ) transverse to the line of sight. It was assumed that H chromospheric structures outline B
. In 37% of the cases, there was a reconfiguration of segments of filaments or of chromospheric fibrils. Examination of data from 21 non-flare intervals shows such changes in 24% of cases. When changes of any kind, including total disappearance and length changes, are included, the proportions for flare and non-flare intervals increase to 58% and 52%, respectively. It is concluded that flares do not cause enduring magnetic field changes in the chromosphere. |
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