Physics
Scientific paper
Jun 1929
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1929phrv...33.1046m&link_type=abstract
Physical Review, vol. 33, Issue 6, pp. 1046-1060
Physics
3
Scientific paper
A recent theory of the authors attributed terrestrial magnetic storms and auroral displays to the effect of unusual flares of ultra-violet light from the sun falling upon the terrestrial atmosphere. Such flares would be expected to cause changes in comets, and therefore comet changes should be closely connected with magnetic storms. This connection is supported by the evidence brought out in the present paper in a discussion of the behavior of 31 comets scattered through the years 1848 to 1927. A general statistical result was that in the month preceding each comet's activity there occurred on the average 6, 4, 2.9 and 1.5 times as many magnetic storms of strength 4, 3, 2 and 1, respectively, as there should have occured according to chance. Outstanding comet changes, 28 in number, were observed on the average 5 days after strong magnetic storms. The positions of the comet, sun and earth at the epochs of the comet changes indicated that the solar flare was in a wide angle, contrary to the narrow beam hypothesis of Maunder.
Hulburt E. O.
Maris H. B.
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