Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987acaps...7..220l&link_type=abstract
(Acta Astrophysica Sinica, vol. 7, 1987, p. 220-229) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 11, Dec. 1987, p.
Astronomy and Astrophysics
Astrophysics
Bolides, Meteorites, Power Spectra, Spectrum Analysis, Statistical Analysis, Asteroid Belts, China, Histories, Perturbation Theory
Scientific paper
A power spectrum analysis is applied to the yearly statistics of Chinese historical records of fireballs. The results show that sound is an important indicator of origin. Noisy fireballs have the following possible periods in years: 170.6 + or - 0.0, 102.4 + or - 0.0, 66.1 + or - 2.2, 27.3 + or - 0.4, 23.3 + or - 0.0, 17.9 + or - 0.4, 14.8 + or - 0.1, 12.4 + or - 0.1, 10.5 + or - 0.3. Noisy fireballs and meteorite falls have basically the same periods, and both originate in the asteroid belt. It is thought that the factors affecting both are the Yarkovsky effect and the perturbations by Jupiter. The 10.5-yr, 23.3-yr, and 66.1-yr periods are related to the Yarkovsky effect and the 12.4-yr, 17.9-yr, 102.4-yr, and 170.6-yr periods to Jovian perturbations. The 14.8-yr and 27.3-yr periods may be due to the combined effect of the two or to some other causes.
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