Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012pasj...64....6l&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.64, No.1, Article No.6 (6 pages)
Astronomy and Astrophysics
Astronomy
Comets: Individual (55P/Tempel-Tuttle), Interplanetary Medium, Meteors, Solar System: General
Scientific paper
This paper presents an analysis of records obtained by video equipment of the 2001 Leonid meteor storm. Totally, 3712 meteors, including 22 non-Leonid ones, were recognized from the record of 247 min. The brightness of meteors was measured with the software ``LIMovie'', and a population index of r = 2.01 ± 0.05 (-8 ≤ mag ≤ -3) was thus derived. We proposed a way to derive the mass-distribution index, s = 1.82, from only our one-station data. The maximum of the activity appeared at 18h25m UT with an effective peak of ZHR90°×67° = 52606 (mag ≤ +6.5). There are also compatible sub-peaks and high plateaus beside the main peak. One of them may correspond to the predicted 9-revolution dust trail (ejection in 1699). In this article we treat the cross section of the influx zone as a trapezoid. The peak ``influx rate'' generated by the 4-revolution dust trail (ejection in 1866) thus derived would be 6.76 × 10-5km-2s-1 (mag ≤ +6.5), and the corresponding ``spatial number density'' would be 9.52 × 10-7km-3 (mag ≤ +6.5).
Abe Shinsuke
Koten Pavel
Lin Chilong
Yang I.-Ching
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