Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jimo...29..187a&link_type=abstract
WGN, Journal of the International Meteor Organization, vol. 29, no. 6, p. 187-194
Physics
17
Scientific paper
Observers in America and Asia have monitored strong peaks of the Leonid activity on November 18, 2001. We present a first analysis of global data based on the reports of 177 observers who recorded 137146 Leonids. Main activity peaks are found for solar longitudes (all J2000.0) lambda=236.137+-0.003 deg (November 18, 10h39m+-4m) and lambda=236.458+-0.003 deg (November 18, 18h16m+-4m). Secondary peaks are found near the main Asian maximum at lambda=236.448+-0.003 (November 18, 18h02m+-4m) and lambda=236.467+-0.003 (November 18, 18h39m+-4m). The American peak actually exhibits a bimodal structure with two similar maxima at 236.137+-0.003 and 236.154+-0.003, the second of them being 24 minutes later. The population index shows sharp peaks for the storms, whereas the background level during the interval lambda=235.6-237.0 deg is characterized by r<1.9.
Arlt Rainer
Buchmann Amy
Kac Javor
Krumov Vladimir
Verbert Jan
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