Computer Science
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jimo...24..141r&link_type=abstract
WGN, Journal of the International Meteor Organization, vol. 24, no. 5, p. 141-147
Computer Science
5
Scientific paper
This analysis is based on a sample of more than 14000 Perseids of 1995 and 7500 Perseids of 1996. Peak activity reoccurred in 1995 at lambda=139.63+-0.02 degrees (2000.0) and in 1996 at lambda=139.66+-0.03 degrees. Due to the coincidence of Full Moon and the Perseid maximum in 1995, the sample is small and of limited quality compared with the 1996 data. Therefore, we were not able to obtain a well-resolved profile of the population index r in 1995, while the 1996 r-profile indicates a higher value of r=2.03+-0.02 during the peak period than in the surrounding time intervals where we found values of r approx. 1.8. Based on a number of 10-minute counts, the maximal EZHR of the 1996 peak reached a level of 120 with a kind of plateau of ZHRs above 100 lasting from lambda=139.64-139.67 degrees (i.e., August 12, 0h40m-1h25m UT). The position of the 'outburst peak' is found to have shifted backwards in solar longitude from lambda=139.78 degrees in 1988 to 139.48 degrees in 1992, and then forward to lambda=139.67 degrees in 1996. During this period, the peak was closest to the ascending node of 109P/Swift-Tuttle in 1992.
Arlt Rainer
Rendtel Jurgen
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