2001 Leonids flux by radio observation using a beam antenna

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Results of 2001 Leonids meteor storm by Ham-band Radio Observation (HRO) using a beam antenna is presented. The Leonids in 2001 was 234+ attracted because of the predication of its meteor storm (Mc Naught and Asher 1999). To measure the mass index and the flux during the meteor storm, we made the beam antenna (7-element loop antenna), which beam-width is 20-30 degree toward the zenith. Using this system, we get the detail activity profile during the 2001 Leonids meteor storm over Japan. The main peak of storm was observed at 18h20m-30m UT on November 18, and some sub peaks were observed at 19h00m-10m UT, 21h20m-30m UT and 23h30m-30m UT on November 18. The long-duration echoes (fireball) activity was almost constant during the storm. The duration of storm is more than 8 hours (from 16h UT to 24h UT). This activity was dominated by the long-duration echoes resulting in a low mass distribution index ; s 〜1.7. The peak flux is more than 1×10^<-5>km^<-2>s^<-1>, which value is consistent with the video observation with a limiting magnitude of +3.
長野工業高等専門学校の論文
2003-06-30