Pupillo, G. and Cevolani, G. (2003) Radar observations of the Leonid meteoroid stream in 2001. Il nuovo cimento C, 26 (2). pp. 151-158. ISSN 1826-9885
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Abstract
Results of the Leonid meteoroid stream observed in 2001 are presented. Data have been collected during November 13-23, 2001 by using a forward-scatter radar operating along the two long baselines of Bologna-Lecce (700 km) and Bologna-Modra (600 km). The profile of the reflection time shows a broad component on November 18 in the 00–12h UT time interval with maxima between 09:00h and 11:00h UT. About 90% of the reflection time was recorded at the two receiving stations of Lecce and Modra during the peak hour with an associated mass index of s = 1.72. The flux reached a value of 4.5 × 10−11 m−2 s−1 at the solar longitude 236◦ .09±0◦ .02 (November 18, 9h 30m UT) for echoes with duration T ≥ 1 s corresponding to a limiting mass of m � 10 −5 kg. For longer-duration (T ≥ 8 s) echoes, the main activity peak was found a hour later at the solar longitude 236◦ .13±0◦ .02 (November 18, 10h30m UT), similarly as reported by visual observations. The perspective of high levels of Leonid activity in 2002 is discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Meteors, meteoroids, and meteor streams ; Radio, microwave (> 1 mm) |
| Subjects: | 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse |
| Depositing User: | Marina Spanti |
| Date Deposited: | 13 Mar 2020 09:58 |
| Last Modified: | 13 Mar 2020 09:58 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15111 |
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