The Lyrid meteor stream: Activity and mass distribution

Porubčan, V. and Zigo, P. and Pupillo, G. and Cevolani, G. and Bortolotti, G. and Franceschi, C. and Trivellone, G. (2006) The Lyrid meteor stream: Activity and mass distribution. Il nuovo cimento C, 29 (5). pp. 601-606. ISSN 1826-9885

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Observations of the Lyrid meteor shower in 1997-2005 by a forwardscatter radio system for meteor observation operating simultaneously along two baselines, Bologna-Lecce (Italy) and Bologna-Modra (Slovakia), are analysed and discussed. The activity curves of long-duration echoes (≥ 8 s) and their variations indicate a complex structure of the stream. The Earth crosses the stream at a half maximum rate level in about two days. The overall activity peak derived from all observed returns is at solar longitude 32.30o (eq. 2000.0). The mass distribution exponent s and its variations in the period of the shower maximum indicate a relatively stable population of meteoroids in the stream exhibiting filamentary structure.

Item Type: Article
Uncontrolled Keywords: Meteors, meteorites and textites ; Radio, microwave (> 1 mm)
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse
Depositing User: Marina Spanti
Date Deposited: 19 Mar 2020 14:48
Last Modified: 19 Mar 2020 14:48

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