Evaporation of High Speed Sporadic Meteors
Abstract
Recent measurements conducted at the Arecibo Observatory report high-speed sporadic meteors having velocities near 50 km/s. The results seem to indicate a bimodal velocity distribution in the sporadic meteors (maxima at approximately 20 km/s and approximately 50 km/s). The particles have a maximum mass of approximately 1 microgram. This paper will present an analysis of the ablation of 1 microgram meteoroids having velocities of 20, 30, 50 and 70 km/s. The calculations show that there is fractionation even for the fast meteoroids, the effect being particularly noticeable for the 1 microgram sporadic particles, and less so for the heavier particles. The relevance of the calculations to the radar observations of the sporadic meteors will be discussed. (5 figures, 24 refs.)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2004
- Accession Number
- ADA422999
Entities
People
- C. Roth
- Edmond Murad