Accession Number:

ADA422999

Title:

Evaporation of High Speed Sporadic Meteors

Descriptive Note:

Journal article

Corporate Author:

RADEX INC BEDFORD MA

Personal Author(s):

Report Date:

2004-01-01

Pagination or Media Count:

5.0

Abstract:

Recent measurements conducted at the Arecibo Observatory report high-speed sporadic meteors having velocities near 50 kms. The results seem to indicate a bimodal velocity distribution in the sporadic meteors maxima at approximately 20 kms and approximately 50 kms. 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 kms. 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.

Subject Categories:

  • Astronomy
  • Astrophysics
  • Physical Chemistry
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE