Thermal stresses in small meteoroids

0354050 - ASÚ 2011 RIV FR eng J - Journal Article
Čapek, David - Vokrouhlický, D.
Thermal stresses in small meteoroids.
Astronomy & Astrophysics. Roč. 519, Sept (2010), A75/1-A75/16. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GP205/09/P455
Institutional research plan: CEZ:AV0Z10030501
Keywords : meteorites * meteors * meteoroids
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.410, year: 2010

Our results indicate that the onset of thermal failure in the meteoroid depends on a number of parameters including the heliocentric distance, the size, the rotation frequency, and the orientation of the spin axis with respect to the solar direction. In our case, we find large, centimeter- to meter-size, slowly rotating meteoroids or those with a spin axis pointing towards the Sun or both, are the most susceptible to the thermal bursting. This may have implications for the (i) size distribution of meteoroids in various streams depending on their heliocentric orbit and the physical characteristics of their parent bodies; (ii) orbital distribution of sporadic complexes of meteoroids in the planet-crossing zone; and/or (iii) fate of fragments released during comet disintegration events, especially those with low perihelia (e.g., Kreutz class).
Permanent Link: http://hdl.handle.net/11104/0193136