Počet záznamů: 1

Thermal stresses in small meteoroids

  1. 1.
    0354050 - ASU-R 2011 RIV FR eng J - Článek v odborném periodiku
    Čapek, David - Vokrouhlický, D.
    Thermal stresses in small meteoroids.
    Astronomy & Astrophysics. Roč. 519, Sept (2010), A75/1-A75/16 ISSN 0004-6361
    Grant CEP: GA ČR GP205/09/P455
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: meteorites * meteors * meteoroids
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
    Impakt faktor: 4.410, rok: 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).
    Trvalý link: http://hdl.handle.net/11104/0193136