Ablation of small iron meteoroids-First results
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00478678" target="_blank" >RIV/67985815:_____/17:00478678 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.pss.2017.03.004" target="_blank" >http://dx.doi.org/10.1016/j.pss.2017.03.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.pss.2017.03.004" target="_blank" >10.1016/j.pss.2017.03.004</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Ablation of small iron meteoroids-First results
Popis výsledku v původním jazyce
A population of faint meteors with low velocities, and low beginning heights have been described by Boroviaa et al. (2005) and Campbell-Brown (2015). They have only iron lines in their spectra. Most of them have unusual light curves that can not be explained by classical single body ablation theory or by fragmentation models. We developed a model which considers iron meteoroids and three different processes of the ablation. The comparison of theoretical and observed meteor heights and light curves leads to the conclusions that (i) vaporization of the liquid from the surface of the meteoroid is too slow a process and it is not able to explain the majority of the observed meteors. (ii) Breakup of the liquid drop would not occur at all or occur at heights which are too low. (iii) The immediate removal of the liquid from the meteoroids surface and fast release of its kinetic energy is the most probable process leading to the observed meteors. This scenario predicts similar heights, lenghts, and light curves as observed meteors.
Název v anglickém jazyce
Ablation of small iron meteoroids-First results
Popis výsledku anglicky
A population of faint meteors with low velocities, and low beginning heights have been described by Boroviaa et al. (2005) and Campbell-Brown (2015). They have only iron lines in their spectra. Most of them have unusual light curves that can not be explained by classical single body ablation theory or by fragmentation models. We developed a model which considers iron meteoroids and three different processes of the ablation. The comparison of theoretical and observed meteor heights and light curves leads to the conclusions that (i) vaporization of the liquid from the surface of the meteoroid is too slow a process and it is not able to explain the majority of the observed meteors. (ii) Breakup of the liquid drop would not occur at all or occur at heights which are too low. (iii) The immediate removal of the liquid from the meteoroids surface and fast release of its kinetic energy is the most probable process leading to the observed meteors. This scenario predicts similar heights, lenghts, and light curves as observed meteors.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA16-00761S" target="_blank" >GA16-00761S: Rozpady meteoroidů a malých asteroidů v zemské atmosféře</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Planetary and Space Science
ISSN
0032-0633
e-ISSN
—
Svazek periodika
143
Číslo periodika v rámci svazku
SI
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
5
Strana od-do
159-163
Kód UT WoS článku
000405050600024
EID výsledku v databázi Scopus
2-s2.0-85014774116