Arid
DOI10.3847/1538-4357/ab4516
Determining Fireball Fates Using the ???;Criterion
Sansom, Eleanor K.1; Gritsevich, Maria2,3,4; Devillepoix, Hadrien A. R.1; Jansen-Sturgeon, Trent1; Shober, Patrick1; Bland, Phil A.1; Towner, Martin C.1; Cupak, Martin1; Howie, Robert M.1; Hartig, Benjamin A. D.1
通讯作者Sansom, Eleanor K.
来源期刊ASTROPHYSICAL JOURNAL
ISSN0004-637X
EISSN1538-4357
出版年2019
卷号885期号:2
英文摘要As fireball networks grow, the number of events observed becomes unfeasible to manage by manual efforts. Reducing and analyzing big data requires automated data pipelines. Triangulation of a fireball trajectory can swiftly provide information on positions and, with timing information, velocities. However, extending this pipeline to determine the terminal mass estimate of a meteoroid is a complex next step. Established methods typically require assumptions to be made of the physical meteoroid characteristics (such as shape and bulk density). To determine which meteoroids may have survived entry there are empirical criteria that use a fireball?s final height and velocity?low and slow final parameters are likely the best candidates. We review the more elegant approach of the dimensionless coefficient method. Two parameters, ? (ballistic coefficient) and ? (mass loss), can be calculated for any event with some degree of deceleration, given only velocity and height information. ? and ? can be used to analytically describe a trajectory with the advantage that they are not mere fitting coefficients; they also represent the physical meteoroid properties. This approach can be applied to any fireball network as an initial identification of key events and determine on which to concentrate resources for more in-depth analyses. We used a set of 278 events observed by the Desert Fireball Network to show how visualization in an ??? diagram can quickly identify which fireballs are likely meteorite candidates.
英文关键词Fireballs Meteors Bolides Meteoroids
类型Article
语种英语
国家Australia ; Finland ; Russia
开放获取类型Bronze, Green Published, Green Submitted
收录类别SCI-E
WOS记录号WOS:000499886700001
WOS关键词LOST CITY ; NETWORK ; METEORITES ; MASS ; VELOCITIES ; ATMOSPHERE ; INNISFREE ; EQUATIONS ; BOLIDES ; HEIGHT
WOS类目Astronomy & Astrophysics
WOS研究方向Astronomy & Astrophysics
EI主题词2019-11-10
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/310802
作者单位1.Curtin Univ, Space Sci & Technol Ctr, GPO Box U1987, Perth, WA 6845, Australia;
2.Univ Helsinki, Dept Phys, Helsinki, Finland;
3.Finnish Geospatial Res Inst FGI, Masala, Finland;
4.Ural Fed Univ, Inst Phys & Technol, Ekaterinburg, Russia
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GB/T 7714
Sansom, Eleanor K.,Gritsevich, Maria,Devillepoix, Hadrien A. R.,et al. Determining Fireball Fates Using the ???;Criterion[J],2019,885(2).
APA Sansom, Eleanor K..,Gritsevich, Maria.,Devillepoix, Hadrien A. R..,Jansen-Sturgeon, Trent.,Shober, Patrick.,...&Hartig, Benjamin A. D..(2019).Determining Fireball Fates Using the ???;Criterion.ASTROPHYSICAL JOURNAL,885(2).
MLA Sansom, Eleanor K.,et al."Determining Fireball Fates Using the ???;Criterion".ASTROPHYSICAL JOURNAL 885.2(2019).
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