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A micrometeor component of the 1998 Leonid shower
Ma, YH; He, YW; Williams, IP
2001-08-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume325Issue:2Pages:457-462
AbstractMost astronomers expected a significant meteor shower associated with the Leonid meteoroid stream to appear in 1998 and 1999. An enhanced shower was widely observed in both years, and details can be found in many published articles. In 1998, one remarkable feature was the appearance of a strong component, rich in bright meteors, which appeared about 16 h before the expected maximum of the main shower, but another observed feature was an abnormal peak in the ionosphere characteristic value f(b)E(s) which was detected about 18 h after the main shower. A very high value of f(b)E(s) persisted for over an hour. The likely explanation is that the ionosphere was bombarded by an additional swarm of meteoroids, much smaller than those that produce a visible trail or an ionization trail that can be picked up by radio detectors. The different dynamical behaviours between small and large meteoroids are investigated and, in consequence, an explanation for the observed phenomena is offered and 1933 is suggested as being the likely ejection time.
KeywordCelestial Mechanics Comets : Individual : 55p/tempel-tuttle Meteors, Meteoroids
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordCOMET TEMPEL-TUTTLE ; METEOROID STREAM ; STORMS ; OUTBURST
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000170568100004
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8190
Collection近地天体探测和太阳系天体研究团组
Affiliation1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Acad Sinica, Natl Astron Observ, Beijing, Peoples R China
3.Univ London Queen Mary & Westfield Coll, Astron Unit, London E1 4NS, England
4.Elect Wave Propagat Inst China, Xinxiang 453003, Peoples R China
Recommended Citation
GB/T 7714
Ma, YH,He, YW,Williams, IP. A micrometeor component of the 1998 Leonid shower[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2001,325(2):457-462.
APA Ma, YH,He, YW,&Williams, IP.(2001).A micrometeor component of the 1998 Leonid shower.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,325(2),457-462.
MLA Ma, YH,et al."A micrometeor component of the 1998 Leonid shower".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 325.2(2001):457-462.
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