Wide-Field TV Observation of the Leonid Meteor Storm in 2001: Main Peak over Japan

Publications of the Astronomical Society of Japan

Sekiguchi, Tomohiko²  Abe, Shinsuke⁴  Watanabe, Jun-ichi²  Shikura, Masato³  Naito, Seiichiro¹ 

[1] Department of Astronomy, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033;National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588;Department of Physics, Science University of Tokyo, Shinjuku-ku, Tokyo 162-8601;The Institute of Space and Aeronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510

关键词: "comets: individual (comet 55P/Tempel-Tuttle)";    "interplanetary medium";    meteors;    "solar system";   

DOI  :  10.1093/pasj/54.2.L23

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Wecarriedoutawide-fieldTVobservationofthestrongactivityoftheLeonidmeteorshowerfrom$${17{}^{mathrm{h}}17{}^{mathrm{m}}}$$UTthrough$${20{}^{mathrm{h}}20{}^{mathrm{m}}}$$UTon2001November18.Wedetected869Leonidmeteors,alongwith32non-Leonids.Abroadpeakoftheactivitywasrecognizedataround$${18{}^{mathrm{h}}25{}^{mathrm{m}}}$$UT,whenthepeakinfluxrateofmeteoroidswas$$1.4imes10^{-5},mathrm{km}^{-2},mathrm{s}^{-1}$$($$mathrm{mag}le+3$$).Theactivityofthismainpeakwascomparabletothatofastormobservedin1999overEurope.Theactivityofthispeakwasrichinbrightmeteors,includingfireballclass.Themagnitudedistributionindexwas$$1.5pm0.3$$($$-3lemathrm{mag}le+1$$).Therelationshipbetweentheobservedpeakandseveraltheoreticalpredictionsisdiscussed.Wealsodiscussan“outburst”,whichconsistedofatleast15faintmeteorswhichappearedwithinfoursecondsat$${17{}^{mathrm{h}}56{}^{mathrm{m}}22{}^{mathrm{s}}}$$.

【 授权许可】

Unknown