2014年Ursid流星爆发的多仪器观测
Multi-instrumental observations of the 2014 Ursid meteor outburst
摘要：
熊座流星雨是一个每年一度的流星雨，通常没有什么活动。然而，它的天顶时率有时会增加，通常是当它的母彗星8 P/Tuttle接近它的近日点或远日点时。当彗星远离近日点时爆发并不常见，而当彗星接近远日点时爆发则极为罕见。迄今为止，最可能的解释是基于轨道平均运动共振。对2000年12月远日点爆发的研究提供了检验这一假设的手段。据预测，2014年12月将发生一次新的远日点爆发。西班牙流星网络与法国火球回收和行星际观测网络合作开展了一项活动，以监测这次爆发，并最终检索轨道数据，扩大和证实以前的初步结果和预测。尽管在有关时期南欧的天气条件不利，但从西班牙上空记录的多站流星数据中获得了精确的轨迹，以及四颗Ursid流星的轨道和辐射信息。这四颗流星的成员资格，预期的尘埃轨迹，是挑起爆发进行了讨论，我们的特点爆发的尘埃轨迹中产生的彗星在公元1392年的起源。
英文摘要：
The Ursid meteor shower is an annual shower that usually shows little activity. However, its Zenith Hourly Rate sometimes increases, usually either when its parent comet, 8P/Tuttle, is close to its perihelion or its aphelion. Outbursts when the comet is away from perihelion are not common and outburst when the comet is close to aphelion are extremely rare. The most likely explanation offered to date is based on the orbital mean motion resonances. The study of the aphelion outburst of December 2000 provided a means of testing that hypothesis. A new aphelion outburst was predicted for December 2014. The Spanish Meteor Network in collaboration with the French Fireball Recovery and InterPlanetary Observation Network set up a campaign to monitor this outburst and eventually retrieve orbital data that expands and confirms previous preliminary results and predictions. Despite unfavourable weather conditions over the South of Europe over the relevant time period precise trajectories from multi-station meteor data recorded over Spain were obtained, as well as orbital and radiant information for four Ursid meteors. The membership of these four meteors to the expected dust trails that were to provoke the outburst is discussed, and we characterize the origin of the outburst in the dust trail produced by the comet in the year 1392 A.D.
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