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Determination of atmospheric velocity of bright meteors on the basis of high-resolution light curves

机译:基于高分辨率光曲线确定亮流星的大气速度

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We introduce a new method for the determination of the atmospheric velocity of bright meteors (fireballs). The method uses high-time-resolution light curves of fireballs and photographic or digital records of the fireballs where dynamics data are not available, i.e. a rotating shutter was not used. Simultaneous identification of flares or other unambiguous events is needed on both the light curve and the photographic or digital record. These events, flares for instance, serve as time-marks and substitute the artificial rotating shutter time-marks. We studied the method on nine selected fireballs that fulfill the above conditions, occupy a wide interval of possible initial velocities (from 14.5 to 50?km?s-1), and are of a different orbital origin (cometary and asteroidal). The method provides correct velocities with scatter of a few km?s-1 around the average value that corresponds to the rotating shutter velocity.
机译:我们介绍了一种确定亮流星(火球)大气速度的新方法。该方法使用无法获得动态数据(即未使用旋转快门)的火球的高时间分辨率光曲线和火球的摄影或数字记录。在光曲线和照相或数字记录上都需要同时识别耀斑或其他明确的事件。这些事件(例如耀斑)充当时间标记,并替代了人工旋转快门时间标记。我们在满足上述条件的9个选定火球上研究了该方法,这些火球占据了可能的初始速度(从14.5至50?km?s-1)很宽的间隔,并且具有不同的轨道起源(彗星和小行星)。该方法提供正确的速度,该速度在与旋转快门速度相对应的平均值周围有几km?s-1的散射。

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