英仙座在韦斯特米斯瞭望台爆发
(原标题: Perseid Outburst at Westmeath Lookout)
2021-09-24
浏览次数: 35
今年英仙座流星雨的爆发让天文观测者感到惊讶。据预测，这一可靠的流星雨将在8月12日至13日晚上达到峰值。然而，一天后，北美洲的观测者们却被一场惊人的英仙座流星雨所淹没，据报道，在8月14日凌晨，每分钟甚至每秒都有多颗流星。在这张合成图像中，流星雨的辐射点在黑暗的夜空中很高。它煞费苦心地记录了282颗英仙座流星雨的轨迹，这些流星雨是在8月14日0650 UT（美国东部时间02:50am）到0900 UT（美国东部时间05:00am）之间从安大略省的Westmeath Lookout拍摄的。当然，一年一度的英仙座流星雨与地球穿过109P/斯威夫特-塔特尔彗星的尘埃碎片有关。2021年的爆发可能是由于与英仙座细丝的意外相遇造成的，英仙座细丝是在更广阔的碎片带内更密集的尘埃带。
查看原文解释
This year an outburst of Perseid meteors surprised skywatchers. The reliable meteor shower's peak was predicted for the night of August 12/13. But persistent visual observers in North America were deluged with a startling Perseid shower outburst a day later, with reports of multiple meteors per minute and sometimes per second in the early hours of August 14. The shower radiant is high in a dark night sky in this composite image. It painstakingly registers the trails of 282 Perseids captured during the stunning outburst activity between 0650 UT (02:50am EDT) and 0900 UT (05:00am EDT) on August 14 from Westmeath Lookout, Ontario. Of course the annual Perseid meteor shower is associated with planet Earth's passage through dusty debris from periodic comet 109P/Swift-Tuttle. The 2021 outburst could have been caused by an unanticipated encounter with the Perseid Filament, a denser ribbon of dust inside the broader debris zone.
© Pierre Martin