從 SDO 觀測到的太陽突出噴發
A Solar Prominence Eruption from SDO
發表日期:2024-08-18
最壯觀的太陽景象之一是噴發的突出物。 2011 年,美國國家航空航天局(NASA)的太陽軌道太陽動力學觀測站(Solar Dynamic Observatory)太空飛行器拍攝到了一個從太陽表面噴發出來的巨大突出物。在這段長達 90 分鐘的延時影片中,每 24 秒拍攝一幀新畫面,用紫外線捕捉到了這一戲劇性的爆發。 該日珥的規模非常巨大--整個地球都可以輕鬆地容納在流動的熱氣帷幕之下。 太陽突出是由太陽磁場引導的,有時還被太陽磁場保持在太陽表面上方。靜止的日珥通常會持續一個月左右,並可能爆發日冕物質拋射(CME),將熱氣排入太陽系。 產生太陽突出的能量機制是一個持續的研究課題。 我們的太陽再次接近太陽極大值,因此非常活躍,有許多爆發的日珥和日冕物質拋射,其中一個在過去的一週裡產生了美麗如畫的極光。
原文:One of the most spectacular solar sights is an erupting prominence. In 2011, NASA's Sun-orbiting Solar Dynamic Observatory spacecraft imaged an impressively large prominence erupting from the surface. The dramatic explosion was captured in ultraviolet light in the featured time lapse video covering 90 minutes, where a new frame was taken every 24 seconds. The scale of the prominence is huge -- the entire Earth would easily fit under the flowing curtain of hot gas. A solar prominence is channeled and sometimes held above the Sun's surface by the Sun's magnetic field. A quiescent prominence typically lasts about a month and may erupt in a Coronal Mass Ejection (CME) expelling hot gas into the Solar System. The energy mechanism that creates a solar prominence is a continuing topic of research. Our Sun is again near solar maximum and so very active, featuring numerous erupting prominences and CMEs, one of which resulted in picturesque auroras just over the past week.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。