蟹狀星雲的旋轉脈衝星
The Spinning Pulsar of the Crab Nebula
發表日期：2025-08-24
在蟹狀星雲的核心，有一顆城市大小的磁化中子星，每秒旋轉 30 次。它被稱為蟹狀脈衝星，是星雲核心氣體漩渦中心的亮點。這幅壯觀的照片大約有 12 光年寬，定格了蟹狀星雲中心附近的發光氣體、空洞和漩渦細絲。 照片中紫色部分是哈勃太空望遠鏡發出的可見光，藍色部分是錢德拉 X 射線天文臺發出的 X 射線光，紅色部分是斯皮策太空望遠鏡發出的紅外線光。 蟹狀脈衝星就像一個宇宙發電機，為星雲的發射提供動力，推動衝擊波穿過周圍的物質，加速電子的螺旋運動。旋轉脈衝星的質量比太陽還大，密度相當於一個原子核，它是一顆發生爆炸的大質量恆星的塌縮核心。蟹狀星雲的外部是恆星氣體成分不斷膨脹的殘餘物。地球在 1054 年目睹了超新星的爆炸。 天空驚奇你的生日那天，APOD 刊登了哪張照片？ （ 1995 年之後）
原文：At the core of the Crab Nebula lies a city-sized, magnetized neutron star spinning 30 times a second. Known as the Crab Pulsar, it is the bright spot in the center of the gaseous swirl at the nebula's core. About twelve light-years across, the spectacular picture frames the glowing gas, cavities and swirling filaments near the Crab Nebula's center. The featured picture combines visible light from the Hubble Space Telescope in purple, X-ray light from the Chandra X-ray Observatory in blue, and infrared light from the Spitzer Space Telescope in red. Like a cosmic dynamo, the Crab pulsar powers the emission from the nebula, driving a shock wave through surrounding material and accelerating the spiraling electrons. With more mass than the Sun and the density of an atomic nucleus,the spinning pulsar is the collapsed core of a massive star that exploded. The outer parts of the Crab Nebula are the expanding remnants of the star's component gases. The supernova explosion was witnessed on planet Earth in the year 1054. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)
※ 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。