多波长螃蟹
(原标题: The Multiwavelength Crab)
2022-03-04
浏览次数: 15
蟹状星云被编目为M1，是查尔斯·梅西耶著名的非彗星列表中的第一个物体。事实上，蟹状星云现在被认为是超新星遗迹，是公元1054年在地球上目睹的大质量恒星死亡爆炸的残骸。这张勇敢的新照片展示了蟹状星云在21世纪的景象，它以可见光波长的形式呈现了电磁波谱的图像数据。从太空中，钱德拉（x射线）、xmm -牛顿（紫外线）、哈勃（可见光）和斯皮策（红外）的数据呈现紫色、蓝色、绿色和黄色色调。来自地面的甚大阵列射电波长数据显示为红色。蟹状脉冲星是现代天文学家所知的最奇特的天体之一，它是一颗每秒旋转30次的中子星，是图片中心附近的亮点。就像宇宙发电机一样，这个坍缩的恒星核心残骸为蟹状星云在电磁波谱上的发射提供了动力。蟹状星云距离金牛座6500光年，跨度约12光年。
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The Crab Nebula is cataloged as M1, the first object on Charles Messier's famous list of things which are not comets. In fact, the Crab is now known to be a supernova remnant, expanding debris from massive star's death explosion, witnessed on planet Earth in 1054 AD. This brave new image offers a 21st century view of the Crab Nebula by presenting image data from across the electromagnetic spectrum as wavelengths of visible light. From space, Chandra (X-ray) XMM-Newton (ultraviolet), Hubble (visible), and Spitzer (infrared), data are in purple, blue, green, and yellow hues. From the ground, Very Large Array radio wavelength data is shown in red. One of the most exotic objects known to modern astronomers, the Crab Pulsar, a neutron star spinning 30 times a second, is the bright spot near picture center. Like a cosmic dynamo, this collapsed remnant of the stellar core powers the Crab's emission across the electromagnetic spectrum. Spanning about 12 light-years, the Crab Nebula is 6,500 light-years away in the constellation Taurus.