Energetic electrons and positrons (antielectrons) move out from an inner X-ray ring, which marks a shockwave between different forms of matter, to produce an extended X-ray glow.
IceCube's task is to watch for energetic neutrinos emanating from violent cosmic events such as supernovae and gamma-ray bursts.
冰立方的任务是找到那些从一些剧烈的宇宙事件，如超新星和伽马射线爆发中发射不来的高能中微子。
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New results from a premier sky survey by NASA's Swift satellite at hard (energetic) X-ray energies now solidly show a strong association of AGN with merging galaxies, though.