一个新黑洞

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图片来源:NASA/SAO/CXC

科学家昨天报告称,有证据表明天空中存在一种以前未知的黑洞。来自美国宇航局钱德拉X射线天文台的数据显示,在星暴星系M82中心约600光年处有一个黑洞(图)。X射线源的亮度表明,这个月球大小的黑洞质量至少是太阳的500倍,介于恒星黑洞和星系中心发现的超大质量黑洞之间。“这开辟了一个全新的研究领域,”关于该主题即将发表的三篇论文的主要作者之一马丁·沃德说。“没有人确信这种黑洞会存在,尤其是在星系中心之外。”

早期来自伦琴卫星以及宇宙学和天体物理学高级卫星的数据表明,M82可能在其核心之外包含一个大型黑洞,但钱德拉的结果证实了这一点。这个新天体可能是由“超巨星”的坍缩或较小黑洞通过与附近其他黑洞合并而增长形成的。

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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