一個新黑洞

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圖片來源:NASA/SAO/CXC

科學家昨天報告稱,有證據表明天空中存在一種以前未知的黑洞。來自美國宇航局錢德拉X射線天文臺的資料顯示,在星暴星系M82中心約600光年處有一個黑洞(圖)。X射線源的亮度表明,這個月球大小的黑洞質量至少是太陽的500倍,介於恆星黑洞和星系中心發現的超大質量黑洞之間。“這開闢了一個全新的研究領域,”關於該主題即將發表的三篇論文的主要作者之一馬丁·沃德說。“沒有人確信這種黑洞會存在,尤其是在星系中心之外。”

早期來自倫琴衛星以及宇宙學和天體物理學高階衛星的資料表明,M82可能在其核心之外包含一個大型黑洞,但錢德拉的結果證實了這一點。這個新天體可能是由“超巨星”的坍縮或較小黑洞透過與附近其他黑洞合併而增長形成的。

Kate Wong is an award-winning science writer and senior editor at 大眾科學 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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