英语分级阅读 · Level 3 · science · 约 394 词
NASA Finds Rare Black Hole Eating a Star Far From Galaxy Center
NASA's Swift Observatory saw a rare event where a black hole far outside a galaxy's core tore apart a star, helping scientists find more wandering black holes.
NASA scientists have discovered a rare black hole that is eating a star far from the center of its galaxy. This unusual event was observed by the Neil Gehrels Swift Observatory, which has been watching the universe for more than twenty years. The discovery is important because black holes that wander away from galactic centers are very difficult to find. Usually, astronomers only see these events in the crowded cores of galaxies.
The event was first flagged in November 2025 by the Zwicky Transient Facility at Palomar Observatory. An artificial intelligence algorithm helped identify the sudden flare of light. Scientists then used the Swift Observatory to study the event in detail. They confirmed that a supermassive black hole, which weighs about one million times the mass of the Sun, was tearing apart a nearby star. This process is called a tidal disruption event.
The black hole is located more than 30,000 light-years away from the center of its host galaxy. The galaxy itself is about 750 million light-years from Earth. During the event, the black hole radiated with the light of about ten billion suns. Swift measured the temperature of the material at about 54,000 degrees Fahrenheit. This intense heat and brightness temporarily outshone the entire galaxy in ultraviolet wavelengths.
This discovery validates a new technique to hunt for invisible wandering black holes. Before 2024, tidal disruption events had only been observed in the cores of galaxies. Scientists believe this specific black hole originated in a different galaxy that merged with the current host galaxy. Understanding how common these wandering black holes are helps astronomers learn more about how galaxies grow and change over time.
The findings were published in The Astrophysical Journal Letters. Researchers from the University of Maryland, the University of North Carolina, and NASA Goddard contributed to the study. They noted that while Swift is currently waiting for an orbit boost, future searches will use data from the Vera C. Rubin Observatory and NASA's upcoming Nancy Grace Roman Space Telescope. These powerful tools will help find more events like this one, expanding our knowledge of the universe.
This breakthrough shows that even old missions can make new discoveries. By combining data from different telescopes, scientists can uncover secrets that were previously hidden. The next step is to use this validated technique to search for more wandering black holes across the cosmos.
中文参考
美国宇航局的科学家发现了一个罕见的黑洞，它正在远离其星系中心的地方吞噬一颗恒星。这一不寻常的事件由尼尔·格雷尔斯·斯威夫特天文台观测到，该天文台已经观测宇宙二十多年了。这一发现很重要，因为远离星系中心的流浪黑洞非常难以找到。通常，天文学家只在星系拥挤的核心区域看到这些事件。
该事件最初于2025年11月由帕洛马天文台的兹威基瞬变设施标记。一个人工智能算法帮助识别了突然爆发的光芒。随后，科学家们使用斯威夫特天文台对这一事件进行了详细研究。他们确认一个质量约为太阳一百倍的超大质量黑洞正在撕裂附近的一颗恒星。这一过程被称为潮汐瓦解事件。
这个黑洞距离其宿主星系的中心超过30,000光年。该星系本身距离地球约7.5亿光年。在事件发生期间，黑洞辐射出的光芒相当于约一百亿个太阳。斯威夫特测量到物质的温度约为54,000华氏度。这种强烈的热量和亮度在紫外线波段暂时超过了整个星系的光芒。
这一发现验证了一种寻找隐形流浪黑洞的新方法。在2024年之前，潮汐瓦解事件只在星系核心被观测到。科学家们认为，这个特定的黑洞起源于另一个与当前宿主星系合并的星系。了解这些流浪黑洞有多普遍，有助于天文学家更多地了解星系如何随时间生长和变化。
研究结果发表在《天体物理学杂志增刊》上。来自马里兰大学、北卡罗来纳大学和NASA戈达德的研究人员参与了这项研究。他们指出，虽然斯威夫特目前正等待轨道提升，但未来的搜索将使用薇拉·鲁宾天文台和NASA即将发射的南希·格雷斯·罗曼太空望远镜的数据。这些强大的工具将帮助发现更多类似的事件，扩展我们对宇宙的认知。
这一突破表明，即使是老任务也能做出新发现。通过结合来自不同望远镜的数据，科学家们可以揭开以前隐藏的秘密。下一步是使用这种经过验证的技术来搜索宇宙中更多的流浪黑洞。