翻译300页文章应该怎么快速复制

翻译300页文章应该怎么快速复制
2009-08-12  徐大帅520 发布
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    lianandn

    How do you weigh the biggest black holes in the universe? One answer now comes from a completely new and independent technique that astronomers have developed using data from NASA's Chandra X-ray Observatory.

    By measuring a peak in the temperature of hot gas in the center of the giant elliptical galaxy NGC 4649, scientists have determined the mass of the galaxy's supermassive black hole. The method, applied for the first time, gives results that are consistent with a traditional technique.

    Astronomers have been seeking out different, independent ways of precisely weighing the largest supermassive black holes, that is, those that are billions of times more massive than the Sun. Until now, methods based on observations of the motions of stars or of gas in a disk near such large black holes had been used.

    "This is tremendously important work since black holes can be elusive, and there are only a couple of ways to weigh them accurately," said Philip Humphrey of the University of California at Irvine, who led the study. "It's reassuring that two very different ways to measure the mass of a big black hole give such similar answers."

    NGC 4649 is now one of only a handful of galaxies for which the mass of a supermassive black hole has been measured with two different methods. In addition, this new X-ray technique confirms that the supermassive black hole in NGC 4649 is one of the largest in the local universe with a mass about 3.4 billion times that of the Sun, about a thousand times bigger than the black hole at the center of our galaxy.

    你如何秤重宇宙中最大的黑色洞? 一个答案现在来自天文学家已经使用来自美国航空暨太空总署的 Chandra X光天文台的数据发展的完全新又独立的技术。

    藉由在庞大椭圆的银河 NGC 4649 的中心的热瓦斯的温度中测量一个山顶,科学家已经决定银河的 supermassive 黑色的洞块。 方法, 第一次应用,提供对传统的技术感到一致的结果。

    天文学家一直寻找不同的, 精确地的独立方式秤重最大的 supermassive 黑色的洞, 也就是说 , 是时代的十亿的那些比太阳更巨大。 直到现在,在如此大的黑色洞附近的一个磁盘片中以星的运动或瓦斯的观察为基础的方法被用。

    "因为黑色的洞可能是难懂的,而且只有一些方法要正确地秤重他们,这是巨大重要的工作 , " 加州大学的菲力浦韩弗理在欧文说,他[她] 引导了研究。 "它正在一再保证二个非常不同的方法测量大黑色的洞的块提供如此相似的答案 ."

    NGC 4649 是现在只有一把银河之一为哪一个 supermassive 黑色的洞块已经与二个不同的方法一起测量。 除此之外,这新的 X光技术确定在 NGC 4649 的 supermassive 黑色的洞以块大约三十四亿次太阳的在当地的宇宙是最大的之一,大约千乘比黑色的洞大在我们的银河的中心













    你有一个单词拼错了,我照抄下去了。是“supermassive”。

    翻译得好辛苦,你不选我的为答案,你会愧疚的!!!

    2009-08-12 | 添加评论 | 打赏

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