This composite NASA image of the spiral galaxy M81, located about 12 million light years away, includes X-ray data from the Chandra X-ray Observatory (blue), optical data from the Hubble Space Telescope (green), infrared data from the Spitzer Space Telescope (pink) and ultraviolet data from GALEX (purple). The inset shows a close-up of the Chandra image. At the center of M81 is a supermassive black hole that is about 70 million times more massive than the Sun.
A new study using data from Chandra and ground-based telescopes, combined with detailed theoretical models, shows that the supermassive black hole in M81 feeds just like stellar mass black holes, with masses of only about ten times that of the Sun. This discovery supports the implication of Einstein's relativity theory that black holes of all sizes have similar properties, and will be useful for predicting the properties of a conjectured new class of black holes.
这张来自NASA的复合图是漩涡星系M81,距离12000000光年,图像包含了来自钱德拉的X射线数据(蓝色),可见光由自哈勃望远镜(绿色),红外数据来自斯必泽望远镜(粉红色),紫外波段的来自雨燕(紫色)。其中的插图展示了M81的细节,在其中心是一个超大质量黑洞,大约是太阳的70000000倍。
新研究利用了来自钱德拉和基地望远镜的数据,结合了完整的理论模型,表明M81中的超大质量黑洞进食就像质量仅有太阳十倍左右的恒星级黑洞一样,其质量仅是太阳的10倍。找个发现支持了爱因斯坦相对论关于所有类型黑洞都有着相似性质的说法,另外这对预测一个类似新黑洞的性质是非常有帮助的。
自翻,虽然图片不大,但是感觉这张M81很精致
URL:http://chandra.harvard.edu/photo/2008/m81/index.html
[ 本帖最后由 江涛 于 2008-6-28 00:27 编辑 ] |
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