【钱德拉】银河系中心的新面貌
http://chandra.harvard.edu/photo/2009/gcenter/gcenter.jpgA dramatic new vista of the center of the Milky Way galaxy from NASA's Chandra X-ray Observatory exposes new levels of the complexity and intrigue in the Galactic center. The mosaic of 88 Chandra pointings represents a freeze-frame of the spectacle of stellar evolution, from bright young stars to black holes, in a crowded, hostile environment dominated by a central, supermassive black hole.
Permeating the region is a diffuse haze of X-ray light from gas that has been heated to millions of degrees by winds from massive young stars - which appear to form more frequently here than elsewhere in the Galaxy - explosions of dying stars, and outflows powered by the supermassive black hole - known as Sagittarius A* (Sgr A*). Data from Chandra and other X-ray telescopes suggest that giant X-ray flares from this black hole occurred about 50 and about 300 years earlier.
The area around Sgr A* also contains several mysterious X-ray filaments. Some of these likely represent huge magnetic structures interacting with streams of very energetic electrons produced by rapidly spinning neutron stars or perhaps by a gigantic analog of a solar flare.
Scattered throughout the region are thousands of point-like X-ray sources. These are produced by normal stars feeding material onto the compact, dense remains of stars that have reached the end of their evolutionary trail - white dwarfs, neutron stars and black holes.
Because X-rays penetrate the gas and dust that blocks optical light coming from the center of the galaxy, Chandra is a powerful tool for studying the Galactic Center. This image combines low energy X-rays (colored red), intermediate energy X-rays (green) and high energy X-rays (blue).
The image is being released at the beginning of the "Chandra's First Decade of Discovery" symposium being held in Boston, Mass. This four-day conference will celebrate the great science Chandra has uncovered in its first ten years of operations. To help commemorate this event, several of the astronauts who were onboard the Space Shuttle Columbia - including Commander Eileen Collins - that launched Chandra on July 23, 1999, will be in attendance.
转自钱德拉网站
1280宽屏壁纸
http://chandra.harvard.edu/graphics/resources/desktops/2009/gcenter_1280_800.jpg 漂亮。。。。 什么时候能做飞船去旅游一下yct61.gif yct01.gif 钱德拉 的却好强大 像去看看银河中间到底什么样子 我想问下，有人类飞行器飞出银河系了吗？这类图片是人类一厢情愿想象画出来的、还是外星生命拍后送来个地球人的？
qingyuan22 发表于 2009-10-15 04:15 http://www.astronomy.com.cn/bbs/images/common/back.gif
::070821_18.jpg:: 兄台看清楚了，这是钱德拉远望镜拍的，是实实在在的。我们目前没有能力飞不出银河系不代表我们没有能拍银河系 这是不是用X射线波段拍的？ 英语的哎 该好好学习英语啦 这是不是用X射线波段拍的？
圣卡西 发表于 2009-10-16 19:00 http://www.astronomy.com.cn/bbs/images/common/back.gif
应该是
from NASA's Chandra X-ray Observatory exposes new levels 本期的文爱好者杂志，特别对钱德拉做了专版的10年回顾，大家看以看看，毕竟翻译的水平很高，看的明白！ 银河系中心，星体密集，美啊
哦，已经翻译出来了，去看看 银河系中心，星体密集，美啊
哦，已经翻译出来了，去看
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