【新闻】黑洞照片

Drifter

看着很漂亮. 跟以前的预测很接近.

金栋

没有洞呀

角落獨舞

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阿叔

怎么证明这就是黑洞呢？

Drifter

A dramatic new Chandra image of the nearby galaxy Centaurus A provides one of the best views to date of the effects of an active supermassive black hole. Opposing jets of high-energy particles can be seen extending to the outer reaches of the galaxy, and numerous smaller black holes in binary star systems are also visible.

The image was made from an ultra-deep look at the galaxy Centaurus A, equivalent to more than seven days of continuous observations. Centaurus A is the nearest galaxy to Earth that contains a supermassive black hole actively powering a jet.

A prominent X-ray jet extending for 13,000 light years points to the upper left in the image, with a shorter "counterjet" aimed in the opposite direction. Astronomers think that such jets are important vehicles for transporting energy from the black hole to the much larger dimensions of a galaxy, and affecting the rate at which stars form there.

High-energy electrons spiraling around magnetic field lines produce the X-ray emission from the jet and counterjet. This emission quickly saps the energy from the electrons, so they must be continually reaccelerated or the X-rays will fade out. Knot-like features in the jets detected in the Chandra image show where the acceleration of particles to high energies is currently occurring, and provides important clues to understanding the process that accelerates the electrons to near-light speeds.

The inner part of the X-ray jet close to the black hole is dominated by these knots of X-ray emission, which probably come from shock waves -- akin to sonic booms -- caused by the jet. Farther from the black hole there is more diffuse X-ray emission in the jet. The cause of particle acceleration in this part of the jet is unknown.

Hundreds of point-like sources are also seen in the Chandra image. Many of these are X-ray binaries that contain a stellar-mass black hole and a companion star in orbit around one another. Determining the population and properties of these black holes should help scientists better understand the evolution of massive stars and the formation of black holes.

Another surprise was the detection of two particularly bright X-ray binaries. These sources may contain stellar mass black holes that are unusually massive, and this Chandra observation might have caught them gobbling up material at a high rate.

In this image, low-energy X-rays are colored red, intermediate-energy X-rays are green, and the highest-energy X-rays detected by Chandra are blue. The dark green and blue bands running almost perpendicular to the jet are dust lanes that absorb X-rays. This dust lane was created when Centaurus A merged with another galaxy perhaps 100 million years ago.

This research was presented at the American Astronomical Society meeting on January 9th by Gregory Sivakoff (The Ohio State University). Other team members include Ralph Kraft (Harvard-Smithsonian Center for Astrophysics), Martin Hardcastle (University of Hertfordshire), Diana Worrall (University of Bristol), and Andres Jordan (Smithsonian Astrophysical Observatory). NASA's Marshall Space Flight Center, Huntsville, Ala., manages the Chandra program for the agency's Science Mission Directorate. The Smithsonian Astrophysical Observatory controls science and flight operations from the Chandra X-ray Center in Cambridge, Mass.

Additional information and images are available at:

Drifter

QUOTE:

Posted by 角落獨舞 on 2008-1-12 12:45

那个部分是黑洞？

中间兰色的那里.

深圳

看不明白的说，呵呵。

lawbreaker

怎么可能？黑洞根本拍不出照片，光都无法逃逸。

角落獨舞

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cxcx

黑洞怎么会有光呢？黑洞应该是把所有物质吸进去才对，不可能发光的呀

ibm老菜

纯属电脑特技

Remon

支持老财。

coolnight9

坐标多少，上GE上看看去。

Leminc

不是说黑洞连光线都不放过吗？连光线都不放过的话，应该是黑色的才对啊，怎么现在看来像是一个发光的球体？？

ibm老菜

QUOTE:

Posted by Leminc on 2008-1-12 12:51

不是说黑洞连光线都不放过吗？连光线都不放过的话，应该是黑色的才对啊，怎么现在看来像是一个发光的球体？？

引力场也是有范围的,
光从边上绕绕不行吗?
没看见光线"弯曲"了嘛

Drifter

http://gs.cnr.cn/gsxw/tpxw/200801/t20080111_504676417.html

开水100℃

可不可以这么认为：所有的物质包括光都奔那去了，所以能看到亮

bigstone

光线都给吸进去了，没有反射，咋还有亮哩？

coolnight9

大家装个GE吧。里面的星空模式很漂亮

[ Edited by coolnight9 on 2008-1-12 13:16 ]

maithon

黑洞周围的还是可以拍照的嘛

cya55

看不出来光线哪里扭曲了

伞

在吃东西的过程中听说会推出很强的X射线,用个X射线影相机就可以影到相片啦.

lotcor

黑洞会往外抛物质的，那束光就是抛出来的东西，好像是垂直于法线的。几何处处在呀

花花公子飞

不是吸光嘛。。。怎么成像。。。这是人工臆想的图吧

Drifter

QUOTE:

Posted by 花花公子飞 on 2008-1-12 15:17

不是吸光嘛。。。怎么成像。。。这是人工臆想的图吧

这是照片.

黑洞只是本身看不到而已. 本身一般都不大的. 看到的是周围的东西.

sharpless

google sky

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【新闻】黑洞照片

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