Chapter 1. 159 Detecting Black Holes

Map Learning Exercises

Question How do we "see" black holes that develop from massive stars?

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{"title":"X rays","description":"When matter begins to accrete around a black hole and fall into its gravity well, the gases begin to move very fast and emit X-ray radiation. It is important to remember that the X-rays are not being emitted by the black hole itself, but by the material falling into the black hole.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"rect\",\"coords\":\"14,132,312,202\"}]"}
Correct.

Question How do we "see" black holes that develop near the centers of galaxies?

{"title":"Radio waves","description":"Jets of gases appear to emerge from the centers of supermassive black holes, found in the center of many galaxies. These jets are best view in the radio portion of the spectrum.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"rect\",\"coords\":\"98,393,426,585\"}]"}
Correct.

Question Where's the evidence of the supermassive black hole?

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{"title":"Evidence","description":"In this image we are seeing a massive jet of gases blasting out of the center of this galaxy. Notice that this jet is FAR larger than the galaxy itself. Only a supermassive black hole could produce this effect. Nice work.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"poly\",\"coords\":\"71,77,205,203,245,215,261,262,246,272,230,251,233,245,220,247,205,225,181,211\"}]"}
Correct.