Chapter 12. Detecting Black Holes

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

VMdJNqwoXDxdbYaGykro6EaO2r/Pike+OD4KTBeLgJ1coMm3JjmmH3uUfTI7UV2RhapzALRGu+6tYBdyTbt5JT7ZrdWYfqqRgoy1LjhyFG6WtgBqYBI5c9NJCrN+cGrzjXMmtVwIB6YkfZ7vdrSkzDHp/4q9Fra7CqJ9wLZYmtE= {"title":"gamma","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"31,14,323,119\"}]"} {"title":"xray","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":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,119,318,183\"}]"} {"title":"visible","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"25,179,317,219\"}]"} {"title":"infrared","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,222,318,290\"}]"} {"title":"microwaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"27,291,319,337\"}]"} {"title":"radiowaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"24,336,316,487\"}]"}

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

Wp1N0sl9M8hMmCbA4P5qZ+ulnO6OUI2U/btDzBpsvOxe450r5tLITNk3XeC0fOrrkuVBOGl5K63jMZQvxXjk7Xb73srd53QHwiMll/ms5kwjHSmvukQ90R1D2VdGGqJlvc5zR/eZKWzqk7EcMA+FtEYizOYNtUXl5ZUmsxvgA6j8JoyJR/61FD6QfnvOZIJ3dVDkkyNMfKW4jbrWXW1v4c4edzk9vGcPaDxqZg== {"title":"gamma","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"31,14,323,119\"}]"} {"title":"xray","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,119,318,183\"}]"} {"title":"visible","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"25,179,317,219\"}]"} {"title":"infrared","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,222,318,290\"}]"} {"title":"microwaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"27,291,319,337\"}]"} {"title":"radiowaves","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":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"24,336,316,487\"}]"}