Chapter 13. Quasars

Map Learning Exercises

Question 1 of 4

Quasars

Which portions of this object can be detected by astronomers?

Click on all parts of this structure that give off light that can be detected with telescopes.

{"title":"magnetic","description":"Are there other parts of the black hole that we can detect?","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"poly\",\"coords\":\"103,165,179,114,485,101,488,286,169,269,104,217\"},{\"shape\":\"poly\",\"coords\":\"2,126,4,252,55,221,55,146\"}]"} {"title":"accretion","description":"Are there other parts of the black hole that we can detect?","type":"correct","color":"#ffffff","code":"[{\"shape\":\"poly\",\"coords\":\"81,49,61,81,60,291,72,322,90,290,93,78\"}]"}

Correct.

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Redshifting Quasars

Imagine a quasar farther from us than this one. Click on the graph to show where that quasar's H-alpha line would peak.

{"title":"purple","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"48,40,81,328\"}]"} {"title":"blue","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"79,40,112,328\"}]"} {"title":"green","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"121,40,195,328\"}]"} {"title":"orange","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"202,40,267,328\"}]"} {"title":"red","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"268,40,333,328\"}]"} {"title":"infrared1","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"332,40,397,328\"}]"} {"title":"infrared2","description":"If a quasar were farther away, it would be traveling away from us, even faster than this one. It would also be more redshifted. This rule is so reliable, that when it comes to objects that are this far away, astronomers don't talk about their distances in light years or parsecs, but in \"redshifts\".","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"400,42,465,330\"}]"}

Correct.

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Chapter 13. Quasars

Quasars

Which portions of this object can be detected by astronomers?

Understanding Einstein's Cross

Redshifting Quasars

Redshifting Quasars