Chapter 13. Quasars

Question Which portions of this object can be detected by astronomers?

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Question Understanding Einstein's Cross

Yp7H5IALKRh7dmEgkcqNMz+EqfT0SPFiIFneZFAbT3r9Ft9Xv6XmWilxnAIaedMpEKKQ0W+eM7gI8FtszvJiyLIJ15MBGlfNo1gvmAa7935ljFzgswo6coeMT++YAn/kj+EDZzsCg5QAPC+fPG207TpHtknwEBCYd7+zVXD0Eg/PSzmI3U/QJkOz8Z178Q4IDNcvUfKQj11mzZscz22wP4p/uKuN45xlAYEwZaZm8Hp/MCpQPnY7PQYam/2ZiQb+IGdWFQiJ9VwOFD3YrFnqpbWEqU3t170empb4Z8dp79PNNtk1BOecejbG4FsG4eJPa39bINbq49qcxvjsTJ2UxhP8/NQX7XGzlJsxjag+asy8veFCWBUOhkm+lExb3sQnNxP5zoGI7CsNlH8TAE6eoo/Becy7g+QEzMzacObR7jb/5KYvdfSfF23r/RA= {"title":"center","description":"Huchra's Lens, a small galaxy, sits so perfectly aligned with a distant quasar that the galaxy’s gravitational field bends and splits the light from the quasar into four separate images around itself, forming what is called an Einstein Cross.","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"circle\",\"coords\":\"257,245,20\"}]"} {"title":"outer","description":"This is one of the images that we see of the quasar. (We see four of them.) Huchra's Lens is the small galaxy that bends the light causing this strange effect. Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"circle\",\"coords\":\"241,192,16\"},{\"shape\":\"circle\",\"coords\":\"208,256,16\"},{\"shape\":\"circle\",\"coords\":\"251,301,17\"},{\"shape\":\"circle\",\"coords\":\"308,243,13\"}]"}

Question Redshifting Quasars

gc6QEOgqp41eksfKZONF81MB4prKdhrRtrPGXBq+zkYJK9ITi60ouGDr5RIUbFFuNrVU2+ePSTgUis6VdIja6Lq7W7xMG53KMFOliIvAvkuw5c93UUPloAywk9NDWl38vmVXBFUcpcIv8hm3SNdc+rOvLe9qgBeFvZFImXoYu0q4sMyr1hgGC/owq/SLlzWnIlxcBN43d4yO9ACONun/QhRKRL/gmkZECvS9HCmpeXXiQ3UYzwPSxAi5emNHeoWkngw/8fAiaKrzZnBNiL8pxWZRvBLM1s/q {"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":"Correct","type":"correct","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":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"400,42,465,330\"}]"}

Question Redshifting Quasars

J+OrG+wh011G68Y9CeI+4V1vSKhM5MK61XJHXfWWlC0gq+XVzCKJoPC6Bv2RkAZ1BJ696qkGN2EecitNHhjBOCy/ihus/xZ/pF5pWEeoMfaYSh47h9Etn97hK181Lth4iUrIo+yAYkXWCgoMvVnLhnVehdP1yCz5Ck+LoQ== {"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\"}]"}