File:Chandra X-ray Image with Scale Bar (2002-1273-more-5).jpg

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Chandra X-ray Image with Scale Bar Scale bar = 5 arcsec

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Description	English: Chandra X-ray Image with Scale Bar Scale bar = 5 arcsec
Date	13 March 2002 (upload date)
Source	Chandra X-ray Image with Scale Bar
Author	Credit: NASA/SAO/CXC/P.Green et al.
Other versions	TIFF version

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:32, 20 November 2024		648 × 648 (90 KB)	OptimusPrimeBot (talk \| contribs)	#Spacemedia - Upload of https://chandra.si.edu/photo/2002/1273/Q2345AB_scale.jpg via Commons:Spacemedia

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File:Chandra X-ray Image with Scale Bar (2002-1273-more-5).tiff

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Image title	Chandra's image of the supposed twin quasars Q2345+007 A,B shows that they are not identical twins. Further, the X-ray spectra of the two quasars are different which lends support to the idea that they are distinct objects created by merging galaxies. When galaxies collide, the flow of gas onto the central supermassive black holes of each of the galaxies can be enhanced, resulting in two quasars. Quasar pairs that appear close to one another on the sky and are at the same distance from Earth often turn out to be an illusion due to a gravitationally lensed system. Q2345+007 A,B was thought to be such an illusion because of remarkably similar patterns of their optical and ultraviolet light. However no intervening galaxy or cluster that could be the gravitational lens has been found for this pair.
Author	Chandra X-ray Observatory Center
Copyright holder	http://chandra.harvard.edu/photo/image_use.html
Source	Chandra X-ray Observatory
Headline	A closely aligned pair of quasars about 11 billion light years from Earth in the constellation Pisces.
Credit/Provider	NASA/SAO/CXC/P.Green et al.
Short title	Twin Quasars Tango And It's No Mirage
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	13 March 2002
Orientation	Normal
Exif version	2.21
Color space	Uncalibrated
Date and time of digitizing	12:40, 11 October 2007
Date metadata was last modified	07:37, 30 July 2012
Unique ID of original document	2B86ECD95D63734D5655D895BC2F6082
Keywords	Quasar Pair Q2345+007 A B
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4

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13 March 2002

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