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File:Quasars in interacting galaxies.jpg

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English: [Top Row]

This is a selection of photos from a Hubble Space Telescope survey of 11 ultra-bright quasars that existed at the peak of the universe's star-formation era, which was 12 billion years ago. The quasars (powered by supermassive black holes) are so compact and bright they make a diffraction-spike pattern in the telescope's optics - an optical artifact typically only produced by bright nearby stars. Despite their brightness, the quasars are actually dimmed by dusty gas around them. The infrared capability of Hubble's Wide Field Camera 3 was able to probe deeply into the material around the quasars.

[Bottom Row]

When the glare of the quasar is subtracted, researchers see evidence for collisions between galaxies. The collisions and mergers gave birth to the quasars by fueling the supermassive black hole at the core of the galaxies. The new images capture the dust-clearing transitional phase in the merger-driven quasar birth. These observations show that the brightest quasars in the universe live in merging galaxies.
Date
Source http://www.spacetelescope.org/images/opo1520a/
Author NASA, ESA, and E. Glikman (Middlebury College, Vermont)
Other versions File:Teen-quasars.jpg

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This file is licensed under the Creative Commons Attribution 4.0 International license.
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inception

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Date/TimeThumbnailDimensionsUserComment
current09:06, 31 December 2019Thumbnail for version as of 09:06, 31 December 20193,000 × 2,400 (1.64 MB)BevinKaconactual size from source
09:18, 19 June 2015Thumbnail for version as of 09:18, 19 June 20151,280 × 1,024 (249 KB)JmencisomUser created page with UploadWizard

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