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Дата изменения: Fri Mar 30 19:50:59 2001
Дата индексирования: Tue Dec 25 18:41:52 2007
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Поисковые слова: chandra
<b style="color:black;background-color:#ffff66">Chandra</b> Deep Field
Astronomy Picture of the Day
    


Chandra Deep Field
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Chandra Deep Field
Credit: R.Giacconi et al., JHU, AUI, NASA
Explanation: Officially the Chandra Deep Field - South, this picture represents the deepest ever x-ray image of the Universe. One million seconds of accumulated exposure time with the orbiting Chandra X-ray Observatory went in to its making. Concentrating on a single, otherwise unremarkable patch of sky in the constellation Fornax, this x-ray image corresponds to the visible light Hubble Deep Field - South released in 1998. Chandra's view, color coded with low energies in red, medium in green, and high-energy x-rays in blue, shows many faint sources of relatively high-energy x-rays. These are likely active galaxies feeding supermassive central black holes and large clusters of galaxies at distances of up to 12 billion light-years. The stunning picture supports astronomers' ideas of a youthful universe in which massive black holes were much more dominant than at present.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: black hole - X-ray - Chandra - deep field - background
Publications with words: black hole - X-ray - Chandra - deep field - background
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