Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/1168141
Дата изменения: Thu May 17 15:09:04 2001
Дата индексирования: Tue Dec 25 17:02:10 2007
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Поисковые слова: annular solar eclipse
The Center of the Circinus Galaxy in X Rays
Astronomy Picture of the Day
    


The Center of the Circinus Galaxy in X Rays
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The Center of the Circinus Galaxy in X Rays
Credit: F. Bauer (Penn State) et al., Chandra, NASA
Explanation: Are black holes the cause of X-rays that pour out from the center of the Circinus galaxy? A new high-resolution image from the orbiting Chandra X-ray Observatory has resolved the inner regions of this nearby galaxy into several smaller sources. The image is shown above in representative-color. Extended X-ray emission from the center appears to match optical light and appears consistent with a model where hot gas is escaping from a supermassive black hole at Circinus' center. At least one of the other sources varies its X-ray brightness as expected from a binary star system, indicating that the system is small yet massive, and giving credence to a model where a black hole is surrounded by doughnut-shaped ring. The region shown spans about 5000 light-years across.

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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 - Circinus Galaxy
Publications with words: black hole - X-ray - Circinus Galaxy
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