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Астронет: Астрономическая картинка дня Пойманные в сеть: слияние черных дыр в туманности Тарантул http://www.astronet.ru/db/msg/1996346/eng |
Credit & Copyright: Artwork: Carl Knox
(OzGrav,
Swinburne University of Technology);
Astrophotography: Blake Estes & Christian Sasse, iTelescope.net; Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
Explanation:
How can we see what is invisible?
Black holes are not
easy to see in the dark cosmic night, but astronomers can find them by analyzing
their gravitational effects on matter,
light and spacetime.
The featured image
shows an illustration that combines a simulation of a black hole binary system in
its final "death-dance"
with an astrophotography image of the Tarantula
Nebula in the background.
Even though black holes don't emit light, they distort the path of light rays, acting
like a gravitational lens.
As a result, the nebula appears extremely distorted, forming Einstein
rings and multiple
images.
Tarantula Nebula lies in the Large
Magellanic Cloud, a dwarf galaxy that is one of the satellite
galaxies of the Milky Way, 160,000
light-years away.
That is more than 1,000
times closer than any of the binary black hole mergers detected so
far.
We'll probably never detect a merger so close to home!
Astrophotography: Blake Estes & Christian Sasse, iTelescope.net; Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
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.