Credit & Copyright: X-ray in red -
NASA/
CXC/S.Allen
(Kavli Inst., Stanford)
et al.;
Radio in blue - NRAO/G.Taylor (VLA); Infrared in green - NASA/ESA/W.Harris (McMaster Univ.)
Explanation:
In many cosmic environments,
when material falls toward
a black hole energy is produced as some of the matter is
blasted back out in jets.
In fact, such black hole "engines" appear to be the most
efficient in the Universe, at least on a galactic scale.
This
composite image
illustrates one example of an
elliptical galaxy with an efficient
black hole engine, NGC 4696.
The large galaxy is the brightest member of the
Centaurus
galaxy cluster, some 150 million light-years away.
Exploring
NGC 4696
in x-rays (red) astronomers
can measure the rate at which infalling matter fuels the
supermassive black hole and compare
it to the energy output in the jets to
produce giant radio emitting bubbles.
The bubbles, shown here in blue, are about 10,000
light-years across.
The results confirm
that the process is much more efficient
than producing energy through nuclear reactions - not to mention
using fossil fuels.
Astronomers also suggest that as the black hole
pumps out
energy and heats the surrounding gas, star formation
is ultimately shut off, limiting the size of large galaxies like
NGC 4696.
Radio in blue - NRAO/G.Taylor (VLA); Infrared in green - NASA/ESA/W.Harris (McMaster Univ.)
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
galaxy cluster - supermassive black hole - эллиптическая галактика - Сверхмассивные черные дыры - джет
Публикации со словами: galaxy cluster - supermassive black hole - эллиптическая галактика - Сверхмассивные черные дыры - джет | |
См. также:
Все публикации на ту же тему >> | |
Мнение читателя [1]
