Astronomers Think Powerful , Magnetic Winds Drive Growth , of Supermassive Black Holes.
'Newsweek' reports that scientists may have
unraveled the mystery of how supermassive
black holes are able to become so massive.
According to a new paper, a powerful magnetic
wind, comparable to water swirling around
a drain, is what allows these massive cosmic
phenomena to reach such immense sizes.
A supermassive black hole is typically millions to
billions of times more massive than our own sun
and is often found at the center of most galaxies. .
The paper, which was published in the journal 'Astronomy
and Astrophysics,' focused on the black hole at the
center of a galaxy about 120 million light-years from Earth.
This galaxy, known as ESO320-G030, is much more
active than our own Milky Way, with a rate of star
formation 10 times that of our own galaxy.
Using the Atacama Large Millimeter Array (ALMA) telescope,
researchers found a strong, rotating, magnetized
wind spinning around the center of the black hole.
Using the Atacama Large Millimeter Array (ALMA) telescope,
researchers found a strong, rotating, magnetized
wind spinning around the center of the black hole.
Since this galaxy is very
luminous in the infrared,
telescopes can resolve
striking details in its center. , Susanne Aalto, study co-author and a professor
of radio astronomy at Chalmers University
of Technology, via 'Newsweek'.
'Newsweek' reports that the team now hopes to observe the
centers of other galaxies to confirm if this process is what
enables a supermassive black hole's immense growth.
Far from all questions about this
process are answered. In our
observations we see clear evidence
of a rotating wind that helps
regulate the growth of the
galaxy's central black hole. , Mark Gorski, study co-author and an astronomer
at Chalmers University of Technology and
Northwestern University, via 'Newsweek'.
Now that we know what to look for,
the next step is to find out how
common a phenomenon this is.
And if this is a stage which all
galaxies with supermassive
black holes go through,
what happens to them next?, Mark Gorski, study co-author and an astronomer
at Chalmers University of Technology and
Northwestern University, via 'Newsweek'
Credit: Wibbitz Top Stories Duration: 01:31Published
Scientists Use 'Dyson Sphere' , Signature to Search for , Potential Alien Life.
Decades ago, physicist Freeman Dyson theorized that a
shell made of solar panels that surrounds a star would be
the ultimate energy solution for an advanced civilization. .
One should expect that, within a few
thousand years of its entering the stage
of industrial development, any intelligent
species should be found occupying an
artificial biosphere which completely
surrounds its parent star, Freeman Dyson, 1960 paper, via CNN.
CNN reports that the concept took
hold and the hypothetical megastructures
have come to be called Dyson spheres. .
At the time, Dyson suggested that
these spheres would emit waste heat
as detectable infrared radiation.
The British American physicist suggested
that this unique radiation signature could
be a way of finding extraterrestrial life. .
It would be much more
rewarding to search directly
for intelligence, but technology
is the only thing we have
any chance of seeing, Matías Suazo, Lead study author and a doctoral student
in the department of physics and astronomy
of Uppsala University in Sweden, via CNN.
A new study searched five million stars in the Milky Way
galaxy to find seven candidates that could potentially
be home to an advanced civilization's Dyson sphere.
It’s difficult for us to find
an explanation for these sources,
because we don’t have enough
data to prove what is the real
cause of the infrared glow, Matías Suazo, Lead study author and a doctoral student in
the department of physics and astronomy of
Uppsala University in Sweden, via CNN.
It’s difficult for us to find
an explanation for these sources,
because we don’t have enough
data to prove what is the real
cause of the infrared glow, Matías Suazo, Lead study author and a doctoral student in
the department of physics and astronomy of
Uppsala University in Sweden, via CNN.
They could be Dyson spheres,
because they behave like our
models predict, but they could
be something else as well, Matías Suazo, Lead study author and a doctoral student
in the department of physics and astronomy
of Uppsala University in Sweden, via CNN.
The team's findings were published
in the journal 'Monthly Notices of
the Royal Astronomical Society.'
Credit: Wibbitz Top Stories Duration: 01:31Published
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