
The center of our galaxy from the European
Southern Observatory. Credit: ESO/S. Guisard.
The Hourglass Milky Way
Jun
28, 2010
Recent observations reveal a
dipolar "bubble" of gamma radiation
from the galactic nucleus.
Information obtained by
the Fermi Gamma Ray Space Telescope
has given astronomers another
puzzling knot to unravel: the twin
lobes of a gamma ray hourglass shape
extend outward beyond the
Milky Way's central
bulge. Each structure measures
approximately 65,000 light-years in
diameter.
Plasma physicists are familiar
with hourglass shapes. Rather than
"bubbles" of radiation, the
funicular formations are the
unmistakable signature of Birkeland
currents squeezing plasma and
charged dust into a z-pinch
compression zone. The intense
magnetic fields associated with
Birkeland current filaments cause
electrons to accelerate with
velocities close to light speed.
Those excited electrons emit
synchrotron radiation, the principle
source for gamma rays in space.
Electric Universe advocates have
long known that "radio lobes" far
above the poles of
active galaxies are the
signature of Birkeland currents.
Almost every body in the Universe
displays some kind of filamentation.
For example, the jets from energetic
galaxies, such as
M87, resolve into braided
filaments, while the spiral arms of
some galaxies exhibit
twisted strands of
material extending from their cores.
All those filaments are Birkeland
currents, but they only represent
the visible portion of an entire
circuit. Every element in a galactic
circuit radiates energy, and it must
be powered by its coupling with
larger circuits. The extent of those
larger circuits is unknown, but
since
galaxies occur in strings,
they must traverse millions of
light-years.
As more data accumulates from an
ever-increasing array of telescopes,
it is becoming increasingly obvious
that the Milky Way shares
characteristics with the rest of its
galactic family. A halo of stars,
filamentary structures, lobes of
radiation, a microwave "haze," and
other observed phenomena point to
its electrical nature.
Stephen Smith
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