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Vade Retro Satanas, the Galaxies are crazy!
They bubble! |
A Galactic Cauldron, NGC 3079 |
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On August 16th, 2001, the
NASA (STScI)
publishes on Internet the photography of
NGC 3079 and a zoom on its core, obtained by the
HST, accompanied with the following note:
These NASA Hubble Space Telescope snapshots reveal
dramatic activities within the core of the galaxy NGC 3079, where a lumpy
bubble of hot gas is rising from a cauldron of glowing matter. The picture
(at left) shows the bubble in the center of the galaxy's disk. The
structure is more than 3,000 light-years wide and rises 3,500 light-years
above the galaxy's disk. The smaller photo (at right) is a close-up view
of the bubble. Astronomers suspect that the bubble is being blown by "winds"
(high-speed streams of particles) released during a burst of star
formation. Gaseous filaments at the top of the bubble are whirling around
in a vortex and are being expelled into space. Eventually, this gas will
rain down upon the galaxy's disk where it may collide with gas clouds,
compress them, and form a new generation of stars. The two white dots just
above the bubble are probably stars in the galaxy.
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Comments:
These photos, remarkable and exceptional by their
quality, deserve an attentive examination. The questions which assail me
are::
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What are and wherefrom these gas strands arise
which are thrown above the central bulb of the galaxy ?
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Do they come directly and vertically from a
possible central black hole, or do they take another path?
If they spring vertically from a black hole, then one
of the hypotheses that I formulated previously about the black hole of M87
would, in fact, be contradicted, that is the ejection of mass takes place
only in the plane of rotation of the black hole.
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To try to eliminate the doubt, I make some digital
processing, and I obtain the two images shown:
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At first sight, nothing is amiss. But if we zoom on
the image, as shown, we can observe on one hand, the very particular
morphology of the central bulb, and on the other hand, the existence of
two symmetric arms of mass ejected
from the bulb and in the plane of the galaxy.
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Note that the structure of the core, revealed here,
presents big resemblances with the morphology of the
MilkyeWay,
whose a peeviously DP image we can see opposite. The resemblance is much
more than a simple analogy. It is obviously a part of a very general
phenomenon.
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But this image still does not allow to determine for
sure on the route of the strands of gases ejected from the bulb. So I
make an additional processing of the original picture.
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Voie Lactée

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Now things begin to appear more clearly.
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The strands of gas are ejected from the bulb, but
in the plane of the galaxy. Their trajectories then move
perpendicularly to this plane, only much farther out.
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It is impossible to be definitive on the exact
morphology of the central bulb, the original image, which is saturated
in this area, does not allow a through analysis. Also the resolution
remains insufficient.
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Hypothesis |
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The strands of gas (plasmas) are guided by the
magnetic field in the galaxy core.
We cannot reject a priori this hypothesis. However it
does not seem essential. If it were the case, and if the dominant
magnetic field is the one who arises from the core, then the strands
would have quite another shape; they would be confined by this field and
the global shape would not be that of a tulip, but that of a sheaf.
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The strands are subjected to the viscosity of the
surroundings in which they are ejected.
This hypothesis, even if it seems a priori absurd, is
the one which allows the best interpretation. Especially as all the
processed images of galaxies tend to confirms this, whether it is
ESO 269-57, NGC
1512, or
ESO 510-13.
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Conclusion |
The density of the mass (gas)
in the cores of galaxies is big enough to infer detectable effects of
viscosity.
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Documentation |
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Last Release:
06/01/13 |
A
Snag in the Gravitationnal Lens : |
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