Originally Posted by BeAChooser
Too bad the other side isn't as open in considering the possibility that electromagnetic effects play a fundamental role in the formation and behavior of stars and galaxies.
http://en.wikipedia.org/wiki/Astrophysical_plasma
You only prove my point. That sites states "Since plasmas contain equal numbers of electrons and ions, they are electrically neutral overall and thus electric fields play a lesser dynamical role. Because plasmas are highly conductive, any charge imbalances are readily neutralised." It argues that electromagnetic effects do NOT play a fundamental role.
Experts in plasma such as Birkeland, Alfven and Peratt would disagree and point to objects we can see in the heavens that are immense ... thousands of light years in size ... and argue they are the result of electromagnetic forces applied to plasmas. They would point to models they have made which captured those physics and showed their potentially large effect on the formation and behavior of large objects ...even the size of galaxies.
And it's disingenuous for that website to state "During the 1940s and 50s, Alfvén developed magnetohydrodynamics (MHD) which enables plasmas to be modelled as waves in a fluid, for which Alfvén won the 1970 Nobel Prize for physics. MHD is a standard astronomical tool." That's because Alfven specifically stated that MHD was not the right tool to model galaxies and stars where phenomena like double layers and Birkeland currents occur.
The source is also dishonest in stating that "current models indicate that plasma processes have little role to play in forming the very largest structures, such as voids, galaxy clusters and superclusters." Dishonest because current models do not include electromagnetic effects such as those Alfven and others say play a role in the formation of those structures. And the website fails to even mention the MANY problems mainstream astrophysicists are having with their models and their explanation of those large structures. I've posted several times articles discussing a number of those problems. Your side in this debate has consistently ignored what I posted. Just like the Big Bang community has done. Because they aren't open to any explanation but gravity. Q.E.D.
So, magnetic influences are considered but not electrical influences because on a large scale plasmas tend to be electrically neutral containing the same number of positive and negative charges.
This statement shows a profound lack of understanding of the physics involved. Plasmas are not electrically neutral. They are QUASI-neutral and in fact can create very large structures.
Let me give you one of the many examples I can provide of what I mean by the mainstream being close-minded and unfamiliar with important plasma phenomena.
"The Galactic Center Magnetosphere" by Mark Morris, Department of Physics & Astronomy, UCLA, 2006 mentions the recently discovered Double Helix Nebula. Here are several images of the nebula.
http://www.nature.com/nature/journal/v440/n7082/images/nature04554-f1.2.jpg
http://www.broad.mit.edu/news-images/TRC-032306.jpg
Morris states "At a distance of ~100 pc toward positive Galactic latitude from the Galactic center, a nebula having the form of an intertwined double helix extends over at least 50 pc, with its long axis oriented approximately perpendicular to the Galactic plane (Figure 2). This feature was interpreted as a torsional Alfven wave propagating away from the Galactic center along the magnetic field, and driven by the rotation of the circumnuclear gas disk (CND). ... snip ... The presence of two strands has been attributed to an apparent ”dumbbell” asymmetry of the driving disk (see [65]); the magnetic field threading the disk is concentrated into two diametrically opposed density maxima. A potential weakness of the torsional wave hypothesis is that the wave cannot yet be followed all the way down to its hypothetical source, the CND. However, this also raises the question of why the double helix is visible in the first place; its mid-infrared emission is most likely thermal emission from dust, so the visibility of the nebula at its present location presumably requires that the wave has levitated charged dust grains. ... snip ...
There is so far no explanation for how a long bundle of linear, nonthermal filaments could culminate in helically wound, thermal structures."
What a shame that Morris is unfamiliar with force-free Birkeland filaments (
http://www.plasma-universe.com/index.php/Filamentation) as they easily explain the shape and other features of the nebula. Instead, he believes in the black hole and "anchored" magnetic field gnomes. As is noted in
http://www.physicalsciences.ucla.edu/research/doublehelix.asp , "Morris has argued for many years that the magnetic field at the galactic center is extremely strong; the research published in Nature strongly supports that view. The magnetic field at the galactic center, though 1,000 times weaker than the magnetic field on the sun, occupies such a large volume that it has vastly more energy than the magnetic field on the sun. It has the energy equivalent of 1,000 supernovae. What launches the wave, twisting the magnetic field lines near the center of the Milky Way? Morris thinks the answer is not the monstrous black hole at the galactic center, at least not directly. Orbiting the black hole like the rings of Saturn, several light years away, is a massive disk of gas called the circumnuclear disk; Morris hypothesizes that the magnetic field lines are anchored in this disk." He'd rather believe in gnomes than consider the possibility that these are Birkeland currents.
Everywhere we look we see evidence of Birkeland currents. The sprites, elves, and blue jets associated with electrical storms in Earth's atmosphere are examples. They contribute to Earth's auroras. They are found on other planets (such as this evidence for them on Saturn:
http://www.holoscience.com/news.php?article=a0fu5dte and
http://adsabs.harvard.edu/abs/1984agu..conf..340H ). They are seen on the surface of the sun in solar flares.
http://www.electric-cosmos.org/solarflare.jpg
http://www.electric-cosmos.org/Twists.jpg
We find them in the interstellar medium ...
http://antwrp.gsfc.nasa.gov/apod/image/0004/cygloop_blair.jpg
The Cygnus Loop above has all the characteristics of an interstellar Birkeland current: (1) A plasma medium (2) Filamentation (3) Braiding, twisted "rope-like" structure.
http://public.lanl.gov/alp/plasma/CIV.html "IMMENSE FLOWS OF CHARGED PARTICLES DISCOVERED BETWEEN THE STARS ... snip ... A plasma scientist and a radio astronomer announced the discovery of charged particle flows in interstellar space at the 1999 International Conference on Plasma Science in Monterey, California. ... snip ... The discovery was called "Exciting," by S. T. Lai, a researcher at the Air Force Research Laboratory in Hanscom, MA. Lai, an authority on a phenomena called "critical ionization velocity," who noted that the data fell precisely where predicted by the late physics Nobel laureate Hannes Alfvén (1908-1995), who in his theory about the origin of planets in 1942, calculated that if a neutral cloud in space fell through a magnetized plasma, the neutral gas would itself become ionized at discrete velocities. Alfvén predicted that the signature of his plasma theory in space would be the observation of filaments and his discrete velocities."
... and in the heart of our own galaxy ...
http://www.thunderbolts.info/tpod/2004/images/040723galactic-filaments.jpg
... and also in other galaxies. For example, NGC 3079 has a very Active Galactic Nucleus (AGN), as one can see in the image below:
http://imgsrc.hubblesite.org/hu/db/2001/28/images/a/formats/compass_large_web.jpg
A close up of the core reveals four columns of gaseous filaments that rise above the galaxy's disk.
http://imgsrc.hubblesite.org/hu/db/2001/28/images/c/formats/full_jpg.jpg
The filaments reach the amazing height of 2,000 light-years with each about 75 light-years wide. Big Bang astronomers "suspect" that these filaments are particles blown by "winds" released during a burst of star formation. But experts in plasma and electromagnitism say those are spiraling Birkeland currents that are part of the galaxy's homopolar magnetic field (
http://www.thunderbolts.info/tpod/2004/arch/041026paradigm-galaxy.htm).
And we find evidence of Birkeland currents between the galaxies.
http://www.nature.com/nature/journal/v341/n6244/abs/341720a0.html "Discovery of intergalactic radio emission in the Coma–A1367 supercluster ... snip ... Here we describe the detection of faint, supercluster-scale radio emission at 326 MHz that extends between the Coma cluster of galaxies (Abell 1656) and the Abell 1367 cluster and which is apparently not associated with any individual galaxy system in the complex. The radiation's synchrotron origin implies the existence of a large-scale intercluster magnetic field with an estimated strength of 0.3–0.6 G, which is remarkably strong."
http://public.lanl.gov/alp/plasma/AtHomeMag.html "One of the most compelling pieces of evidence for the existence of supercluster-sized currents comes from the discovery of faint supercluster-scale radio emissions at 326 megahertz between the Coma galaxy cluster and the Abell 1367 cluster. Given that radiation of that frequency must be produced by free electrons moving at certain very high speeds, we can infer magnetic-field strengths of 0.03–0.06 nanotesla stretching for some 490 million light-years. This corresponds to a galactic current of nearly 1019 amperes."
Everywhere we look there is evidence of Birkeland currents ... yet mainstream astronomers just can't seem to see it. Because to do so threatens their precious gnomes ... and the biggest, most precious gnome of all, the Big Bang.
And don't get me started on "double layers" and z-pinches, two other phenomena that mainstream astrophysicists and your source seem to try their best to simply ignore.
Based on your own (incorrect) assertions gravity would significantly dominate large scale structure not “electrical” repulsion or attraction.
No, you, like so many it's-only-gravity proponents simply fail to understand the difference between the little problem Ziggurat has posed and the physics of force-free Birkeland currents.
Originally Posted by BeAChooser
If you believe that, then find a mainstream source that mentions Birkeland currents and double layers in regards to solar phenomena and galactic rotation curves.
http://en.wikipedia.org/wiki/Plasma_..._double_layers
Must I point out that's not a mainstream source? And it doesn't even mention double layers as a possible explanation for various solar phenomena. No, I'm talking about a recent peer reviewed article in a mainstream journal on the behavior of the sun or galaxies that even mentions Birkeland currents and double layers ... if even just to discount them as a cause of the observed phenomena. Let's see if you can find any of those.
And you think by linking a paper done in 1982 by a proponent of plasma cosmology and associate of Alfven you show that the mainstream has considered it? Who do you think you are kidding?
Again, you only prove my point. This is an article written in 1993 which notes double layers might be responsible for the emissions from pulsars. It was obviously ignored by the rest of mainstream physics community. Also, note that the source spends a lot of time on the bogus gnome of magnetic reconnection and assumes we know what neutron stars are (we don't really). It's hard to not laugh at a source that back in 1993 was treating magnetic reconnection as if it were proven physics when in 2007 they still haven't proven it or tend to describe phenomena that sound like exploding double layers in their "proofs".
But to those authors credit, at least they mention double layers as the other possible cause of the emissions. They note that double layers are "effective particle accelerators." The authors find they could produce the 10^^15 volt discharges that are observed. This is something that seems to have been completely forgotten in most mainstream work since that time.
And are you aware that in a 1995 analysis, "Radiation Properties of Pulsar Magnetospheres: Observation, Theory, and Experiment" by Kevin Healy and Anthony Peratt (
http://public.lanl.gov/alp/plasma/downloads/HealyPeratt1995.pdf ), Healy and Peratt concluded, “Our results support the ‘planetary magnetosphere’ view, where the extent of the magnetosphere, not emission points on a rotating surface, determines the pulsar emission. In other words, we do not require a hypothetical super-condensed object to form a pulsar. A normal stellar remnant undergoing periodic discharges will suffice. Plasma cosmology has the virtue of not requiring neutron stars or black holes
(BAC - or quark stars) to explain compact sources of radiation."
Again, you cite an article from 1978 ("The Alfven-Carlquist double-layer theory of solar flares") which says "the applicability of this theory to solar flares is discussed, and it is shown that conditions in solar flares may be such that double layers can exist for which the free particles have a power-law energy distribution. These particles will be accelerated in a double layer and may in this way account for the production of high-energy particles during the impulsive phase of solar flares." Their paper concluded "altogether, we feel that the double-layer model of solar flares probably deserves further study." Yet this conclusion was ignored by the mainstream and is still being ignored by astrophysicists who instead rely on the unproven reconnection gnome to explain solar flares and who never mention double layers in their articles. In fact, their MHD models can't even reproduce the physics of double layers. You are proving my point for me.
Next you offer an article from 1977 regarding double layers in Earth's vicinity. At least mainstream astrophysicists can't claim they never heard of double layers or that researchers back in the 70's and 80's weren't saying they could explain phenomena observed in space with them. But current mainstream astrophysicists have ignored those conclusions and instead bet all their marbles on various gnomes (like magnetic reconnection, black holes, dark matter, dark energy). They've done this because they aren't even open to the notion that proven electromagnetic effects on plasmas (like Birkeland currents, double layers and z-pinches) can explain stellar phenomena like jets, pulsars, solar flares, and galactic rotation curves. Again, you simply prove my point.
What was the point of your staements other then to demonstrate that anyone can easily exceed your apparent ability to research a topic?
I think we just demonstrated whose statements exceed their grasp of the subject. I suggest you wipe egg off face.
