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#401 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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How about this?
http://www.physorg.com/news76314500.html "September 01, 2006, ... snip ... In a finding sure to cause controversy, scientists at The University of Alabama in Huntsville (UAH) found a lack of evidence of shadows from "nearby" clusters of galaxies using new, highly accurate measurements of the cosmic microwave background. A team of UAH scientists led by Dr. Richard Lieu, a professor of physics, used data from NASA's Wilkinson Microwave Anisotropy Probe (WMAP) to scan the cosmic microwave background for shadows caused by 31 clusters of galaxies. "These shadows are a well-known thing that has been predicted for years," said Lieu. ... snip ... If the standard Big Bang theory of the universe is accurate and the background microwave radiation came to Earth from the furthest edges of the universe, then massive X-ray emitting clusters of galaxies nearest our own Milky Way galaxy should all cast shadows on the microwave background. ... snip ... Either it (the microwave background) isn't coming from behind the clusters, which means the Big Bang is blown away, or ... there is something else going on," said Lieu." http://www.moondaily.com/reports/Big..._Test_999.html "The apparent absence of shadows where shadows were expected to be is raising new questions about the faint glow of microwave radiation once hailed as proof that the universe was created by a "Big Bang." http://www.centauri-dreams.org/?p=800 "Where Have All the Shadows Gone?" http://www.space.com/scienceastronom...ry_monday.html "A study of nearby galaxy clusters has failed to detect distortions in the ancient microwave radiation many scientists have linked to the creation of our universe." http://www.thisisby.us/index.php/con...f_the_big_bang "the energy now being received from the CMB must have traveled across the whole of the cosmos to reach this location at this time. Because of this, there should be evidence imprinted on the CMB showing a sort of record of its travels. Studies conducted by Prof. Richard Lieu at the University of Alabama used NASA's own Wilkonson Microwave Anisotropy Probe (WMAP) to look for evidence of this passage. The First study, as recounted by Space Daily in 2005, looked for evidence of gravitational lensing in the CMB. Gravitational lensing is an effect of the gravitational attraction of massive clusters of galaxies. When radiation passes through such a powerful field, it is magnified, like being seen through a lens. This would leave a clear image on the CMB in the areas that have been so magnified. No evidence of the effect was found, so the CMB could not have originated from beyond the galaxy clusters; compliance with the requirements of the physical laws is not optional. Another study by Prof. Lieu's team, published in the Astrophysical Journal in 2006, looked for evidence of a shadow' effect, called the Sunyaev-Zel'dovich effect, in the CMB. This is another requirement needed to prove that the CMB came from beyond nearby galaxy clusters. The effect manifests in a fashion similar to a silhouette. If a light source is behind an object, relative to an observer, then that object should cast a shadow forward onto the observer. This effect was not found in the CMB either."
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#402 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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Speaking of rotation curves ...
http://space.newscientist.com/articl...tronomers.html "Galaxy without dark matter puzzles astronomers, February 2008 ... snip ... In the spiral galaxy NGC 4736, however, the rotation slows down as you move farther out from the crowded inner reaches of the galaxy. At first glance, that declining rotation curve is just what you would expect if there is no extended halo of dark matter, and no modification to gravity. ... snip ... According to their combined mathematical model, ordinary luminous stars and gas can indeed account for all the mass in NGC 4736. ... snip ... "If this paper is correct, then this galaxy contains very little or no dark matter," says astrophysicist Jürg Diemand of the University of California, Santa Cruz, US, who is not a member of the team. "That is surprising.""
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#403 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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#404 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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Then it is curious why so many of them use the word gas when talking about plasma. It is curious why so many ignore the various electromagetic related phenomena that have been mentioned with regards to plasmas when looking for explanations of phenomena. Why are terms like "plasma filaments", "Birkeland current", "double layer", "exploding double layer", and "z-pinch" so rarely seen in articles and papers written by mainstream astrophysicists and physicists ... especially when the astronomical objects being described sound just like manifestations of those phenomena?
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#405 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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Gee David, seems to me I've been told recently that even a miniscule amount of particles, if they were all the same charge, would blow the sun up.
![]() Is it? Afterall, mainstream astrophysicists are talking all the time about open field lines. So there must be monopoles all over the universe. ![]() Gee David, I thought you'd figure out that the particles in the plasmoid are really hot and moving very fast.
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#406 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#407 |
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Philosopher
Join Date: Oct 2007
Location: Nova Roma
Posts: 8,419
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Actually, we already know a mechanism by which dark matter can be stripped away from most of the luminous matter. When two galaxies or clusters collide with sufficient velocity, the dark matter and stars pass through each other, leaving behind most of the gas (and therefore most of the visible matter). That's what's we're seeing happen with the bullet cluster right now. If that remaining gas is star forming, the resulting galaxy will be without DM.
Given that we've seen one collision taking place "now", there are almost certainly several remnants of those collisions around from past collisions. This may well be one such, and (while it's interesting and noteworthy) I don't find it at all surprising. And the observation of such a galaxy is yet another nail in the coffin of alternative gravity theories like MOND, which cannot possibly account for such a thing. |
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#408 |
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Banned
Join Date: Dec 2007
Posts: 5,241
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#409 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#410 |
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Philosopher
Join Date: Oct 2007
Location: Nova Roma
Posts: 8,419
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#411 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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They were even more "surprised" when computer models using Big Bang cosmology produced filaments.
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#412 |
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Philosopher
Join Date: Oct 2007
Location: Nova Roma
Posts: 8,419
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I don't know what people thought in the past before these were possible, but I've seen many simulations of structure formation by gravitational collapse, and they all form long thread-like structures. Note that dark matter is absolutely essential in those simulations (in fact that's really what they are simulating).
The results match observations quite well. |
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#413 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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I agree. Maybe BeAChooser is using the English "surprised" as in "this is an interesting thing that just happened - I am surprised" rather than the scientific "surprised", e.g. "we predict not-X and were surprised to find X". This does show BAC's lack of knowledge of the current cosmology work.
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#414 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#415 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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By the way:
http://www.plasma-universe.com/index...laxy_formation "Galaxy formation in the Plasma Universe is modeled as two adjacent interacting Birkeland filaments. The simulation produces a flat rotation curve (ie the galaxy appears to rotate as a solid disk), but no hypothetical invisible dark matter is needed, as required by the convention model of galaxy formation. The simulations derive from the work of Winston H. Bostick who obtained similar results from interacting plasmoids.[1] [2]" |
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#416 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#417 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#418 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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#419 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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#420 |
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Banned
Join Date: Dec 2007
Posts: 5,241
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Plasma scaling Plasmas can create very similar structers, from microscopic to galactic size, many plasma experiments have mimiced the shape structure and form of galaxies using the EM forces the plasma contains. |
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#421 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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Note the word "mimicked". I can mimick a galaxy in my bath by rotating water around therefore the galaxy is controlled by the forces in water
!The next step an any simulation is show that it happens in the real world. Where are your observations of galactic-sized plasmoids? |
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#422 |
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Banned
Join Date: Dec 2007
Posts: 5,241
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You need to stop getting your analogies from Baut. No-one is claiming any similarities between a vortex effect in a bath and galaxies . What a stupid analogy. Plasma experiments can be applied to the cosmos as the cosmos is 99.999% plasma. Vortex's formed in baths are not occuring in plasma (although they do actually arrise from weak EM effects anyway)
Quote:
When you look at a galaxy. That is a direct observation of what has been produced in plasma experiments, which I will post here soon |
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#423 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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Computer models that contained "something" called dark matter that was distributed in such a way that it would form filaments?
And you know what else is interesting about articles on this topic and the computer model? They don't mention plasma and the model doesn't include electromagnetic effects. They modeled neutral gas and used methods more suited to studying our atmosphere and water. They don't seem to recognize that plasmas behave very differently than neutral gas in the presence of electromagnetic fields ... which we know exist out there. Notice also that they don't seem to recognize that electromagnetic effects naturally tend to organize plasmas into long filaments. You suppose they might be missing the obvious? GIGO? ![]() By the way, you should know that they haven't yet detected the type of filaments their model predicts. Time will tell.
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#424 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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#425 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#426 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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#427 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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#428 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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The size of the event horizon of a black hole is also called the Schwartzchild radius, and it's equal to... R = 2GM / c2 where G is the universal gravitational constant, M is the mass of the black hole (in kg), and c is the speed of light. So a billion-sun mass (which is M = 109 * 2x1030 kg) should come out to... R = 2 * 6.67x10-11 Nm2/kg2 * 109 * 2x1030 kg / (3x108 m/sec)2 R = 2.96x1012 meters |
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#429 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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Actually, you can't, since your bath water isn't a plasma under the influence of electromagnetic effects.
But you do demonstrate the selective blindness of mainstream supporters ... treating the galaxy once again as if it were a neutral fluid. Your motto is ANYTHING but electricity. And the latest gnome is dark energy stars. Ever hear of them, RC?
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#430 |
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Graduate Poster
Join Date: Nov 2007
Posts: 1,560
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BeAChooser - stop relying on overblown media reports and try looking through the literature. From Dunkley et al. (2008)'s weak lensing section:
Quote:
As for the SZ effect. It's tricky to detect, but it is detectable. It's been seen for several Abell clusters I believe. It's not missing. I'll let you find it yourself, it's not hard. |
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#431 |
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Banned
Join Date: Dec 2007
Posts: 5,241
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Well you might just have to eat your hat tomorrow, we'll just have to see wont we. So are you saying you think there is no such material? Its going to take a while to assemble the material, and that is not hand waving, it called telling you what I plan to do. Goodnight. |
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#432 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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#433 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#434 |
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Banned
Join Date: Dec 2007
Posts: 5,241
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#435 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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The thing that's so interesting is that you've spent so many posts talking up your EU-PU woo-nonsense, screwing up physics all along the way, and when a group of us demand a simple statement outlining a prediction or a test of your pet "theory"... ... suddenly you cannot post something. You have to go "look it up" or "dig through the material". It's now going to "take some time." Gee whiz, given all the things you've been saying, one would think that you'd have had the info at your fingertips the entire time... ![]() Fine, post something else. I'm fairly certain that it'll get torn to shreds in short order. That's my prediction. |
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#436 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#437 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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#438 |
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Intellectual Gladiator
Join Date: Jan 2006
Location: In the midst of a vast, beautiful & uncaring universe
Posts: 14,175
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No dice pal. It was clearly outlined by both me and many others... that you are erroneously assuming only baryonic matter in your calculation. In fact, such baryonic matter makes up only about 4% of the matter & energy that we observe in the universe. Sigh... for the lurkers, it was all posted here in post #149 by Reality Check and in post #158 by me. It was at that point that all you woo-niacs decided to start butchering the physics of black holes. Sorry, but no cigar. Try recycling some more garbage... |
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#439 |
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Banned
Join Date: Jun 2007
Posts: 11,716
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#440 |
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Penultimate Amazing
Join Date: Mar 2008
Location: New Zealand
Posts: 10,818
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My original sarcastic and humorous statement was:
"I can mimic a galaxy in my bath by rotating water around therefore the galaxy is controlled by the forces in water". ![]() ![]() Compare this to Zeuzzz's claim which was basically: We can mimic a galaxy in a plasma therefore the galaxy is controlled by the forces in plasma. And he is serious! My motto is "anything that is supported by lots and lots of evidence". Is your motto "Nothing but electricity even with the lack of a large body of evidence"? |
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