Talk:WMAP cold spot

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[edit] Article for common folks

I was reading this article on Yahoo about the cold spot and what the Spanish and British astronomers suggested. I understood it all. Then I come to Wikipedia and all I see is a bunch of formulas, without explaining their context, added to the article. Excuse me, but what do those formulas mean? If you must add them, then at least add them later into the article. First, you should take the time to explain the phenomenon to the common folks, because we're not all scientist here. --Thus Spake Anittas 16:35, 27 October 2007 (UTC)

[edit] Is the Cosmological Principle still valid

With such a big hole in the sky, is the cosmological principle still valid? Is the universe still considered homogemeous and isotropic? If this assumtion is false, is the Big bang thoery false as well? —Preceding unsigned comment added by 202.42.202.67 (talk) 06:43, 30 November 2007 (UTC)

[edit] Positional contradiction

'Position' says: Southern hemisphere of the Celestial sphere.

Yet, the 'Parallel universe' Attempted Explanation also says: "If the parallel universe theory is true there will be a similar void in the Southern hemisphere of the Celestial sphere."

Well, that's handy. It already exists!

But then, I read the source for the 'Parallel Universe' item. It says that the WMAP cold spot exists in the Northern Hemisphere. Hum. Source: http://www.theblogofscience.com/evidence-for-a-parallel-universe/

Supposedly Revision 179775771 had it correct, per 'The Blog of Science', that the WMAP cold spot exists in the Northern Hemisphere http://en.wikipedia.org/w/index.php?title=WMAP_cold_spot&oldid=179775771

Revision 181053980 changed the text to read WMAP existed in the Southern Hemisphere http://en.wikipedia.org/w/index.php?title=WMAP_cold_spot&oldid=181053980

For now, I'm not going to touch the article because I'm not cosmologist. I may come back in several days and change if I get the time to read through some of the sources. Washii (talk) 06:33, 14 February 2008 (UTC)

I was just about to comment on the same thing. It's a rather glaring contradiction. RobertM525 (talk) 10:57, 15 February 2008 (UTC)
I have edited the article to 'Northern hemisphere' from 'Southern hemisphere' Washii (talk) 07:05, 27 February 2008 (UTC)

[edit] Professor Mersini Radio Broadcast

Here is Dr Mersini's second paper which predicts the second void of one degree http://arxiv.org/abs/hep-th/0612142. Notpayingthepsychiatrist (talk) 16:21, 22 March 2008 (UTC). In that paper the writers refererence this paper as indicating the small void in the southern hemisphere http://arxiv.org/abs/astro-ph/0602478. Notpayingthepsychiatrist (talk) 16:36, 22 March 2008 (UTC) This paper attributes assymetry, planarity and alignment in CMB power between hemispheres as explained by assymetry of voids between hemispheres which seems to be were the prediction of a small void in the opposite hemisphere comes from. Notpayingthepsychiatrist (talk) 05:04, 23 March 2008 (UTC)

It seems the large void near the horizon of the universe verified predictions of the string theory landscape high scale inflation birth of the universe where, I think, long waveforms of different universes entangled and decohered http://wunc.org/tsot/archive/?b_start:int=42 (understandable radio broadcast as at 23-03-08) http://arxiv.org/abs/hep-th/0612142, radio broadcast archived as at 07-04-08 http://wunc.org/tsot/archive/sot0221b08.mp3/view?searchterm=mersini and the small void is simply to understand the CMB power. Notpayingthepsychiatrist (talk) 08:10, 23 March 2008 (UTC)

As yet the theory has not been adopted by high impact magazines like Science, Nature or PNAS. Notpayingthepsychiatrist (talk) 19:49, 29 March 2008 (UTC) The significance of Laura Menisi-Haughton's prediction can't be understated, the cold spot could have been dark matter. Notpayingthepsychiatrist (talk) 06:58, 5 April 2008 (UTC)

But the Wikipedia article doesn't give any competing theory Notpayingthepsychiatrist (talk) 10:47, 31 March 2008 (UTC). A competing theory was proposed on 5 March, where the cold spot is regarded as a gateway to extra dimensions: http://209.85.173.104/search?q=cache:2IABbS94HuEJ:export.arxiv.org/abs/0803.0694+arxiv+cold+spot&hl=en&ct=clnk&cd=5&gl=au Notpayingthepsychiatrist (talk) 23:46, 6 April 2008 (UTC)

At http://209.85.173.104/search?q=cache:ph3XIuba9Q8J:www.hr-online.de/servlet/de.hr.cms.servlet.File/08-022.pdf%3Fws%3Dhrmysql%26blobId%3D6423810%26id%3D33781304+susskind+mersini+void&hl=en&ct=clnk&cd=7&gl=au three physicists are commended for using mathematical proofs. This is a translation from the German using AltaVista Babel Fish: Are there infinitely many beside our universe still different university verses, possibly? The answers to this question are speculative - and most disputed. There are proofs none. But one must admit one: Researchers such as Alex Vilenkin, Laura Mersini and Leonard Susskind do not establish her theory buildings PAGE 10 page 10 by any means on that to nothing. They quite move with their computations on the ways its that is mathematically possible. —Preceding unsigned comment added by Notpayingthepsychiatrist (talk • contribs) 09:14, 6 April 2008 (UTC)


This report dated December says it is actually a group of extrema and not one, prefers not to use wavelet analysis as a measure of Gausinnity and also examines whether there are other cold spots. http://front.math.ucdavis.edu/0712.1118. (They conclude - using their different technique - that: "clustering of the extrema of the ILC III and WCM signals is a typical feature of the morphology,..." (p9) Notpayingthepsychiatrist (talk) 00:52, 7 April 2008 (UTC)

Here are the title of the article, it's authors and their positions:

Title: The mystery of the WMAP cold spot Authors: Pavel D. Naselsky (1), Per Rex Christensen (1), Peter Coles (2), Oleg Verkhodanov (3), Dmitry Novikov (4,5), Jaiseung Kim (1) ((1) Niels Bohr Institute, Copenhagen, Denmark; (2) School of Physics and Astronomy, Cardiff University, Wales, United Kingdom; (3) Special astrophysical observatory, Nizhnij Arkhyz, Russia; (4) Imperial College, London, United Kingdom; (5) AstroSpace Center of Lebedev Physical Institute, Moscow, Russia) —Preceding unsigned comment added by Notpayingthepsychiatrist (talk • contribs) 03:39, 8 April 2008 (UTC)

However, does this refute figure 5 in http://arxiv.org/abs/0704.0908 (which is quoted in the Wikipedia article itself)? Notpayingthepsychiatrist (talk) 04:10, 8 April 2008 (UTC). This study was designed, presumably, on radio waves, while the other one mentioned by Wikipedia on background temperature.Notpayingthepsychiatrist (talk) 05:17, 8 April 2008 (UTC)

However, the wikipedia article is not entirely easy to follow, as the article on detection by radio telescope proposes "modest redshift" objects - implying they are further away? - eliminating the need for Gaussinity. But isn't it true that the smaller the redshift, the slower and closer the galaxy? I now understand it is the integrated Sachs-Wolfe effect (of a hot spot before a void in the line of sight), which is why the article mentions modest red shifts, but doesn't change the size of the void. Notpayingthepsychiatrist (talk) 11:21, 8 April 2008 (UTC)