cosmic webとMedia Point

テーマ：太陽系／宇宙

研究資料として貼り付けさせていただく。
cosmic web、「宇宙の蜘蛛の巣」とは、Media Pointと関係すると思う。Media Pointでは、超越的エネルギーと連続的エネルギー、超越的光と連続的光が即非態にある。思うに、Media Pointを時間の方向に移動させていくと、cosmic webになるのかもしれない。とまれ、検討課題にしたい。

p.s.　結局、ダークマター（暗黒物質）とは何か、ということになると思う。ダークエネルギーは、Media Pointにおける超越的エネルギーで簡単に説明できるが、ダークマターは、プラトニック・シナジー理論からどう説明できるだろうか。
　これは、ダークエネルギーよりも、精妙な考え方が必要であるようだ。先に私は、Media Pointの実軸点について言及した。それは、デリダの痕跡が生じる場所として考えたのであり、また、構造の原点であると見たのである。それは、同一性の原型である。どうも、これが、ダークマター（暗黒物質）か、それに関わるのではないだろうか。
　Media Pointの実軸点から、直接に、同一性現象・物質現象が発生するのであり、また、これは、物質の原点であり、いわば、プロト・マター（原物質）である。つまり、一種の空となっているのである。これが、cosmic webの暗い穴だと思えるのである。今は、ここで留める。

p.p.s.　二番目の資料の最初の画像において、脳神経のシナプスに見るものがあるが、それは、メディア共鳴Media Resonanceで説明できるかもしれない。
　残る大きな問題は、webないしは繊維filamentである。これをどう説明するのかである。いわば、天の羽衣である。天衣である。思うに、これも、メディア共鳴Media Resonanceで説明できるのではないだろうか。Media Pointの共鳴（共振）によって、エネルギーが伝達されるのである。これは、超越的エネルギーももつから、超越的共鳴様態ともなると考えられる。思うに、単純化していうと、Media Pointをダークマターと考え、メディア共鳴様態をcosmic webとなるのではないだろうか。
　



Cosmic web to be unravelled

Last Updated: 4:01pm GMT 04/01/2008

Forget about the world wide web. The cosmic web is much bigger, stranger and more interesting, says Roger Highfield

Plans to explore and understand the cosmic web - one of the biggest and most mysterious features of the universe - have been unveiled by scientists.

View of the expanding universe illustrating the evolving cosmic web
View of the expanding universe illustrating the evolving cosmic web


The sky appears as a vast darkness with spots of lights and clouds of dust, but astronomers have discovered that the stars and galaxies we can see are embedded in streams of light stretching between inky voids, forming a wispy invisible structure called "the cosmic web."

This "framework" for the universe contains visible matter that we are all familiar with but 80 per cent of it consists of dark matter, the matter that astronomers only know to be there because of its gravitational tug on nearby objects.

The structure, and how it glues the cosmos together, poses one of the next big challenges for astronomy. Scientists believe that a quantum leap in computing power and the development of powerful new telescopes will soon unravel the secrets of the web, which reaches right into our own cosmic back yard.

One puzzle, says Farbrizo Nicastro of the Harvard-Smithsonian Centre for Astrophysics and colleagues, is that predictions about the makeup of ordinary matter in the web are wrong.

The web is as big as the universe itself, measuring some 14 billion light years across, adds Claude-André Faucher-Giguère of Harvard University, another of the groups discussing the web in the journal Science.

Although the details are being actively investigated, its birth is one of the best understood results of cosmology. The cosmic web grew out of tiny fluctuations imprinted in the early universe shortly after the Big Bang, which eventually condensed into the massive structures we see now.

To date, the cosmic web has been largely probed in visible light. New experiments and observatories are now being planned or entering service to probe the cosmic web at new wavelengths, from radio to x-rays, passing by the infrared and ultraviolet bands.

"These new wavelengths will open new windows to the cosmic web that are poised to lead to many new discoveries and also to occupy theoretical astrophysicists as they work to predict and understand the features revealed by these new pictures of the universe," Faucher-Giguère says.

Galaxies form in the web's smaller knots, and scientists are also struggling to determine how they swirl into existence. Rodrigo Ibata of the Observatoire Astronomique de Strasbourg in Strasbourg, France and Geraint Lewis of the University of Sydney explain that galaxies are distributed along the tendrils of the cosmic web and the pattern can only be explained by large amounts of connective dark matter.

They hope able to reunite the long-dispersed stars from ancient accretion events, completely dissecting the Milky Way and laying bare its history and how it was influenced by the local cosmic web.

Even though the exact nature of the cosmic web remains unknown, astronomers are able to produce detailed maps of the cosmos, showing its location in relation to the ordinary matter that we can see in telescopes.

One method takes advantage of gravitational lensing - when light from a distant galaxy is bent by the gravity of matter in front of it. Such gravitational lenses provide a direct probe of where dark matter lies. Last year, Richard Massey at the California Institute of Technology in Pasadena, used images of half a million galaxies from Nasa's Hubble Space Telescope to crudely map a bit of the 3D web.

This work highlights how the galaxies we see lie within larger dark matter clumps, but that these clumps are connected by "cosmic filaments" - bridges of dark matter that connect the clusters and that make up a web that pervades the universe. Much bigger surveys are now planned of the "cosmos incognita."

Overall, universe contains ordinary visible matter (5 per cent), dark matter (25 per cent), and dark energy (70 rep cent), a source of antigravity that pervades everything, affecting the evolution of the web from near to far, from the present into the most distant past.

http://www.telegraph.co.uk/earth/main.jhtml
;jsessionid=DH0NF3ZZVOVEXQFIQMGSFF4AVCBQWI
V0?view=DETAILS&grid=&xml=/earth/2008/
01/04/scicosmic104.xml

An international team of astronomers using NASA 's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe.
HubbleSite - NewsCenter - Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D (01/07/2007) - Introduction

http://b.hatena.ne.jp/entry/3656455


Early Universe Was Spongy, Like Brain

Sponge Filaments
THEORY: Computer model of the early universe. Gravity arranges matter in thin filaments. High-density regions (yellow) undergo collapse and ignite bursts of star formation. These proto-galaxies stream along the filaments (red shows medium density) and meet at nodes, causing a buildup of galaxies. Low-density areas are blue.
Sponge Animation
OBSERVATION: Eight distant infant galaxies -- essentially giant globs of hydrogen with a few hot young stars -- lie inside a thin filament, visualized with a computer overlay. The hot stars make the hydrogen glow. Other objects in the image are nearer galaxies or stars.
The acute Watson might have argued, however, that it's more like a spider web. And if word of Holmes' theory got around, other big thinkers might have insisted, "No, it's spongy, just like your brain!"

They'd all have been arguing the same cosmic case: That the early universe contained a series of threads and clumps, not unlike a spider web dappled with water droplets, and that this structure set the stage for the growth of galaxies and galaxy clusters seen today.

Of course, like a good murder mystery, this theory began without much to go on. A small bit of circumstantial evidence here. A wild hunch there.

Now a group of European researchers has done some fine long-distance sleuthing, looking way back in time to when the universe was just 15 percent of its current age, to uncover some vital clues in the case.

Using the European Southern Observatory's Very Large Telescope, they have spotted a string of dense clumps of hydrogen, which glow because inside them a few hot young stars are forming. The clumps are galaxies-to-be, or protogalaxies, the researchers say. And they were found to lie within a tubular region of space -- a filament -- supporting a popular theory of the cosmic web, involving filaments stuffed with protogalaxies.

"This discovery certainly bolsters the concept of the cosmic web," said Lev Kofman, professor of the Canadian Institute for Theoretical Astrophysics.

Kofman, who was not involved in the study, added that more research would be needed before alternative models of galaxy formation could be ruled out.

Fatal attraction

The most widely accepted models of the early universe now hinge on a discovery from the early 1990s. A satellite called the Cosmic Background Explorer (COBE) was observing a pervasive feature of the universe called cosmic microwave background, or CMB, which was emitted shortly after the Big Bang.

Since its discovery in 1965, the CMB had appeared to be a uniform temperature in every direction of space. But COBE found tiny variations, lumps and bumps that researchers now believe were seeds of structure. Computer models see these variations as leading to the first large-scale architectural components of the universe -- long filaments connected at nodes. The spider web.

Clumps of hydrogen -- think of them as the drops on the spider web -- developed along these filaments. Each would have had mass, gravity and some random velocity, the computer modelers say. And they would have streamed along the filaments toward the nodes.

"Sometimes this random motion will cause two protogalaxies to pass so close to each other that they will experience fatal attraction," explained ESO researcher Palle Møller. "They will fall into each other."

Repeating the process many times, larger and larger galaxies would have formed. Over billions of years, the filaments were replaced by large clusters of galaxies connected by bridges -- the remains of the largest of the original filaments. Galactic collisions continue today.

Were Sherlock Holmes a cosmologist, he might have said, "It's filamentary, my dear Watson."
http://blog.goo.ne.jp/trova/e/
292a186e514866ac856b077170c1413a
History of Science

暗黒物質の3次元分布を測定

暗黒物質は目に見えないが、銀河回転速度や銀河団構造の測定から、銀河内及び銀河間に大量に存在していると考えられ、既にいくつかの観測で、その存在が確認されている。

しかし、暗黒物質がどれだけ存在しているのか、どのように分布しているのか、銀河の進化・成長にどのような影響を与えているのか、天文学の大きな謎だった。

http://www.sorae.jp/031001/1656.html


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