Showing posts with label Fermi. Show all posts
Showing posts with label Fermi. Show all posts

Monday, December 29, 2008

We are , What Stars are Made of?

One thing I can tell you, though, is that most string theorist's suspect that spacetime is a emergent Phenomena in the language of condensed matter physics Edward Witten


Imagine indeed, that such a picture below is an approximate of how our Milky Way Galaxy would appear to the distant observer.

"It is remarkable and ironic that this ferocious "mother of all explosions" involves the lowly neutrino, an elementary particle that seems otherwise to be the most inert and inconspicuous of all particles. Out blast the neutrinos, taking with them all of the outer matter of the star, the new synthesized elements producing a brilliant flash of light of many millions of times brighter than all the stars shining within a single galaxy. The outer shell of the body of the Titan, containing all the elements from hydrogen to iron, is blown into space. A dense, spinning neutron star or perhaps a blackhole, the tiny remnant of the pure neutron core of the Titan with a mass greater than that of our Sun, is left behind."1


M51: Cosmic Whirlpool-Credit: S. Beckwith (STScI) Hubble Heritage Team, (STScI/AURA), ESA, NASA See also:Astronomy Picture of the Day

I was a little perturbed by how scientists themself assuming 5% of the world population would think that such congregations must be "held to themself" and their "sphere of communications." These communications are based on what 20% of the world population currently sees in Internet communications worldwide, would relegate "this figure of 5%" much narrower, to a figure allotted to "internet viability and population reached by those are really see less then 5%." This will change as the Internet viability and population increase. An expanding market then sought by Magazines to take on board "Blogging groups?"

We show that any massive cosmological relic particle with small self-interactions is a super-fluid today, due to the broadening of its wave packet, and lack of any elastic scattering. The WIMP dark matter picture is only consistent its mass M ≫ MPl in order to maintain classicality. The dynamics of a super-fluid are given by the excitation spectrum of bound state quasi-particles, rather than the center of mass motion of constituent particles. If this relic is a fermion with a repulsive interaction mediated by a heavy boson, such as neutrinos interacting via the Z0, the condensate has the same quantum numbers as the vierbein of General Relativity. Because there exists an enhanced global symmetry SO(3, 1)space × SO(3, 1)spin among the fermion’s self-interactions broken only by it’s kinetic term, the long wavelength fluctuation around this condensate is a Goldstone graviton. A gravitational theory exists in the low energy limit of the Standard Model’s Electroweak sector below the weak scale, with a strength that is parametrically similar to GN.2
"

So, your of this group who sought to sell themself to Discovery Magazine, and forfeit(?) all posts and topics as an article of some extrapolation from the ARxiv to the "select only," the few? What was achieved then by the lone scientist, when he sought to exemplify his work on the http://arxiv.org and by chance of discussion sell all their days pondering as work of the future to a magazine?

If you open with a question(?) with something that is very public, you have to consider what market you are extending yourself too, by thinking to ignore public contribution under the guise of this Magazine's presentation of authors. A forum?

A Job possibly? Money to allow them the comforts of spreading good cheer amongst the populations? Imagine, if the population was ever to see "this advance" of bought scientists to mine only what it shall transpire for "new information" for that magazine, by only the inclusion of their trade associates. "Shall you as scientists resist then" such a corporate takeover, and exemplify yourself to denouncing such a corporate structure limited to communications away from the public?

George Musser while scouring the archives and forums for his stories at least sought to contribute to the stories as they unfolded for the public through magazine subscription, then to "mine by incentive, a detach impetus for "new information" about what the stars are made up of. What remnants are left to insight the reader, to think that gravity was formed by evidence of some relics and only held in the scientists mind?

See Also:



1Symmetry by Leon M. Lederman and Christopher T. Hill page 36-Children of the Titans
2Emergent Electroweak Gravity" Bob McElrath CERN theory group, Geneva 23, CH 1211, Switzerland-

Wednesday, August 27, 2008

Glast now Known as "Fermi Gamma-ray Space Telescope"

BEHOLDING beauty with the eye of the mind, he will be enabled to bring forth, not images of beauty, but realities, for he has hold not of an image but of a reality, and bringing forth and nourishing true virtue to become the friend of God and be immortal, if mortal man may. Would that be an ignoble life? Plato


I came across this information after visiting "The Quantum Diaries Survivors," blog by Dorigo. Hmmmm....my comment 23 there should read August 27 as posted and it's reads Aug 28. It would not make sense if this post was made on the 27 and I commented on the 28th, unless one thought I purposely changed the date, which I didn't.:)I wonder if one edits the post from an "admin status" if this is what happens? Anyway, on to the rest of the post here.

Astronomers wrapped the Fermi Gamma-ray Space Telescope's first all-sky map over a sphere to produce this view of the gamma-ray universe. Credit: NASA/DOE/International LAT Team

The article seems most appropriate in context of my other post on "Spherical Cows" this day, as a way in which to interpret calorimetric evidence in the form of motivated Gamma Rays. Dorigo's earlier link on the "calorimetric description in LHC is crucial in my view to what the gamma ray is doing out there in space with regard to the Fermi Gamma-ray Space Telescope.

Logo for the Fermi Gamma-ray Space Telescope. Credit: NASA/Sonoma State University/Aurore Simonnet

NASA's newest observatory, the Gamma-ray Large Area Space Telescope, or GLAST, has begun its mission of exploring the universe in high-energy gamma rays. The spacecraft and its revolutionary instruments passed their orbital checkout with flying colors.

NASA announced August 26 that GLAST has been renamed the Fermi Gamma-ray Space Telescope. The new name honors Prof. Enrico Fermi (1901-1954), a pioneer in high-energy physics.
See:NASA Renames Observatory for Fermi, Reveals Entire Gamma-Ray Sky

This close-up shows the Vela pulsar, which beams radiation every 89 milliseconds as it spins. The pulses are shown slowed by 20 times. Credit: NASA/DOE/International LAT Team

If one is keen enough, one might come across an interesting reference to the "Lighthouse" in this blog. Such rotations and the effect of the jet, has an interesting effect on the eye in analogy when the light shines very brightly for the briefest of seconds. IN this same way, the energy valuations from this brightness, is of some importance I suspect. Not just in blinding oneself when one sees this ray of light, but as it manifests in M87 as well in relation to this measure.

Update:The value of a spherical cow

Friday, December 21, 2007

Bullet Cluster



A purple haze shows dark matter flanking the "Bullet Cluster." Image Credit: X-ray: NASA/CXC/M.Markevitch et al. Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al. Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/D.Clowe et al

The amount of matter, or "mass," in a galaxy is made up mostly of the gas that surrounds it. Stars, planets, moons and other objects count too, but a majority of the mass still comes from the hot, glowing clouds of hydrogen and other gases.

When the Bullet Cluster's galaxies crossed and merged together, their stars easily continued on their way unscathed. This may seem a bit perplexing, because the bright light of stars makes them appear enormous and crowded together. It would be easy to expect them to smash into each other during their cosmic commute. But the truth is, stars are actually spaced widely apart and pass harmlessly like ships on an ocean.

The gas clouds from the merging galaxies, however, found the going much tougher. As the clouds ran together, the rubbing and bumping of their gas molecules caused friction to develop. The friction slowed the clouds down, while the stars they contained kept right on moving. Before long, the galaxies slipped out of the gas clouds and into clear space.

With the galaxies in open space, Chandra scientists found dark matter hiding.


We can make certain conclusion about our universe given some insight into the geometric way our universe as a whole exists now?

Lets first look at what Sean Carroll has to say and then we can go from here.

The Cosmological Constant

Sean M. Carroll
Enrico Fermi Institute and Department of Physics
University of Chicago
5640 S. Ellis Ave.
Chicago, IL 60637, U.S.A.


Abstract:

This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy.


What better way to speak to the content of the universe if you cannot look at the way it is now. It's current "geometric implication" as a result of the parameters we have deduced with WMAP, and resulting information on the content of the dark matter/energy within the universe?

See:The Cosmological Parameters

Saturday, January 20, 2007

Radiactive Decay

Unit Circle


Complex numbers can be identified with points in the Euclidean plane, namely the number a + bi is identified with the point (a, b). Under this identification, the unit circle is a group under multiplication, called the circle group. This group has important applications in mathematics and science. See here.

Just briefly showing containment of "collision process" and for later study. This is how I see this "relation of cosmic particle collisions" to incidents in "high energy collisions processes" and I wonder if this is wrong? Also pointing toward "Neutrino oscillation" as a probabilistic consequence of Quantum mechanics.

To the Substance of this Post

Q9 raised an issue that is of some significance to me because of the way I was "geometrically seeing these collision processes." While, I had not moved my thinking to the human factor in this process, it has in my study raised the question of what effect it has on the human populations on a personal note.

Quasar9:
The general effects of radon to the human body are due to its radioactivity and consequent risk of radiation-induced cancer. As an inert gas, "radon has a low solubility in body fluids which lead to a uniform distribution of the gas throughout the body" (Lindgren, 1989). Radon gas and its solid decay products are carcinogens. Some of the daughter products, especially polonium-218 and 214, from radioactive decay of radon present a radiologic hazard. Depending on the size of the particles, radon decay products can be inhaled into the lung where they undergo further radioactive decay releasing small bursts of energy in the form of alpha particles that can either cause double strand DNA breaks or create free radicals that can also damage the DNA. Also See: Radon





The ABCs - and Xs and Zs - of Radiation

Alpha and beta rays are particles. Gamma rays are electromagnetic radiation, like X-rays but at higher energies. Health physicists worry most about HZE cosmic rays, those with high mass (Z stands for atomic number, which also implies mass) and energy (E). They have two principal sources, the Sun and the galaxy.


Quasar9:
The energy of alpha particles varies, with higher energy alpha particles being emitted from larger nuclei, but most alpha particles have energies of between 3 and 7 MeV. This is a substantial amount of energy for a single particle, but their high mass means alpha particles have a lower speed (with a typical kinetic energy of 5 MeV the speed is 15,000 km/s) than any other common type of radiation (β particles, γ-rays, neutrons etc). Because of their charge and large mass, alpha particles are easily absorbed by materials and can travel only a few centimetres in air. They can be absorbed by tissue paper or the outer layers of human skin (about 40 micrometres, equivalent to a few cells deep) and so are not generally dangerous to life unless the source is ingested or inhaled. Because of this high mass and strong absorption, however, if alpha radiation does enter the body (most often because radioactive material has been inhaled or ingested), it is the most destructive form of ionizing radiation. It is the most strongly ionizing, and with large enough doses can cause any or all of the symptoms of radiation poisoning. It is estimated that chromosome damage from alpha particles is about 100 times greater than that caused by an equivalent amount of other radiation. The alpha emitter polonium-210 is suspected of playing a role in lung and bladder cancer related to tobacco smoking. Also See:Alpha Particles



Low energy alpha particles may be completely stopped by a sheet of paper, beta particles by aluminum shielding. Gamma rays, being very high energy in nature, can only be reduced by much more substantial obstacles, such as a very thick piece of lead.

As for types of radioactive radiation, it was found that an electric or magnetic field could split such emissions into three types of beams. For lack of better terms, the rays were given the alphabetic names alpha, beta, and gamma, names they still hold today. It was immediately obvious from the direction of electromagnetic forces that alpha rays carried a positive charge, beta rays carried a negative charge, and gamma rays were neutral. From the magnitude of deflection, it was also clear that alpha particles were much more massive than beta particles. Passing alpha rays through a thin glass membrane and trapping them in a discharge tube allowed researchers to study the emission spectrum of the resulting gas, and ultimately prove that alpha particles are in fact helium nuclei. Other experiments showed the similarity between beta radiation and cathode rays; they are both streams of electrons, and between gamma radiation and X-rays, which are both high energy electromagnetic radiation.

Although alpha, beta, and gamma are most common, other types of decay were eventually discovered. Shortly after discovery of the neutron in 1932, it was discovered by Enrico Fermi that certain rare decay reactions give rise to neutrons as a decay particle. Isolated proton emission was also eventually observed in some elements. Shortly after the discovery of the positron in cosmic ray products, it was realized that the same process that operates in classical beta decay can also produce positrons (positron emission), analogously to negative electrons. Each of the two types of beta decay acts to move a nucleus toward a ratio of neutrons and protons which has the least energy for the combination. Finally, in a phenomenon called cluster decay, specific combinations of neutrons and protons other than alpha particles were found to occasionally spontaneously be emitted from atoms.

Thursday, April 20, 2006

Purpose of the Compton Lecture Series

April 8The 63rd Compton Lecture Series, 2006 through June 3, 2006, 11:00 a.m.

Sean at cosmic variance point to this series of lectures that are being presented each year and in this series the entitled is called, "String Theory: With a View Towards Reality" which will be presented by Nicholas Halmagyi, McCormick Fellow, Enrico Fermi Institute.

Dear Friends of the Enrico Fermi Institute:

We cordially invite you to join us for the next series of the Arthur H. Compton Lectures. The Lectures are intended for the general public, friends of the Enrico Fermi Institute, members of the University community, and interested citizens of the Chicago area. They provide a descriptive account of some of the frontiers of present-day science. We don’t expect you to have a formal background in mathematics or science, but hope to appeal to your curiosity and to share with you some of the excitement of modern scientific research.

String Theory is an attempt to describe all particles by multi-dimensional objects, such as strings and membranes. These objects propagate in a ten dimensional universe of which four dimensions are visible to us. This rather outlandish conjecture has led a large community of theoretical physicists to hope for a unification of particle physics and Einstein's general relativity.

The rather serious caveat is the difficulty in providing predictions which can be experimentally verified since the physical manifestation of the string hypothesis will be most obvious only at energy scales which far exceed our current experiments.

In these lectures Dr. Nicholas Halmagyi will explain the humble beginnings of String Theory and will detail the staircase of energy scales which climb up to quantum gravity and string theory. No scientific background is required.

Just bring your curiosity. We hope you can join us for the first lecture on Saturday, April 8, 2006 at 11:00 AM in Room 106 of the Kersten Physics Teaching Center, 5720 South Ellis Avenue. Enter through the door at the southeast corner. The series will run from April 8, 2006 through June 3, 2006.

There will be NO lecture on Saturday, May 27th and the Compton Lecture Luncheon will be held on June 3rd.

Sincerely,

James E. Pilcher Director


There is a list of Present and Recent Abstracts, some mentioned in the article presented by Sean Carroll, and many others on the Compton lecture presentation itself.

For me it will be a interesting set of lectures, as I have watched this development for the last couple of years trying to piece togehter the essence of this perspective, about the way in whch one could now percieve a model used to help grow towards a dimensional expression of particle physics in high energy areas.

I would not like one to think that I am without purpose in my attachments to Cosmic varaince, and to those there in cosmic variance without understanding that some in their respective trades, are just as green(e) when it comes to applying their tools of the trade with string theory, while working their specific areas.



Feynman's Rainbow, by Leonard Mlodinow Warner Books 2003

Euclid's Window: The Story of Geometry from Parallel Lines to Hyperspace by Leonard Mlodinow FreePress 2001

Also too, having watched a previous writer like Leonard Mlodinow, the quest to pursue science as well as develop the "path with a heart," to me exemplfies the struggle of some science people to find this part of themself. Meanings, to continue in the directions they do. While it might have been a aimless struggle( the recorded history) that apparent at one time as the story unfolds, were the glimpses into other times of people, as the greater teachers of science, like Feynman or Gellman, these insights into their lives present some of the essesnce of what has to be found as motivations needed to develope awareness not only for themself, but in the struggle to move society along with them.

Friday, April 08, 2005

Pierre Auger Observatory


In his excellent paper, Louis LePrince-Ringuet, citing a remark of Powell's at the Conference of Bagneres-de-Bigorre in 1953, declared that from that date on, particle accelerators took the place of cosmic rays, which more or less faded into the background. And yet, even today accelerators have not caught up with cosmic rays.


Pierre Auger on Cosmic Rays


"For in 1938, I showed the presence in primary cosmic rays of particles of a million Gigavolts -- a million times more energetic than accelerators of that day could produce. Even now, when accelerators have far surpassed the Gigavolt mark, they still have not attained the energy of 1020eV, the highest observed energy for cosmic rays. Thus, cosmic rays have not been dethroned as far as energy goes, and the study of cosmic rays has a bright future, if only to learn where these particles come from and how they are accelerated. You know that Fermi made a very interesting proposal that particles are progressively accelerated by bouncing off moving magnetic fields, gaining a little energy each time. In this way, given a certain number of "kicks," one could perhaps account for particles of 1018 -- 1020 electron volts. As yet, however, we have no good theory to explain the production of the very-high-energy particles that make the air showers that my students and I discovered in 1938 at Jean Perrin's laboratory on a ridge of the Jungfrau."
-- Pierre Auger, Journal de Physique, 43, 12, 1982



On the vast plain known as Pampa Amarilla in western Argentina, a new window on the universe is taking shape. There the Pierre Auger Cosmic Ray Observatory has begun its study of the universe's highest energy particles. These rare messengers should tell an important story about how they originate. Experiments have so far failed to decipher their message, and their existence has become a profound puzzle. The Auger Observatory is attacking this enigma of the highest energy cosmic rays with unprecedented collecting power and experimental controls.




John Ellis:
The next step will again be taken in Japan, with the new J-PARC accelerator starting in 2009 to send neutrinos almost 300 km, again to the Super-Kamiokande experiment, to probe the third neutrino mixing angle that has not yet been detected in either atmospheric or solar neutrino experiments. This may also be probed in a new experiment being proposed for the Fermilab NuMI beam. One of the ideas proposed at CERN is to probe this angle with an underwater experiment moored in the Gulf of Taranto off the coast of Italy, viewing neutrinos in a modified version of CERN's current Gran Sasso beam.



Aussois, Savoie, France
After "Neutrino 2004" the convergence of results from atmospheric, solar, reactor and accelerator experiments confirms the massive neutrino and gives the first opportunity to test physics beyond the Standard Model. The neutrino oscillations picture is still missing 3 fundamental ingredients: the mixing angle θ13, the mass pattern and the CP phase δ.

Future neutrino beams of conventional and novel design aimed at a megaton type detector could give access to these parameters. Such a detector would also be the next generation facility for proton decay searches and an invaluable supernovae neutrino observatory.




To understand the Higgs mechanism, imagine that a room full of physicists chattering quietly is like space filled with the Higgs field ...


So who is the professor that crosses the room? It is Albert Einstein:)


Any such Blackhole would quickly decay into a shower of Hawking radiation (mainly into standard model particles on our brane, rather than into grvaitons into the bulk). This shower of radiation would be quite different from showers arising from, say, the collsion of cosmic-ray proton with a atmospheric atomic nucleus. Gravity is "flavor blind," so when a microscopic blackhole evaporates it produces all the Standard Model particles with equal probability. Once one accounts for spin and color, it turns out that particles produced when a blackhole decays are about 72 percent quarks and Gluons, 18 percent leptons, and the rest are bosons. Such a distinctive shower of particles would be hard to miss. So there is the possibility that the Pierre Auger Observatory will detect blackholes.
Page 262, Out of this World, by Stephen Webb


Two of the tanks in the Pierre Auger Observatory are shown. They each hold 12 tonnes of clean water and are viewed by 3 X 8” diameter photomultipliers. The electronics for recording and data transmission are powered by solar cells. These tanks are placed close together so that cross-tank measurements of densities and arrival times can be made but the nearest neighbour for all other tanks is 1.5 km away. In this way 3000 km2 can be covered with only 1600 detectors.

Sunday, January 30, 2005

Civilizations Within the Cosmo

In the recent article ‘Conflict between anthropic reasoning and observation’ (gr-qc/0303070) Ken D. Olum, using some inflation-based ideas and the anthropic premise that we should be typical among all intelligent observers in the Universe, arrives at the puzzling conclusion that ‘we should find ourselves in a large civilization (of galactic size) where most observers should be, while in fact we do not’. In this note we discuss the intriguing possibility whether we could be in fact immersed in a large civilization without being aware of it. Our conclusion is that this possibility cannot be ruled out provided two conditions are met, that we call the Subanthropic Principle and the Undetectability Conjecture. The Subanthropic Principle states that we are not typical among the intelligent observers from the Universe. Typical civilizations of typical galaxies would be hundreds of thousands, or millions, of years more evolved than ours and, consequently, typical intelligent observers would be orders of magnitude more intelligent than us. The Undetectability Conjecture states that, generically, all advanced civilizations camouflage their planets for security reasons, so that no signal of civilization can be detected by external observers, who would only obtain distorted data for disuasion purposes. These conditions predict also a low probability of success for the SETI project. We also argue that it is brane worlds, and not inflation, what dramatically could aggravate the ‘missing-alien’ problem pointed out first in the fifties by Enrico Fermi. August 2003



I know some people have to contend with the racial slurs of Martian ancestory, but really:)We are not alone?

In such a delightful mood, what has string theory spawned of itself? IMagine, the mathematics that could arise?



So lets say we are in the moment.:)Lets say, that the very existance of the dimenisonal attributes from our early universe arises from the planck epoch to now, are right here as of this moment. This would mean, that time, as measured, would speak to this dimensional significance, and would reveal that the minds capabilities are far removed from such emotive sufferings of a emotive being from Mars. The intellect is a finer color of yellow:)

String Theory, Universal Mind, and the Paranormal *



Brian D. Josephson
Department of Physics, University of Cambridge


A model consistent with string theory is proposed for so-called paranormal phenomena such as extra-sensory perception (ESP). Our mathematical skills are assumed to derive from a special ‘mental vacuum state’, whose origin is explained on the basis of anthropic and biological arguments, taking into account the need for the informational processes associated with such a state to be of a life-supporting character. ESP is then explained in terms of shared ‘thought bubbles’ generated by the participants out of the mental vacuum state. The paper concludes with a critique of arguments sometimes made claiming to ‘rule out’ the possible existence of paranormal phenomena.


So do you See how the math of this geometry/topology must arise?

So you thought backtracking and th eissues therein were finished?. Well I could help but find that those who were disseting about Josephson, were also complaining about the same thing? You just can't win.

See:

  • ArchveFreedom