Speaking of, you’ll be interesting in this debate that I just came across concerning the possible importance of antimatter http://www.scientificconcerns.com/Forums/viewtopic.php?f=32&t=776

Authors: G. Testera, A.S. Belov, G. Bonomi, I. Boscolo, N. Brambilla, R. S. Brusa, V.M. Byakov, L. Cabaret, C. Canali, C. Carraro, F. Castelli, S. Cialdi, M. de Combarieu, D. Comparat, G. Consolati, N. Djourelov, M. Doser, G. Drobychev, A. Dupasquier, D. Fabris, R. Ferragut, G. Ferrari, A. Fischer, A. Fontana, P. Forget, L. Formaro, M. Lunardon, A. Gervasini, M.G. Giammarchi, S.N. Gninenko, G. Gribakin, R. Heyne, S.D. Hogan, A. Kellerbauer, D. Krasnicky, V. Lagomarsino, G. Manuzio, S. Mariazzi, V.A. Matveev, F. Merkt, S. Moretto, C. Morhard, G. Nebbia, P. Nedelec, M.K. Oberthaler, P. Pari, V. Petracek, M. Prevedelli, I. Y. Al-Qaradawi, F. Quasso, O. Rohne, S. Pesente, A. Rotondi, S. Stapnes, D. Sillou, S.V. Stepanov, H. H. Stroke, G. Tino, A. Vairo, G. Viesti, H. Walters, U. Warring, S. Zavatarelli, et al. (2 additional authors not shown)

(Submitted on 30 May 2008)

Abstract: The formation of the antihydrogen beam in the AEGIS experiment through the use of inhomogeneous electric fields is discussed and simulation results including the geometry of the apparatus and realistic hypothesis about the antihydrogen initial conditions are shown. The resulting velocity distribution matches the requirements of the gravity experiment. In particular it is shown that the inhomogeneous electric fields provide radial cooling of the beam during the acceleration.

Comments: Invited talk at Pbar08 – Workshop on Cold Antimatter Plasmas and Application to Fundamental Physics, Okinawa, Japan, 2008

Subjects: Atomic Physics (physics.atom-ph); General Relativity and Quantum Cosmology (gr-qc)

Cite as: arXiv:0805.4727v1 [physics.atom-ph]

Submission history

From: Gemma Testera [view email]

[v1] Fri, 30 May 2008 11:09:41 GMT (262kb)

http://arxiv.org/abs/0805.4727

Thanks for the above reference regarding the dark star theory. I read the link and it was fascinating. By the way, I do not know if I mentioned it, attempts to detect darkstars via IR imaging telescopes will soon be made with telescopes that can see back to the first half billion years after the Big Bang if not earlier. With all of the new evermore more powerful optical telescopes in the works be they IR, visible, or UV telescopes, I think observational astronomers are going to have a field day.

Thanks;

Your Friend Jim

http://www.centauri-dreams.org/?p=1610

I just read an article in Science News Magazine (an early January 2008 issue)about how early stars within 600 million years of the Big Bang may have been powered by cold dark matter annihilations wherein the end result of the CDM reactions was the production of hydrogen and helium. These cold dark matter stars may have been 10 times the diameter of the solar system.

I do not know of the details of the CDM types that supposedly powered such stars but the CDM according to the article is of the particle types that are most likely to be of the actual types of CDM particles that make up at least some of the CDM which cosmologists think icomposes 85% of the matter in our universe.

It is interesting that the end products of the CDM would ultimately be hydrogen and helium which are useful elements in their own way for fueling interstellar travel missions.

My thinking is that if CDM of the types of the weakly interacting massive particles or of some of the varieties of supersymmetry particles predicted to exist in supersymmetry models of particles and fields as predicted to be at least part of the CDM in the universe could be utilized in some sort of annihilation reaction to produce photons while resulting in the end product of hydrogen and helium as a result of the transformations and decays of the non-photon producing reaction sequences to the CDM annihilation reactions, we perhaps might have an energy source that resembles the exothermic quantitative characteristics of matter/antimatter annihilations energy output.

If one where to produce such CDM or collect it from natural sources still existing, naturally there would need to be a mechanism by whiich it could be safely stored. Perhaps some sort of supersymmetric bosonic force field like mechanism could be used to contain the CDM such as fields with bosonic quanta of the sleptons, sneutrinos, or squarks.

Now as a review, it is stated that their might be more than one form of cold dark matter or the cold dark matter may exist in one principle form of matter of the type predicted to exist within the theory of supersymmetry. Just as a review to the reader who may not be familiar to the basic concepts of this theory, supersymmetry theories of particles and fields propose that for each type of normal mattery boson, there exist a odd integer multiple of fundamental spin unit fermion and for each normal matter fermion, there exist a corresponding bosonic or even integer multiple fundamental unit of spin particle. For the normal mattergy photon, gluons, weak force bosons, and the graviton, the corresponding supersymmetric fermions are the photino, gluinos, fermionic weak force counterparts, and the gravatino. For the the normal matter fermionic leptons and quarks, the bosonic supersymmetric mattery counterparts are the three types of selectrons, the three types of snuetrinos, and the six types of squarks. Note that just as matter antimatter counterparts pairs exist for the normal matter particles such as the electrons and antielectrons, and the quarks and the antiquarks, as well as the nuetrinos and the antineutrinos, simmilar counterparts also theoretically exist for the supersymmetric fermions as well such as the Fermi Dirac pairs of the photino and the antiphotino, the gluinos and the antigluinos, the supersymmetric weak force boson fermionic matter counterparts as well as their antimatter counterparts, the gravatino and the antigravatino. Also note that even the normal mattegy Higgs Bosons should have supersymmetric counterparts called Higgsinos and that there should thus be particles called antihiggsinos.

Now since our universe appears to act as an existential unity in terms of its laws of physics, forces, etc., just as it has been proposed that electrogravatic fields might entail the production of gravity fields or antigravity fields from the minipulation of electromagnetic fields utilizing some sort of unification of the force of electromagnetism and gravitation, perhaps the fields associated with sleptons, snuetrinos, and squarks could be manifested by the minipulation of electromagnetic fields, strong and/or weak nuclear force fields, gravity fields, and/or the Higgs fields. Perhaps the minipulation and exotic arrangment of leptons, neutrinos (which technically are leptons), and quarks could result in the direct production of the supersymmetric bosonic fields or perhaps judicious arrangments and/or minipulations of leptons and/or quarks could be used to enhance electromagnetic fields, electric fields, magnetic fields, strong and/or weak nuclear force fields, gravatic fields, and/or the Higgs fields in such a manner that some or all of these fields could be used to manefest the supersymmetric bosonic fields necessary to contain the CDM particles via some sort of unification of forces of electromagnetism, the strong and/or weak nuclear force, gravitation, and/or the Higgs fields with their supersymmetric bosonic counterparts.

Perhaps some sort of solid material vessels made out of supersymmetric fermionic matter could be used to contain additional quantities of supersymmetric matter in much the same manner that: ordinary fuel tanks contain rocket fuels for modern chemical rockets, fusion fuels tanks could contain nuclear fusion fuel for fusion rockets, matter/antimatter composite material fuel storage tanks could contain positronium, and antimatter storage tanks could allow for the safe and stable storage of anti-hydrogen ice or liquid anti-hydrogen, perhaps even stable compressed antihydrogenic counterparts to the proposed dense forms of stable solid metalic hydrogen.

Now, many theorist expect to see evidence if not proof of the existence of some of the supersymmetric fermionic and/or bosonic mattergy types; a process that would lend credence to the theory that at least part of the CDM in our universe takes the form of supersymmetric mattergy. It will be interesting to see the experimental results of such research. I am looking foward to the upgrade of Fermilab and the hopeful will be renewed efforts by the fundamental science funding agencies to develope even more powerful particle accellerators to probe the fundamental structures of particles and/or fields within our universe; a process which can only help our endeavor to reach for the stars.

That’s all for now.

Thanks;

Your Friend Jim

Discovery could lead to “annihilation gamma-ray laser”

http://physicsworld.com/cws/article/news/31125

Although I wouldn’t expect anti-matter to be seriously used as a fuel source until we are about ready to exit our solar system, the fact that it seems doable is very encouraging, as that would mean we could ultimately visit other star systems.

http://www.niac.usra.edu