Bulletin of the American Physical Society
13th Annual Meeting of the Northwest Section of the APS
Volume 56, Number 10
Thursday–Saturday, October 20–22, 2011; Corvallis, Oregon
Session H2: Astrophysics, Cosmology and Gravity |
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Chair: James Imamura, University of Oregon Room: LaSells Stewart Center Agriculture Production Room |
Saturday, October 22, 2011 1:30PM - 2:06PM |
H2.00001: Forming Spiral Galaxies in a Cold Dark Matter Universe Invited Speaker: The standard Cold Dark Matter (CDM) model for structure formation makes predictions over a wide range of scales. One of the most challenging of these predictions is the structure of spiral galaxies like the Milky Way and smaller. First the theory of these structures requires following dynamical interactions over long periods of time which in turn requires large simulations. Second there are a couple of straight forward predictions of CDM that appear to be contradicted by observations: the cores of dwarf galaxies are less dense than predicted, and there are many fewer small satellite galaxies of the Milky Way than predicted. I will review recent simulation results that address these issues. [Preview Abstract] |
Saturday, October 22, 2011 2:06PM - 2:42PM |
H2.00002: Cosmological ``Truths'' Invited Speaker: Ever since Aristotle placed us, with certainty, in the Center of the Cosmos, Cosmological models have more or less operated from a position of known truths for some time. As early as 1963, for instance, it was ``known'' that the Universe had to be 15-17 billion years old due to the suspected ages of globular clusters. For many years, attempts to determine the expansion age of the Universe (the inverse of the Hubble constant) were done against this preconceived and biased notion. Not surprisingly when more precise observations indicated a Hubble expansion age of 11-13 billion years, stellar models suddenly changed to produce a new age for globular cluster stars, consistent with 11-13 billion years. Then in 1980, to solve a variety of standard big bang problems, inflation was introduced in a fairly ad hoc manner. Inflation makes the simple prediction that the net curvature of spacetime is zero (i.e. spacetime is flat). The consequence of introducing inflation is now the necessary existence of a dark matter dominated Universe since the known baryonic material could comprise no more than 1{\%} of the necessary energy density to make spacetime flat. As a result of this new cosmological ``truth'' a significant world wide effort was launched to detect the dark matter (which obviously also has particle physics implications). To date, no such cosmological component has been detected. Moreover, all available dynamical inferences of the mass density of the Universe showed in to be about 20{\%} of that required for closure. This again was inconsistent with the truth that the real density of the Universe was the closure density (e.g. Omega = 1), that the observations were biased, and that 99{\%} of the mass density had to be in the form of dark matter. That is, we know the universe is two component -- baryons and dark matter. Another prevailing cosmological truth during this time was that all the baryonic matter was known to be in galaxies that populated our galaxy catalogs. Subsequent observations showed that a significant population of baryons was contained in both a) a population of not easily detected galaxies (i.e. they had been missed for decades) and b) in intergalactic space. In 1999, the balloon borne Boomerang experiment gave good evidence that space was flat (total energy density = 1). Around this same time, various lines of evidence suggested that the ``cosmological constant'' (Lambda) maybe non-zero meaning we now live in a three component universe of baryons, dark matter and dark energy. The WMAP mission a few years later then produced our current cosmological truth that 5{\%} of the Universe is baryons, 20{\%} is Dark Matter, and 75{\%} is Dark energy. What happened to Dark Matter dominance? Where did it go? Is this a fine tuned Universe? Our current cosmological truth, as defined by the WMAP results, rests on two important assumptions: a) that we fully understand gravity as a long range force and that alternative models, such as Modified Newtonian Dynamics (MOND) can therefore be dismissed and b) observationally we are fully confident that we understand supernova explosion physics to the point that they can be used as reliable cosmological indicators. This talk will attempt to summarize this evolution of cosmological truths, cast doubt on the certainty of the previously stated assumptions, and to culturally suggest that we should not continue with arrogance of Aristotle is assuring ourselves that we do in fact, know the ``truth''. [Preview Abstract] |
Saturday, October 22, 2011 2:42PM - 2:54PM |
H2.00003: ADMX: the Axion Dark Matter eXperiment Dmitry Lyapustin The axion is a particle arising from the Pecci-Quinn solution to the strong CP problem. Peccei-Quinn symmetry breaking in the early universe could produce a large number of axions which would still be present today, making the axion a compelling dark matter candidate. The goal of the Axion Dark Matter Experiment (ADMX) is to detect these relic axions through their conversion to photons in a strong magnetic field. Recent limits and future upgrades will be discussed. [Preview Abstract] |
Saturday, October 22, 2011 2:54PM - 3:06PM |
H2.00004: The moon-Earth system...As a vacuum gravity energy machine? A Hint about the Nature of Universal Gravity that May Have Been Overlooked Roy Masters We revisit the theories describing the moon raising the tides by virtue of pull gravity combined with the moon's centripetal angular momentum. We show that if gravity is considered as the attractive interaction between individual bodies, then a laboring moon doing work would have fallen to earth eons ago. Isaac Newton's laws of motion cannot work with pull gravity, but they do with Einstein's gravity as a property of the universe, which produces a continuous infusion of energy. In other words, the moon-Earth system becomes the first observable vacuum gravity energy machine. In other words the dynamics of what appears to be a closed system has been producing energy that continues raising the tides into perpetuity along with the force needed for the moon to escape the Earth's gravitational pull 4cm per year. All this is in defiance of Newton's first law which says ``If no force is added to a body it cannot accelerate.'' In this theory, a flowing space-time curves with three dimensions of force. A (flowing) spatial fabric bends around mass and displaces the inverse square field vanishing point property of matter with the appearance of a push-force square of the distance. In other words, the immeasurable universal gravity field appears as measurable local gravitation, concentrating universal gravitational pressure with the square of the distance from the very point was supposed to have disappeared. Needless to say such ``gravity'' necessitates a different beginning. [Preview Abstract] |
Saturday, October 22, 2011 3:06PM - 3:26PM |
H2.00005: BREAK
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Saturday, October 22, 2011 3:26PM - 3:38PM |
H2.00006: Dark Matter, Waves, and Identification Orvin Wagner In 1994 I wrote article for Physics Essays (Waves in Dark Matter) showing how the solar system is organized and stabilized by dark matter standing waves from the dark matter oscillating sun. Wave velocity is apparently inversely proportional to the square root of the dark matter density. At the sun's surface the wave velocity is near 1.25 m/s. More recently I have found local dark matter waves that appear to travel near 25 m/s near April 1 and appear to organize plants. They travel between plants and artificial transmitters and receivers, and penetrate my local hill. From my measurements the local dark matter density is a function of the time of year. The data indicate that dark matter interacts much more than just with gravity as others have surmised. I present experimental proofs and a local dark matter density equation in terms of the measured velocity. The waves and the earth's location may be very important for nature's organization. The observed behavior appears to go a long way towards dark matter identification. These waves also may explain the rings of the gaseous planets in terms of oscillating layers. See the ring article on the web site Darkmatterwaves.com. [Preview Abstract] |
Saturday, October 22, 2011 3:38PM - 3:50PM |
H2.00007: ABSTRACT WITHDRAWN
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Saturday, October 22, 2011 3:50PM - 4:02PM |
H2.00008: Measurable relativistic effects associated with tachyonic neutrino data from the OPERA detector George Soli Relativity theory demands a sidereal velocity relative to the cosmic microwave background (CMB) dipole for tachyonic neutrinos. The OPERA time of flight (TOF) measurements must oscillate with the direction of tachyonic neutrino propagation relative to the CMB dipole. The magnitude and direction of this TOF oscillation is a measurement of the Earth's velocity relative to the CMB rest frame, which we already know. [Preview Abstract] |
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