Showing papers by "Roger Penrose published in 2016"
TL;DR: A test of general relativity, the measurement of the Earth’s dragging of inertial frames normalized to its general relativity value, is presented using about 3.5 years of laser-ranged observations of the LARES, LAGEOS, and LAGEos 2 laser- ranged satellites together with the Earth gravity field model GGM05S produced by the space geodesy mission GRACE.
Abstract: We present a test of general relativity, the measurement of the Earth's dragging of inertial frames. Our result is obtained using about 3.5 years of laser-ranged observations of the LARES, LAGEOS, and LAGEOS 2 laser-ranged satellites together with the Earth gravity field model GGM05S produced by the space geodesy mission GRACE. We measure [Formula: see text], where [Formula: see text] is the Earth's dragging of inertial frames normalized to its general relativity value, 0.002 is the 1-sigma formal error and 0.05 is our preliminary estimate of systematic error mainly due to the uncertainties in the Earth gravity model GGM05S. Our result is in agreement with the prediction of general relativity.
103 citations
TL;DR: In this article, the Earth's dragging of inertial frames is measured using 3.5 years of laser-ranged observations of the LARES, LAGEOS and LAGES 2 satellites together with the Earth gravity field model GGM05S produced by the space geodesy mission GRACE.
Abstract: We present a test of General Relativity, the measurement of the Earth's dragging of inertial frames. Our result is obtained using about 3.5 years of laser-ranged observations of the LARES, LAGEOS and LAGEOS 2 laser-ranged satellites together with the Earth's gravity field model GGM05S produced by the space geodesy mission GRACE. We measure $\mu = (0.994 \pm 0.002) \pm 0.05$, where $\mu$ is the Earth's dragging of inertial frames normalized to its General Relativity value, 0.002 is the 1-sigma formal error and 0.05 is the estimated systematic error mainly due to the uncertainties in the Earth's gravity model GGM05S. Our result is in agreement with the prediction of General Relativity.
91 citations
Book•
01 Sep 2016
TL;DR: Fashion faith and fantasy in the new physics of the universe by is one of the best seller publications on the planet as discussed by the authors. But have you had it? Never? Foolish of you.
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80 citations
TL;DR: Within the scheme of conformal cyclic cosmology (CCC), information can be transmitted from aeon to aeon as discussed by the authors, and the SETI programme may be examined from a novel perspective: such information could, in principle, be encoded in the cosmic microwave background.
Abstract: Within the scheme of conformal cyclic cosmology (CCC), information can be transmitted from aeon to aeon. Accordingly, the “Fermi paradox” and the SETI programme --of communication by remote civilizations-- may be examined from a novel perspective: such information could, in principle, be encoded in the cosmic microwave background. The current empirical status of CCC is also discussed.
19 citations
01 Oct 2016
TL;DR: It is concluded that consciousness plays an intrinsic role in the universe, in light of criticisms and developments in quantum biology, neuroscience, physics and cosmology.
Abstract: The nature of consciousness, the mechanism by which it occurs in the brain, and its ultimate place in the universe are unknown. We proposed in the mid 1990’s that consciousness depends on biologically “orchestrated” coherent quantum processes in collections of microtubules within brain neurons, that these quantum processes correlate with, and regulate, neuronal synaptic and membrane activity, and that the continuous Schrödinger evolution of each such process terminates in accordance with the specific Diósi–Penrose (DP) scheme of “ objective reduction” (“OR”) of the quantum state. This orchestrated OR activity (“Orch OR”) is taken to result in moments of conscious awareness and/or choice. The DP form of OR is related to the fundamentals of quantum mechanics and space–time geometry, so Orch OR suggests that there is a connection between the brain’s biomolecular processes and the basic structure of the universe. Here we review Orch OR in light of criticisms and developments in quantum biology, neuroscience, physics and cosmology. We also introduce novel suggestions of (1) beat frequencies of faster Orch OR microtubule dynamics (e.g. megahertz) as a possible source Biophysics of Consciousness: A Foundational Approach R. R. Poznanski, J. A. Tuszynski and T. E. Feinberg Copyright © 2016 World Scientific, Singapore. b2237_Ch-14.indd 517 4/15/2016 12:31:37 PM 518 S. R. Hameroff & R. Penrose b2237 Biophysics of Consciousness: A Foundational Approach “9x6” FA of the observed electroencephalographic (“ EEG”) correlates of consciousness and (2) that OR played a key role in life’s evolution. We conclude that consciousness plays an intrinsic role in the universe.
18 citations
22 Jun 2016
TL;DR: In this paper, a laser-ranged satellite test of frame dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test.
Abstract: We summarize a laser-ranged satellite test of frame dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test. The frame dragging study analysed 3.5 years of data from the LARES satellite and a longer period of time for the two LAGEOS satellites. Using the gravity field GGM05S obtained via the Grace mission, which measures the Earth's gravitational field, the prediction of General Relativity is confirmed with a 1-σ formal error of 0.002, and a systematic error of 0.05. The result for the value of the frame dragging around the Earth is μ = 0.994, compared to μ = 1 predicted by General Relativity. The thermal force model assumes heat flow from the sun (visual) and from Earth (IR) to the satellite core and to the fused silica reflectors on the satellite, and reradiation into space. For a roughly current epoch (days 1460 — 1580 after launch) we calculate an average along track drag of —0.50pm/sec2.
3 citations
TL;DR: In this paper, a laser-ranged satellite test of frame-dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test.
Abstract: We summarize a laser-ranged satellite test of frame-dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test. The frame dragging study analysed 3.5 years of data from the LARES satellite and a longer period of time for the two LAGEOS satellites. Using the gravity field GGM05S obtained via the Grace mission, which measures the Earth's gravitational field, the prediction of General Relativity is confirmed with a 1-$\sigma$ formal error of 0.002, and a systematic error of 0.05. The result for the value of the frame dragging around the Earth is $\mu$ = 0.994, compared to $\mu$ = 1 predicted by General Relativity. The thermal force model assumes heat flow from the sun (visual) and from Earth (IR) to the satellite core and to the fused silica reflectors on the satellite, and reradiation into space. For a roughly current epoch (days 1460 - 1580 after launch) we calculate an average along-track drag of -0.50 $pm/s^{2}$.