Results 11 to 20 of about 9,886 (203)
Superluminal Motion and Relativistic Beaming in Blazar Jets [PDF]
, 2002 High resolution radio observations remain the most direct way to study the formation and evolution of radio jets associated with the accretion onto massive black holes. We report preliminary results of our seven year VLBA observational program to understand the nature of relativistic beaming in blazars and the surrounding environment of massive black ...
K. I. Kellermann +7 more
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Superluminal motion in (semi)classical relativity [PDF]
, 2006 Pedagogical review.
S. Krasnikov
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Replicating physical motion with Minkowskian isorefractive spacetime crystals. [PDF]
Nanophotonics, 2023 Abstract Here, we show that isorefractive spacetime crystals with a travelling‐wave modulation may mimic rigorously the response of moving material systems. Unlike generic spacetime crystals, which are characterized by a bi‐anisotropic coupling in the co‐moving frame, isorefractive crystals exhibit an observer‐independent response, resulting in ...
Prudêncio FR, Silveirinha MG.
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A simple superluminal but not physical motion [PDF]
, 2007 We discuss a superluminal unphysical motion which, we believe, has a high pedagogical potential. It highlights the physics behind the concept of simultaneity in special relativity and illustrates the non-physical character of superluminal speeds offering a rewarding exercise in handling the Minkowski space-time diagram.
Nilton Penha, Bernhard Rothenstein
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A note on Lorentz‐like transformations and superluminal motion [PDF]
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2014 In this extended note a critical discussion of an extension of the Lorentz transformations for velocities faster than the speed of light given recently by Hill and Cox [1] is provided. The presented approach reveals the connection between faster‐than‐light speeds and the issue of isotropy of space.
C. Jin, M. Lazar
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OPERA neutrinos and superluminal helical motion [PDF]
, 2011 We pinpoint how a subatomic particle with non-zero mass may attain, in principle, velocities faster-than-light by travelling in helical motion in the limit of very large momentum. This is an educated guess by virtue of the MINOS and OPERA experiments on eventual superluminal propagation of neutrinos.
Enrique Canessa
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Superluminal motion and closed signal curves [PDF]
, 2007 10 pages, 3 figures, argument about the Hawking and Ellis theorem on stable causality added in the ...
Camille Bonvin +2 more
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Synthesis of space-time wave packets using correlated frequency comb and spatial field. [PDF]
NanophotonicsAbstract Shaping transverse degrees of freedom across different temporal frequency spectra has unlocked new possibilities for realizing a wide variety of novel spatiotemporal phenomena. In particular, using the discrete frequencies of optical frequency combs for spatiotemporal synthesis enables precise spatial separation and control of individual ...
Willner AE +9 more
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Explanations of Superluminal Motion [PDF]
Symposium - International Astronomical Union, 1984 P. A. G. Scheuer
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Superluminal anisotropic propagation and wavefront splitting on tilted and boosted braneworlds
Physics Letters B, 2023 Braneworlds winding and spinning around an extra compact dimension manifest superluminal propagation for fields penetrating the bulk. This propagation is either irreducibly anisotropic or one that becomes isotropic in a special frame, depending on the ...
Alexios P. Polychronakos
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