Results 11 to 20 of about 1,395,528 (162)

Classical aspects of lightlike dimensional reduction [PDF]

, 2006
Some aspects of lightlike dimensional reduction in flat spacetime are studied with emphasis to classical applications. Among them the Galilean transformation of shadows induced by inertial frame changes is studied in detail by proving that, (i) the ...
E. Minguzzi, E. Minguzzi
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Application of modelling tecniques to manage a population of grey squirrels (<em>Sciurus carolinensis</em>) in Lombardy, northern Italy, and analysis of parameters estimates used in simulations

Hystrix, the Italian Journal of Mammalogy, 2006
<strong>Abstract</strong> Grey squirrel (<em>Sciurus carolinensis</em>), an invasive alien species, is currently replacing the native Eurasian red squirrel (Sciurus vulgaris) in British Isles and north-west Italy.
Clara Tattoni, Damiano Preatoni, Adriano Martinoli, Sandro Bertolino, Lucas Wauters   +4 more
doaj   +1 more source

Jet Collimation by Small-Scale Magnetic Fields [PDF]

, 2001
A popular model for jet collimation is associated with the presence of a large-scale and predominantly toroidal magnetic field originating from the central engine (a star, a black hole, or an accretion disk). Besides the problem of how such a large-scale
Benford G., Blandford R. D., Blandford R. D., Blandford R. D., Curtis H. D., Ferreira A., Ferreira A., Ferreira A., Kadomtsev B. B., Kersale E., Laing R. A., Li‐Xin Li, Macdonald D., Matthews A. P., Matthews A. P., Spruit H. C., Tout C. A., Tout C. A.   +17 more
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Exceptional generalised geometry for massive IIA and consistent reductions [PDF]

, 2016
We develop an exceptional generalised geometry formalism for massive type IIA supergravity. In particular, we construct a deformation of the generalised Lie derivative, which generates the type IIA gauge transformations as modified by the Romans mass. We
Cassani, Davide, de Felice, Oscar, Petrini, Michela, Strickland-Constable, Charles, Waldram, Daniel   +4 more
core   +5 more sources

CPT and Lorentz tests with muons [PDF]

, 1999
Precision experiments with muons are sensitive to Planck-scale CPT and Lorentz violation that is undetectable in other tests. Existing data on the muonium ground-state hyperfine structure and on the muon anomalous magnetic moment could be analyzed to ...
B. Schwingenheuer, C. J. Berglund, Charles D. Lane, D. Colladay, D. Colladay, D. Colladay, D. Colladay, F. E. Maas, F. J. M. Farley, G. Breit, G. Gabrielse, H. G. Dehmelt, H. Mendlowitz, J. Bailey, J. D. Prestage, J. M. Chung, L. Foldy, L. K. Gibbons, M. Pérez-Victoria, O. Bertolami, R. Ackerstaff, R. Bluhm, R. Bluhm, R. Bluhm, R. D. Bolton, R. Jackiw, R. M. Carey, R. Mittleman, R. S. Van Dyck, Jr., R. S. Van Dyck, Jr., R. W. P. Drever, Robert Bluhm, S. Coleman, S. K. Lamoreaux, S. M. Carroll, T. E. Chupp, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. Alan Kostelecký, V. W. Hughes, W. Liu   +50 more
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The Relativistic Generalization of the Gravitational Force for Arbitrary Spacetimes [PDF]

, 2007
It has been suggested that re-expressing relativity in terms of forces could provide fresh insights. The formalism developed for this purpose only applied to static, or conformally static, space-times. Here we extend it to arbitrary space-times.
A. Qadir, A. Qadir, Asghar Qadir, C. W. Misner, M. A. Abramowicz, M. Sharif, O. Gron, S. M. Mahajan, S. W. Hawking, S. Weinberg   +9 more
core   +2 more sources

Infrared Candidates for the Intense Galactic X-ray Source GX 17+2 [PDF]

, 1999
We present new astrometric solutions and infrared Hubble Space Telescope observations of GX 17+2 (X1813-140), one of the brightest X-ray sources on the celestial sphere. Despite 30 years of intensive study, and the existence of a strong radio counterpart
Bradt H. V., Bruce Margon, Davidsen A., Eric W. Deutsch, Hjellming R. M., Margon B., Naylor T., Scott F. Anderson, Stefanie Wachter, Sztajno M., Tarenghi M., W. M. Goss   +11 more
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Gravitational Energy Loss and Binary Pulsars in the Scalar Ether-Theory of Gravitation

, 2003
Motivation is given for trying a theory of gravity with a preferred reference frame (``ether'' for short). One such theory is summarized, that is a scalar bimetric theory. Dynamics is governed by an extension of Newton's second law.
A M, CM Willm, CW Misner, EM Standish, G Builder, H Poincaré, H Poincaré, H Poincaré, HA Lorentz, J Butterfield, JH Taylor, L L, M Arminjon, M Arminjon, M Arminjon, M Arminjon, M Arminjon, M Arminjon, M Arminjon, P Feyerabend, S Chandrasekhar, S Chandrasekhar, SJ Prokhovnik, T Damour, T Futamase, VA Fock, W S   +26 more
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Construction and Performance of a Micro-Pattern Stereo Detector with Two Gas Electron Multipliers [PDF]

, 2001
The construction of a micro-pattern gas detector of dimensions 40x10 cm**2 is described. Two gas electron multiplier foils (GEM) provide the internal amplification stages. A two-layer readout structure was used, manufactured in the same technology as the
A Skiba, Ageron, Angelini, Bachmann, Bressan, Celano, D Mörmann, D Neuberger, F Kühn, F Röderer, H.J Simonis, K Kärcher, M Erdmann, M Fahrer, P Blüm, S Weseler, Sauli, T Barvich, Th Müller, Th Weiler, W.H Thümmel   +20 more
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The multi-scale dust formation in substellar atmospheres

, 2004
Substellar atmospheres are observed to be irregularly variable for which the formation of dust clouds is the most promising candidate explanation. The atmospheric gas is convectively unstable and, last but not least, colliding convective cells are seen ...
Helling, Christiane, Klein, Rupert, Sedlmayr, Erwin   +2 more
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