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- Centro de Investigaciones Energéticas, Medioambientales y TecnológicasES55 papers
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- University College LondonGB54 papers
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- Astronomical Institute of the Slovak Academy of SciencesSK47 papers
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4 papers · 1 filter
Wavefronts and Light Cones for Kerr Spacetimes
Francisco Frutos-Alfaro, Frank Grave, Thomas Mueller +1
We investigate the light propagation by means of simulations of wavefronts and light cones for Kerr spacetimes. Simulations of this kind give us a new insight to better understand…
Halting Migration: Numerical Calculations of Corotation Torques in the Weakly Nonlinear Regime
Paul C. Duffell
Planets in their formative years can migrate due to the influence of gravitational torques in the protoplanetary disk they inhabit. For low-mass planets in an isothermal disk, it i…
Comoving to expansion Newtonian potential of galaxies and clusters instead of dark matter
Zahid Zakir
Stretching of the Newtonian potential (NP) at early epochs is investigated and it is shown that observed effects, usually ascribed to a dark matter, can by explained by such stretc…
The expansion rate of the intermediate Universe in light of Planck
Licia Verde, Pavlos Protopapas, Raul Jimenez
We use cosmology-independent measurements of the expansion history in the redshift range 0.1 < z <1.2 and compare them with the Cosmic Microwave Background-derived expansion histor…