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Yehuda Hoffman
Researcher at The Racah Institute of Physics
Publications - 206
Citations - 10620
Yehuda Hoffman is an academic researcher from The Racah Institute of Physics. The author has contributed to research in topics: Galaxy & Dark matter. The author has an hindex of 53, co-authored 197 publications receiving 9717 citations. Previous affiliations of Yehuda Hoffman include Hebrew University of Jerusalem & Kapteyn Astronomical Institute.
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Constrained realizations of Gaussian fields : a simple algorithm
Yehuda Hoffman,Erez N. Ribak +1 more
TL;DR: A straightforward method for the construction of constrained realizations of Gaussian fields is presented, based on a simple construction of this residual field, which is then added to the analytically calculated mean field.
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Dark Halos: The Flattening of the Density Cusp by Dynamical Friction
TL;DR: In this paper, it is shown that the discrepancy between theory and observations can be easily resolved within the standard CDM model, provided that gas is not initially smoothly distributed in the dark matter halo but rather is concentrated in clumps of mass 0.01% of the total mass of the system.
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Constrained Simulations of the Real Universe. II. Observational Signatures of Intergalactic Gas in the Local Supercluster Region
TL;DR: In this article, the authors present results of gasdynamics+N-body constrained cosmological simulations of the Local Supercluster region (LSC), which closely mimic the real universe within 100 Mpc, by imposing constraints from the MARK III catalog of galaxy peculiar velocities.
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The Laniakea supercluster of galaxies
TL;DR: A map of structure made using a catalogue of peculiar velocities is reported, finding locations where peculiar velocity flows diverge, as water does at watershed divides, and defining a supercluster to be the volume within such a surface, which is the extent of their home superclusters, which the authors call Laniakea.
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A Dynamical Classification of the Cosmic Web
TL;DR: In this article, a new dynamical classification of the cosmic web is proposed, which is based on counting the number of eigenvalues above a certain threshold, λth, at each grid point, where the case of zero, one, two or three such eigen values corresponds to void, sheet, filament or a knot grid point.