Power Spectrum Tomography with Weak Lensing

Kavli Affiliate: Wayne Hu | First 5 Authors: Wayne Hu, , , , | Summary: Upcoming weak lensing surveys on wide fields will provide the opportunity to reconstruct the structure along the line of sight tomographically by employing photometric redshift information about the source distribution. We define power-spectrum statistics, including cross correlation between redshift bins, […]


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Solar-bound weakly interacting massive particles: a no-frills phenomenology

Kavli Affiliate: Juan I. Collar | First 5 Authors: Juan I. Collar, , , , | Summary: The case for a stable population of solar-bound Earth-crossing Weakly Interacting Massive Particles (WIMPs) is reviewed. A practical general expression for their speed distribution in the laboratory frame is derived under basic assumptions. If such a population exists […]


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Metal enrichment of the intergalactic medium

Kavli Affiliate: Nickolay Gnedin | First 5 Authors: Nickolay Y. Gnedin, , , , | Summary: I demonstrate by means of high resolution cosmological simulations, which include modelling of a two-phase interstellar medium, that the dominant mechanism for transporting heavy elements from the proto-galaxies into the IGM is the merger mechanism as discovered by Gnedin […]


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Spin Dependence of D0-brane Interactions

Kavli Affiliate: Jeffrey Harvey | First 5 Authors: Jeffrey A. Harvey, , , , | Summary: The long-range, spin-dependent forces between D0-branes are related to long-range fundamental string interactions using duality. These interactions can then be computed by taking the long distance non-relativistic expansion of string four-point amplitudes. The results are in accord with the […]


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Weak Lensing and the Measurement of q0 from Type Ia Supernovae

Kavli Affiliate: Joshua Frieman | First 5 Authors: Joshua A. Frieman, , , , | Summary: On-going projects to discover Type Ia supernovae at redshifts z = 0.3 – 1, coupled with improved techniques to narrow the dispersion in SN Ia peak magnitudes, have renewed the prospects for determining the cosmic deceleration parameter q_0. We […]


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Luminosity Functions from Photometric Redshifts I: Techniques

Kavli Affiliate: Mark SubbaRao | First 5 Authors: M. U. SubbaRao, A. J. Connolly, A. S. Szalay, D. C. Koo, | Summary: The determination of the galaxy luminosity function is an active and fundamental field in observational cosmology. In this paper we propose a cost effective way of measuring galaxy luminosity functions at faint magnitudes. […]


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Loop Corrections in Non-Linear Cosmological Perturbation Theory

Kavli Affiliate: Joshua Frieman | First 5 Authors: Roman Scoccimarro, Joshua Frieman, , , | Summary: Using a diagrammatic approach to Eulerian perturbation theory, we analytically calculate the variance and skewness of the density and velocity divergence induced by gravitational evolution from Gaussian initial conditions, including corrections *beyond* leading order. Except for the power spectrum, […]


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