292 citations · 5.5k across the 107 of their papers we have counts for
65 papers · 1 filter
Dispersion Measures of Fast Radio Bursts through the Epoch of Reionization
Joshua J. Ziegler, Paul R. Shapiro, Taha Dawoodbhoy +13
Dispersion measures (DM) of fast radio bursts (FRBs) probe the density of electrons in the intergalactic medium (IGM) along their lines-of-sight, including the average density vers…
HINORA, a method for detecting ring-like structures in 3D point distributions I: application to the Local Volume Galaxy catalogue
Edward Olex, Alexander Knebe, Noam I. Libeskind +2
We present a new method - called HINORA (HIgh-NOise RANdom SAmple Consensus) - for the identification of regular structures in 3D point distributions. Motivated by the possible exi…
Simulating the LOcal Web (SLOW) II: Properties of local galaxy clusters
Elena Hernández-Martínez, Klaus Dolag, Benjamin Seidel +6
This is the second paper in a series presenting the results from a 500 Mpc large constrained hydro-dynamical simulation of the local Universe (SLOW). The initial conditions…
The large scale velocity field from the Cosmicflows-4 data
Yehuda Hoffman, Aurélien Valade, Noam I. Libeskind +5
The reconstruction of the large scale velocity field from the grouped Cosmicflows-4 (CF4) database is presented. The lognormal bias of the inferred distances and velocities data is…
On the general nature of 21cm-Lyman- emitters cross-correlations during reionisation
Anne Hutter, Caroline Heneka, Pratika Dayal +4
We explore how the characteristics of the cross-correlation functions between the 21cm emission from the spin-flip transition of neutral hydrogen (HI) and early Lyman- (Ly) r…
A Local Universe model for constrained simulations
Simon Pfeifer, Aurélien Valade, Stefan Gottlöber +3
The aim of cosmological simulations is to reproduce the properties of the observed Universe, serving as tools to test structure and galaxy formation models. Constrained simulations…
Simulating the LOcal Web (SLOW): I. Anomalies in the local density field
Klaus Dolag, Jenny G. Sorce, Sergey Pilipenko +5
Context: Several observations of the local Universe (LU) point towards the existence of very prominent structures. The presence of massive galaxy clusters and local super clusters…
Reionization time of the Local Group and Local-Group-like halo pairs
Jenny G. Sorce, Pierre Ocvirk, Dominique Aubert +7
Patchy cosmic reionization resulted in the ionizing UV background asynchronous rise across the Universe. The latter might have left imprints visible in present day observations. Se…
Testing gravity with galaxy-galaxy lensing and redshift-space distortions using CFHT-Stripe 82, CFHTLenS and BOSS CMASS datasets
E. Jullo, S. de la Torre, M. -C. Cousinou +10
The combination of Galaxy-Galaxy Lensing (GGL) and Redshift Space Distortion of galaxy clustering (RSD) is a privileged technique to test General Relativity predictions, and break…
The quasi-linear nearby Universe
Yehuda Hoffman, Edoardo Carlesi, Daniel Pomarède +5
The local Universe provides a unique opportunity for testing cosmology and theories of structure formation. To facilitate this opportunity we present a new method for the reconstru…
Toward an Optimal Sampling of Peculiar Velocity Surveys For Wiener Filter Reconstructions
Jenny G. Sorce, Yehuda Hoffman, Stefan Gottlöber
The Wiener Filter (WF) technique enables the reconstruction of density and velocity fields from observed radial peculiar velocities. This paper aims at identifying the optimal desi…
Galaxy Three-Point Correlation Functions and Halo/Subhalo Models
Hong Guo, Zheng Zheng, Peter S. Behroozi +9
We present the measurements of the luminosity-dependent redshift-space three-point correlation functions (3PCFs) for the Sloan Digital Sky Survey (SDSS) DR7 Main galaxy sample. We…
How did the Virgo cluster form?
Jenny G. Sorce, Stefan Gottloeber, Yehuda Hoffman +1
While the Virgo cluster is the nearest galaxy cluster and therefore the best observed one, little is known about its formation history. In this paper, a set of cosmological simulat…
The alignment of galaxy spin with the shear field in observations
Isha Pahwa, Noam I. Libeskind, Elmo Tempel +6
Tidal torque theory suggests that galaxies gain angular momentum in the linear stage of structure formation. Such a theory predicts alignments between the spin of haloes and tidal…
Universal void density profiles from simulation and SDSS
S. Nadathur, S. Hotchkiss, J. M. Diego +4
We discuss the universality and self-similarity of void density profiles, for voids in realistic mock luminous red galaxy (LRG) catalogues from the Jubilee simulation, as well as i…
Self-similarity and universality of void density profiles in simulation and SDSS data
S. Nadathur, S. Hotchkiss, J. M. Diego +4
The stacked density profile of cosmic voids in the galaxy distribution provides an important tool for the use of voids for precision cosmology. We study the density profiles of voi…
The universal nature of subhalo accretion
Noam I Libeskind, Alexander Knebe, Yehuda Hoffman +1
We examine the angular infall pattern of subhaloes onto host haloes in the context of the large-scale structure. We find that this infall pattern is essentially driven by the shear…
The Jubilee ISW Project II: observed and simulated imprints of voids and superclusters on the cosmic microwave background
S. Hotchkiss, S. Nadathur, S. Gottlöber +4
We examine the integrated Sachs-Wolfe (ISW) imprint of voids and superclusters on the cosmic microwave background. We first study results from the Jubilee -body simulation. From…
Cosmic variance of the local Hubble flow in large-scale cosmological simulations
Radoslaw Wojtak, Alexander Knebe, William A. Watson +5
The increasing precision in the determination of the Hubble parameter has reached a per cent level at which large-scale cosmic flows induced by inhomogeneities of the matter distri…
Dark Matter in the Local Universe
Gustavo Yepes, Stefan Gottloeber, Yehuda Hoffman
We review how dark matter is distributed in our local neighbourhood from an observational and theoretical perspective. We will start by describing first the dark matter halo of our…
Simulations of the Local Universe Constrained by Observational Peculiar Velocities
Jenny G. Sorce, Helene M. Courtois, Stefan Gottloeber +2
Peculiar velocities, obtained from direct distance measurements, are data of choice to achieve constrained simulations of the Local Universe reliable down to a scale of a few Megap…
The stellar-to-halo mass relation for Local Group galaxies
C. B. Brook, A. Di Cintio, A. Knebe +4
We contend that a single power law halo mass distribution is appropriate for direct matching to the stellar masses of observed Local Group dwarf galaxies, allowing the determinatio…
Halo Abundance Matching: accuracy and conditions for numerical convergence
Anatoly Klypin, Francisco Prada, Gustavo Yepes +2
Accurate predictions of the abundance and clustering of dark matter haloes play a key role in testing the standard cosmological model. Here, we investigate the accuracy of one of t…
The velocity shear and vorticity across redshifts and non-linear scales
Noam I Libeskind, Yehuda Hoffman, Stefan Gottlöber
The evolution of the large scale distribution of matter in the universe is often characterized by the density field. Here we take a complimentary approach and characterize it using…