3.1k citations · 11.7k across the 51 of their papers we have counts for
53 papers
: Symbolic Models to Predict the Evolution of the CDM Nonlinear Power Spectrum
Manvi Chauhan, Daniel J. Farrow, Ariel G. Sánchez +3
We present and , a pair of analytical emulators developed to predict the nonlinear power spectrum based on its linear counterpart and several esse…
HETDEX [OII] galaxies at : Volume-limited samples and their power spectra
Jeongin Moon, Eiichiro Komatsu, Robin Ciardullo +15
The catalog from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) Public Data Release 1 (PDR1) contains half a million emission-line-selected [OII] galaxies spread across…
Anomalous self-similar solutions of exponential type for the subcritical fast diffusion equation with weighted reaction
Razvan Gabriel Iagar, Ariel Sánchez
We prove existence and uniqueness of the branch of the so-called \emph{anomalous eternal solutions} in exponential self-similar form for the subcritical fast-diffusion equation wit…
Correcting correlation functions for redshift-dependent interloper contamination
Daniel J. Farrow, Ariel G. Sánchez, Robin Ciardullo +14
The construction of catalogues of a particular type of galaxy can be complicated by interlopers contaminating the sample. In spectroscopic galaxy surveys this can be due to the mis…
Separate variable blow-up patterns for a reaction-diffusion equation with critical weighted reaction
Razvan Gabriel Iagar, Ariel Sánchez
We study the separate variable blow-up patterns associated to the following second order reaction-diffusion equation: posed for $x\in\mathbb{R}^N…
Testing one-loop galaxy bias: cosmological constraints from the power spectrum
Andrea Pezzotta, Martin Crocce, Alexander Eggemeier +2
We investigate the impact of different assumptions in the modeling of one-loop galaxy bias on the recovery of cosmological parameters, as a follow up of the analysis done in the fi…
Testing one-loop galaxy bias: joint analysis of power spectrum and bispectrum
Alexander Eggemeier, Román Scoccimarro, Robert E. Smith +3
We present a joint likelihood analysis of the real-space power spectrum and bispectrum measured from a variety of halo and galaxy mock catalogs. A novel aspect of this work is the…
Eternal solutions for a reaction-diffusion equation with weighted reaction
Razvan Gabriel Iagar, Ariel Sánchez
We prove existence and uniqueness of \emph{eternal solutions} in self-similar form growing up in time with exponential rate for the weighted reaction-diffusion equation $$ \partial…
Redshift-space distortions with split densities
Enrique Paillas, Yan-Chuan Cai, Nelson Padilla +1
Accurate modelling of redshift-space distortions (RSD) is challenging in the non-linear regime for two-point statistics e.g. the two-point correlation function (2PCF). We take a di…
MEDUSA: Minkowski functionals estimated from Delaunay tessellations of the three-dimensional large-scale structure
Martha Lippich, Ariel G. Sánchez
Minkowski functionals (MFs) are a set of statistics that characterise the geometry and topology of the cosmic density field and contain complementary information to the standard tw…
KiDS-1000 Cosmology: constraints beyond flat CDM
Tilman Tröster, Marika Asgari, Chris Blake +26
We present constraints on extensions to the flat CDM cosmological model by varying the spatial curvature , the sum of the neutrino masses , the dark energy equati…
KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
Catherine Heymans, Tilman Tröster, Marika Asgari +31
We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from…
Redshift-space effects in voids and their impact on cosmological tests. Part I: the void size function
Carlos M. Correa, Dante J. Paz, Ariel G. Sánchez +3
Voids are promising cosmological probes. Nevertheless, every cosmological test based on voids must necessarily employ methods to identify them in redshift space. Therefore, redshif…
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the Quasar Sample in configuration space between redshift 0.8 and 2.2
Jiamin Hou, Ariel G. Sánchez, Ashley J. Ross +27
We measure the anisotropic clustering of the quasar sample from Data Release 16 (DR16) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (eBOSS).…
Equivalence and finite time blow-up of solutions and interfaces for two nonlinear diffusion equations
Benito Hernández-Bermejo, Razvan Gabriel Iagar, Pilar R. Gordoa +2
In this work, we construct a transformation between the solutions to the following reaction-convection-diffusion equation posed f…
Cosmology from large-scale structure: Constraining CDM with BOSS
Tilman Tröster, Ariel. G. Sánchez, Marika Asgari +9
We reanalyse the anisotropic galaxy clustering measurement from the Baryon Oscillation Spectroscopic Survey (BOSS), demonstrating that using the full shape information provides cos…
Toward a robust inference method for the galaxy bispectrum: likelihood function and model selection
Andrea Oddo, Emiliano Sefusatti, Cristiano Porciani +2
The forthcoming generation of galaxy redshift surveys will sample the large-scale structure of the Universe over unprecedented volumes with high-density tracers. This advancement w…
Blow up profiles for a reaction-diffusion equation with critical weighted reaction
Razvan Gabriel Iagar, Ariel Sánchez
We classify the blow up self-similar profiles for the following reaction-diffusion equation with weighted reaction posed for $(x,t)\in\real\times(0…
One simulation to have them all: performance of the Bias Assignment Method against N-body simulations
Andrés Balaguera-Antolínez, Francisco-Shu Kitaura, Marcos Pellejero-Ibáñez +6
In this paper we demonstrate that the information encoded in \emph{one} single (sufficiently large) -body simulation can be used to reproduce arbitrary numbers of halo catalogue…
Non-fiducial cosmological test from geometrical and dynamical distortions around voids
Carlos M. Correa, Dante J. Paz, Nelson D. Padilla +3
We present a new cosmological test using the distribution of galaxies around cosmic voids without assuming a fiducial cosmology. The test is based on a physical model for the void-…
Large-scale redshift space distortions in modified gravity theories
César Hernández-Aguayo, Jiamin Hou, Baojiu Li +2
Measurements of redshift space distortions (RSD) provide a means to test models of gravity on large-scales. We use mock galaxy catalogues constructed from large N-body simulations…
Comparing approximate methods for mock catalogues and covariance matrices III: Bispectrum
Manuel Colavincenzo, Emiliano Sefusatti, Pierluigi Monaco +19
We compare the measurements of the bispectrum and the estimate of its covariance obtained from a set of different methods for the efficient generation of approximate dark matter ha…
Comparing approximate methods for mock catalogues and covariance matrices II: Power spectrum multipoles
Linda Blot, Martin Crocce, Emiliano Sefusatti +19
We study the accuracy of several approximate methods for gravitational dynamics in terms of halo power spectrum multipoles and their estimated covariance matrix. We propagate the d…
Comparing approximate methods for mock catalogues and covariance matrices I: correlation function
Martha Lippich, Ariel G. Sánchez, Manuel Colavincenzo +19
This paper is the first in a set that analyses the covariance matrices of clustering statistics obtained from several approximate methods for gravitational structure formation. We…