Mariana Vargas-Magaña
A5102833639- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Stellar, planetary, and galactic studies
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Dark Matter and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- CCD and CMOS Imaging Sensors
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- Remote Sensing in Agriculture
- Superconducting and THz Device Technology
- Black Holes and Theoretical Physics
- Pulsars and Gravitational Waves Research
- Particle physics theoretical and experimental studies
- Solar and Space Plasma Dynamics
- History and Developments in Astronomy
- Astrophysics and Star Formation Studies
- Calibration and Measurement Techniques
- Statistical and numerical algorithms
Universidad Nacional Autónoma de México
2016-2025
Frankfurt Institute for Advanced Studies
2023
Goethe University Frankfurt
2023
Leibniz Institute for Astrophysics Potsdam
2023
John Wiley & Sons (Germany)
2023
Universidad Autónoma de la Ciudad de México
2021
Laboratoire AstroParticule et Cosmologie
2011-2019
Carnegie Mellon University
2014-2018
Université Paris Cité
2011-2015
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2012-2015
We present cosmological results from the final galaxy clustering data set of Baryon Oscillation Spectroscopic Survey, part Sloan Digital Sky Survey III. Our combined sample comprises 1.2 million massive galaxies over an effective area 9329 deg^2 and volume 18.7 Gpc^3, divided into three partially overlapping redshift slices centred at redshifts 0.38, 0.51, 0.61. measure angular diameter distance DM Hubble parameter H baryon acoustic oscillation (BAO) method after applying reconstruction to...
We present a one per cent measurement of the cosmic distance scale from detections baryon acoustic oscillations (BAO) in clustering galaxies Baryon Oscillation Spectroscopic Survey, which is part Sloan Digital Sky Survey III. Our results come Data Release 11 (DR11) sample, containing nearly million and covering approximately 8500 square degrees redshift range 0.2 < |$z$| 0.7. also compare these with those publicly released DR9 DR10 samples. Assuming concordance Λ cold dark matter (ΛCDM)...
We present the cosmological implications from final measurements of clustering using galaxies, quasars, and Ly$\alpha$ forests completed Sloan Digital Sky Survey (SDSS) lineage experiments in large-scale structure. These experiments, composed data SDSS, SDSS-II, BOSS, eBOSS, offer independent baryon acoustic oscillation (BAO) angular-diameter distances Hubble relative to sound horizon, $r_d$, eight different samples six growth rate parameter, $f\sigma_8$, redshift-space distortions (RSD)....
We present measurements of galaxy clustering from the Baryon Oscillation Spectroscopic Survey (BOSS), which is part Sloan Digital Sky III (SDSS-III). These use Data Release 9 (DR9) CMASS sample, contains 264 283 massive galaxies covering 3275 square degrees with an effective redshift z = 0.57 and range 0.43 < 0.7. Assuming a concordance ΛCDM cosmological model, this sample covers volume 2.2 Gpc3, represents largest Universe ever surveyed at density, . measure angle-averaged correlation...
We derive constraints on cosmological parameters and tests of dark energy models from the combination baryon acoustic oscillation (BAO) measurements with cosmic microwave background (CMB) Type Ia supernova (SN) data. take advantage high-precision BAO galaxy clustering Ly-alpha forest (LyaF) in BOSS survey SDSS-III. data alone yield a high confidence detection energy, CMB angular scale they further imply nearly flat universe. Combining SN into an "inverse distance ladder" yields 1.7%...
The Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky (SDSS) III project, has provided largest survey galaxy redshifts available to date, in terms both number measured by a single survey, and effective cosmological volume covered. Key analysing clustering these data provide measurements is understanding detailed properties this sample. Potential issues include variations target catalogue caused changes either targeting algorithm or used, pattern spectroscopic...
We present measurements of the Baryon Acoustic Oscillation (BAO) scale in redshift-space using clustering quasars. consider a sample 147 000 quasars from extended Spectroscopic Survey (eBOSS) distributed over 2044 square degrees with redshifts 0.8 < z 2.2 and measure their spherically averaged both configuration Fourier space. Our observational data set 1400 simulated realizations allow us to detect preference for BAO that is greater than 2.8σ. determine distance = 1.52 3.8 per cent...
We investigate the anisotropic clustering of Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 (DR12) sample, which consists $1\,198\,006$ galaxies in redshift range $0.2 < z 0.75$ and a sky coverage $10\,252\,$deg$^2$. analyse this dataset Fourier space, using power spectrum multipoles to measure Redshift-Space Distortions (RSD) simultaneously with Alcock-Paczynski (AP) effect Acoustic (BAO) scale. include monopole, quadrupole hexadecapole our analysis compare measurements...
We reproduce the galaxy clustering catalogue from SDSS-III Baryon Oscillation Spectroscopic Survey Final Data Release (BOSS DR11&DR12) with high fidelity on all relevant scales in order to allow a robust analysis of baryon acoustic oscillations and redshift space distortions. have generated (6,000) 12,288 MultiDark PATCHY BOSS (DR11) DR12 light-cones corresponding an effective volume $\sim192,000\,[h^{-1}\,{\rm Gpc}]^3$ (the largest ever simulated volume), including cosmic evolution range...
ABSTRACT We measure the anisotropic clustering of quasar sample from Data Release 16 (DR16) Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic (eBOSS). A 343 708 spectroscopically confirmed quasars between redshift 0.8 &lt; z 2.2 are used as tracers underlying dark matter field. In comparison with DR14 sample, final doubles number objects well survey area. this paper, we present analysis in configuration space by measuring two-point correlation function and decomposing...
We present the cosmological analysis of configuration-space anisotropic clustering in completed Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic (eBOSS) DR16 galaxy sample. This sample consists luminous red galaxies (LRGs) spanning redshift range $0.6 < z 1$, at an effective $z_{\rm eff}=0.698$. It combines 174 816 eBOSS LRGs and 202 642 BOSS CMASS galaxies. extract model baryon acoustic oscillations (BAO) redshift-space distortions (RSD) features from...
We analyse the density field of galaxies observed by Sloan Digital Sky Survey (SDSS)-III Baryon Oscillation Spectroscopic (BOSS) included in SDSS Data Release Nine (DR9). DR9 includes spectroscopic redshifts for over 400 000 spread a footprint 3275 deg2. identify, characterize and mitigate impact sources systematic uncertainty on large-scale clustering measurements, both angular moments redshift-space correlation function, ξℓ(s), spherically averaged power spectrum, P(k), order to ensure...
We present baryon acoustic oscillation (BAO) scale measurements determined from the clustering of 1.2 million massive galaxies with redshifts 0.2 < z 0.75 distributed over 9300 deg2, as quantified by their redshift–space correlation function. In order to facilitate these measurements, we define, describe, and motivate selection function for in final data release (DR12) SDSS III Baryon Oscillation Spectroscopic Survey (BOSS). This includes observational footprint, masks image quality Galactic...
We analyse the clustering of Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Data Release 16 luminous red galaxy sample (DR16 eBOSS LRG) in combination with high redshift tail III 12 (DR12 BOSS CMASS). measure space distortions (RSD) and also extract longitudinal transverse baryonic acoustic oscillation (BAO) scale from anisotropic power spectrum signal inferred 377,458 galaxies between redshifts 0.6 1.0, effective $z_{\rm eff}=0.698$ comoving volume $2.72\,{\rm...
We analyse the baryon acoustic oscillation (BAO) signal of final Baryon Oscillation Spectroscopic Survey (BOSS) data release (DR12). Our analysis is performed in Fourier space, using power spectrum monopole and quadrupole. The set includes 1198 006 galaxies over redshift range 0.2 < z 0.75. divide this into three (overlapping) bins with effective redshifts zeff = 0.38, 0.51 0.61. demonstrate reliability our pipeline N-body simulations as well ∼1000 MultiDark-Patchy mock catalogues that mimic...
We present improved methodology for including covariance matrices in the error budget of Baryon Oscillation Spectroscopic Survey (BOSS) galaxy clustering measurements, revisiting Data Release 9 (DR9) analyses, and describing a method that is used DR10/11 analyses presented companion papers. The precise analysis adopted becoming increasingly important, due to precision BOSS can now reach: even using as many 600 mock catalogues estimate two-point measurements still lead an increase errors ∼20...
We explore the cosmological implications of anisotropic clustering measurements in configuration space final galaxy samples from Data Release 12 SDSS-III Baryon Oscillation Spectroscopic Survey. implement a new detailed modelling effects non-linearities, bias and redshift-space distortions that can be used to extract unbiased information our for scales $s \gtrsim 20\,h^{-1}{\rm Mpc}$. combined BOSS with latest cosmic microwave background (CMB) observations Type Ia supernovae found no...
Abstract The extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 sample includes 80,118 luminous red galaxies (LRGs). By combining these with the high-redshift tail of BOSS galaxy sample, we form a LRGs at an effective redshift z = 0.72, covering volume 0.9 Gpc 3 . We account for spurious fluctuations caused by targeting and failures, which were validated on set mock catalogs. This analysis is sufficient to provide 2.5% measurement spherically averaged baryon acoustic...
We present large-scale structure catalogs from the completed extended Baryon Oscillation Spectroscopic Survey (eBOSS). Derived Sloan Digital Sky (SDSS) -IV Data Release 16 (DR16), these provide data samples, corrected for observational systematics, and random positions sampling survey selection function. Combined, they allow clustering measurements suitable testing cosmological models. describe methods used to create eBOSS DR16 Luminous Red Galaxy (LRG) Quasar samples. The quasar catalog...
The imprint left on the cosmic microwave background (CMB) from CMB photons scattering off high-energy electrons in galaxies and clusters is known as Sunyaev-Zel'dovich (SZ) effect subject of these two papers Atacama Cosmology Telescope (ACT). ACT measurements combined with those Planck BOSS are shown to provide a rich picture electron gas thermodynamics galactic cluster medium. This can be used test improve cosmological simulations relevant for upcoming experiments.
Abstract The Dark Energy Spectroscopic Instrument (DESI) is currently measuring the spectra of 40 million galaxies and quasars, largest such survey ever made to probe nature cosmological dark energy. 4 m Mayall telescope at Kitt Peak National Observatory has been adapted for DESI, including construction a 3.°2 diameter prime focus corrector that focuses astronomical light onto 0.8 focal surface with excellent image quality over DESI bandpass 360–980 nm. wide-field includes six lenses, as...
Abstract We implement Crossing Statistics to reconstruct in a model-agnostic manner the expansion history of universe and properties dark energy, using DESI Data Release 1 (DR1) BAO data combination with one three different supernova compilations (PantheonPlus, Union3, DES-SN5YR) Planck CMB observations. Our results hint towards an evolving emergent energy behaviour, negligible presence at z ≳ 1, varying significance depending on sets combined. In all these reconstructions, cosmological...
ABSTRACT This paper provides a comprehensive overview of how fitting baryon acoustic oscillations (BAO) is carried out within the upcoming Dark Energy Spectroscopic Instrument’s (DESI) 2024 results using its DR1 data set, and associated systematic error budget from theory modelling BAO. We derive new showing non-linearities in clustering galaxies can cause potential biases measurements isotropic ($\alpha _{\mathrm{iso}}$) anisotropic _{\mathrm{ap}}$) BAO distance scales, these be effectively...
Abstract In anticipation of forthcoming data releases current and future spectroscopic surveys, we present the validation tests analysis systematic effects within velocileptors modeling pipeline when fitting mock from AbacusSummit N-body simulations. We compare constraints obtained parameter compression methods to direct (Full-Modeling) approaches galaxy power spectra, show that ShapeFit extension traditional template method is consistent with Full-Modeling standard ΛCDM space. dependence on...
Abstract We present the technical details on how large-scale structure (LSS) catalogs are constructed from redshifts measured spectra observed by Dark Energy Spectroscopic Instrument (DESI). The LSS provide information needed to determine relative number density of DESI tracers as a function redshift and celestial coordinates and, e.g., clustering statistics. produce that weighted subsamples data, each matched `random' catalog forms an unclustered sampling probability could have those data...