Florian Beutler
A5024877946- Galaxies: Formation, Evolution, Phenomena
- Cosmology and Gravitation Theories
- Astronomy and Astrophysical Research
- Radio Astronomy Observations and Technology
- Scientific Research and Discoveries
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Black Holes and Theoretical Physics
- Adaptive optics and wavefront sensing
- Computational Physics and Python Applications
- Particle physics theoretical and experimental studies
- Gaussian Processes and Bayesian Inference
- High-Energy Particle Collisions Research
- Target Tracking and Data Fusion in Sensor Networks
- Astronomical Observations and Instrumentation
- Pulsars and Gravitational Waves Research
- Indoor and Outdoor Localization Technologies
- Quantum Chromodynamics and Particle Interactions
- Geophysics and Gravity Measurements
- Remote Sensing in Agriculture
- Spectroscopy and Chemometric Analyses
- Solar and Space Plasma Dynamics
- Climate variability and models
Royal Observatory
2020-2025
University of Edinburgh
2020-2025
Netherlands Institute for Radio Astronomy
2024-2025
UK Astronomy Technology Centre
2023-2024
University of Chinese Academy of Sciences
2023
Lawrence Berkeley National Laboratory
2012-2020
University of Portsmouth
2014-2020
University of California, Berkeley
2016
The University of Western Australia
2011-2015
International Centre for Radio Astronomy Research
2011-2015
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 analyse the large-scale correlation function of 6dF Galaxy Survey (6dFGS) and detect a Baryon Acoustic Oscillation (BAO) signal. The 6dFGS BAO detection allows us to constrain distance-redshift relation at z_{\rm eff} = 0.106. achieve distance measure D_V(z_{\rm eff}) 456\pm27 Mpc measurement ratio, r_s(z_d)/D_V(z_{\rm 0.336\pm0.015 (4.5% precision), where r_s(z_d) is sound horizon drag epoch z_d. low effective redshift makes it competitive independent alternative Cepheids low-z...
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)...
The third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using original SDSS wide-field imager, and an upgraded multi-object fiber-fed optical spectrograph, a new near-infrared high-resolution novel interferometer. All SDSS-III are now made public. In particular, this paper describes Data Release 11 (DR11) including all acquired through 2013 July, 12 (DR12) adding July (including included in previous releases), marking end observing. Relative our public...
Abstract We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands Milky Way stars at high resolution and signal-to-noise ratios in near-infrared. Mapping Nearby Galaxies (MaNGA) survey obtaining spatially resolved spectroscopy for nearby galaxies (median <?CDATA $z\sim 0.03$?> ). extended Baryon Oscillation Spectroscopic (eBOSS)...
Abstract The DESI Legacy Imaging Surveys ( http://legacysurvey.org/ ) are a combination of three public projects (the Dark Energy Camera Survey, the Beijing–Arizona Sky and Mayall z -band Survey) that will jointly image ≈14,000 deg 2 extragalactic sky visible from northern hemisphere in optical bands g , r using telescopes at Kitt Peak National Observatory Cerro Tololo Inter-American Observatory. combined survey footprint is split into two contiguous areas by Galactic plane. imaging...
We present measurements of the baryon acoustic peak at redshifts z = 0.44, 0.6 and 0.73 in galaxy correlation function final dataset WiggleZ Dark Energy Survey. combine our with lower-redshift from 6-degree Field Galaxy Survey Sloan Digital Sky Survey, producing a stacked survey which statistical significance detection is 4.9-sigma relative to zero-baryon model no peak. fit cosmological models this combined oscillation (BAO) comprising six distance-redshift data points, compare results...
The Sloan Digital Sky Survey (SDSS) has been in operation since 2000 April. This paper presents the Tenth Public Data Release (DR10) from its current incarnation, SDSS-III. data release includes first spectroscopic Apache Point Observatory Galaxy Evolution Experiment (APOGEE), along with Baryon Oscillation Spectroscopic (BOSS) taken through 2012 July. APOGEE instrument is a near-infrared R ∼ 22,500 300 fiber spectrograph covering 1.514–1.696 μm. survey studying chemical abundances and radial...
This paper documents the seventeenth data release (DR17) from Sloan Digital Sky Surveys; fifth and final fourth phase (SDSS-IV). DR17 contains complete of Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal surveying over 10,000 nearby galaxies. The MaNGA Stellar Library (MaStar) accompanies this data, providing observations almost 30,000 stars through instrument during bright time. also Galactic Evolution Experiment 2 (APOGEE-2) survey publicly...
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes second data release from this phase, and 14th SDSS overall (making Data Release Fourteen or DR14). makes taken by SDSS-IV its first two years (2014–2016 July) public. Like all previous releases, DR14 is cumulative, including most recent reductions calibrations phase began operations 2000. New public extended Baryon Oscillation Spectroscopic Survey; Apache Point...
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%...
We measure the large-scale cross-correlation of quasars with Lyman alpha forest absorption, using over 164,000 from Data Release 11 SDSS-III Baryon Oscillation Spectroscopic Survey. extend previous study roughly 60,000 9 to larger separations, allowing a measurement Baryonic Acoustic (BAO) scale along line sight $c/(H(z=2.36) ~ r_s) = 9.0 \pm 0.3$ and across $D_A(z=2.36) / r_s 10.8 0.4$, consistent CMB other BAO data. Using best fit value sound horizon Planck data ($r_s=147.49 Mpc$), we can...
We present a detailed analysis of redshift-space distortions in the two-point correlation function 6dF Galaxy Survey (6dFGS).The K-band selected subsample which we employ this study contains 81 971 galaxies distributed over 17 000 degree 2 with an effective redshift z eff = 0.067.By modelling 2D galaxy function, ξ (r p , π), measure parameter combination f (z )σ 8 ) 0.423 ± 0.055, where
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...
The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations be simultaneous with Time Domain (TDSS) designed for variability studies and Identification of eROSITA Sources (SPIDERS) program X-ray sources. eBOSS use four different tracers to measure distance-redshift relation baryon acoustic oscillations (BAO). Using more than 250,000 new, spectroscopically confirmed luminous red...
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...
Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by fourth phase of SDSS (SDSS-IV) across its three operation (July 2014-July 2017). This is third SDSS-IV, and fifteenth from (Data Release Fifteen; DR15). New come MaNGA - 4824 datacubes, as well stellar spectra in Stellar Library (MaStar), set survey-supported analysis products (e.g. gas kinematics, emission line, other maps) Data Analysis Pipeline (DAP), a new visualisation...
The Effective Field Theory of Large-Scale Structure (EFTofLSS) is a formalism that allows us to predict the clustering Cosmological in mildly non-linear regime an accurate and reliable way. After validating our technique against several sets numerical simulations, we perform analysis for cosmological parameters DR12 BOSS data. We assume $\Lambda$CDM, fixed value baryon/dark-matter ratio, $\Omega_b/\Omega_c$, tilt primordial power spectrum, $n_s$, no significant input from simulations. By...
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...
This paper documents the sixteenth data release (DR16) from Sloan Digital Sky Surveys; fourth and penultimate phase (SDSS-IV). is first of southern hemisphere survey Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new APOGEE-2 North are also included. DR16 notable as final for main cosmological program Extended Baryon Oscillation Spectroscopic Survey (eBOSS), all raw reduced spectra that project released here. includes Time Domain (TDSS) SPectroscopic IDentification...
We analyse the anisotropic clustering of Baryon Oscillation Spectroscopic Survey (BOSS) CMASS Data Release 11 (DR11) sample, which consists $690\,827$ galaxies in redshift range $0.43 < z 0.7$ and has a sky coverage $8\,498\,\text{deg}^2$. perform our analysis Fourier space using power spectrum estimator suggested by Yamamoto et al. (2006). measure multipole spectra self-consistent manner for first time sense that we provide proper way to treat survey window function integral constraint,...
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...
We use the observed anisotropic clustering of galaxies in Baryon Oscillation Spectroscopic Survey Data Release 11 CMASS sample to measure linear growth rate structure, Hubble expansion and comoving distance scale. Our covers 8498 deg2 encloses an effective volume 6 Gpc3 at redshift |$\bar{z} = 0.57$|. find fσ8 0.441 ± 0.044, H 93.1 3.0 km s−1 Mpc−1 DA 1380 23 Mpc when fitting simultaneously. When we fix background one predicted by spatially flat Λ cold dark matter (ΛCDM) model agreement...
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...