S. R. Hinton
A5006682145- Galaxies: Formation, Evolution, Phenomena
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- CCD and CMOS Imaging Sensors
- Adaptive optics and wavefront sensing
- Gaussian Processes and Bayesian Inference
- Remote Sensing in Agriculture
- Astro and Planetary Science
- Pulsars and Gravitational Waves Research
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Impact of Light on Environment and Health
- Statistical and numerical algorithms
- Geophysics and Gravity Measurements
- Scientific Research and Discoveries
- Advanced Vision and Imaging
- Particle physics theoretical and experimental studies
- Isotope Analysis in Ecology
- Planetary Science and Exploration
The University of Queensland
2016-2025
Fermi National Accelerator Laboratory
2024
Indian Institute of Technology Hyderabad
2024
Campbell Collaboration
2021
Stanford University
2015-2020
ARC Centre of Excellence for All-sky Astrophysics
2015-2018
Deutsches Elektronen-Synchrotron DESY
2018
Australian National University
1998-2017
We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg$^2$ $griz$ imaging data the first year Dark Energy Survey (DES Y1). combine three two-point functions: (i) cosmic shear correlation function 26 million source galaxies in four redshift bins, (ii) angular autocorrelation 650,000 luminous red five (iii) galaxy-shear cross-correlation positions shears. To demonstrate robustness these results, we use independent pairs...
We present the first cosmology results from large-scale structure in Dark Energy Survey (DES) spanning 5000 deg$^2$. perform an analysis combining three two-point correlation functions (3$\times$2pt): (i) cosmic shear using 100 million source galaxies, (ii) galaxy clustering, and (iii) cross-correlation of with lens positions. The was designed to mitigate confirmation or observer bias; we describe specific changes made sample following unblinding results. model data within flat $\Lambda$CDM...
We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift $z=0.001$ to 2.26. This work features an increased sample size, span, and improved treatment systematic uncertainties comparison original Pantheon results a factor two improvement constraining power. For Flat$\Lambda$CDM model, we find $\Omega_M=0.334\pm0.018$ SNe alone. Flat$w_0$CDM measure $w_0=-0.90\pm0.14$ alone, H$_0=73.5\pm1.1$...
Abstract We describe the first public data release of Dark Energy Survey, DES DR1, consisting reduced single-epoch images, co-added source catalogs, and associated products services assembled over 3 yr science operations. DR1 is based on optical/near-infrared imaging from 345 distinct nights (2013 August to 2016 February) by Camera mounted 4 m Blanco telescope at Cerro Tololo Inter-American Observatory in Chile. wide-area survey covering ∼5000 deg 2 southern Galactic cap five broad...
ChainConsumer is a python package written to consume the output chains of Monte-Carlo processes and fitting algorithms, such as results MCMC.
We perform a comprehensive study of Milky Way (MW) satellite galaxies to constrain the fundamental properties dark matter (DM). This analysis fully incorporates inhomogeneities in spatial distribution and detectability MW satellites marginalizes over uncertainties mapping between DM halos, system, disruption subhalos by disk. Our results are consistent with cold, collisionless paradigm yield strongest cosmological constraints date on particle models warm, interacting, fuzzy matter. At 95%...
We present an improved measurement of the Hubble constant (H_0) using 'inverse distance ladder' method, which adds information from 207 Type Ia supernovae (SNe Ia) Dark Energy Survey (DES) at redshift 0.018 < z 0.85 to existing measurements 122 low (z 0.07) SNe (Low-z) and Baryon Acoustic Oscillations (BAOs). Whereas traditional H_0 with use a ladder parallax Cepheid variable stars, inverse relies on absolute BAOs calibrate intrinsic magnitude Ia. find = 67.8 +/- 1.3 km s-1 Mpc-1...
We describe the derivation and validation of redshift distribution estimates their uncertainties for populations galaxies used as weak-lensing sources in Dark Energy Survey (DES) Year 1 cosmological analyses. The Bayesian Photometric Redshift (bpz) code is to assign four bins between z ≈ 0.2 ≈1.3, produce initial lensing-weighted distributions |$n^i_{\rm PZ}(z)\propto \mathrm{d}n^i/\mathrm{d}z$| members bin i. Accurate determination parameters depends critically on knowledge ni, but...
We describe the Dark Energy Survey (DES) photometric data set assembled from first three years of science operations to support DES Year 3 cosmology analyses, and provide usage notes aimed at broad astrophysics community. Y3 Gold improves on previous releases DES, Y1 Data Release 1 (DES DR1), presenting an expanded curated that incorporates algorithmic developments in image detrending processing, calibration, object classification. comprises nearly 5000 square degrees grizY imaging south...
The population of Milky Way (MW) satellites contains the faintest known galaxies and thus provides essential insight into galaxy formation dark matter microphysics. Here we combine a model galaxy--halo connection with newly derived observational selection functions based on searches for in photometric surveys over nearly entire high Galactic latitude sky. In particular, use cosmological zoom-in simulations MW-like halos that include realistic Large Magellanic Cloud (LMC) analogs to fit...
ABSTRACT We present and characterize the galaxy shape catalogue from first 3 yr of Dark Energy Survey (DES) observations, over an effective area 4143 deg2 southern sky. describe our data analysis process self-calibrating shear measurement pipeline metacalibration, which builds improves upon used in DES Year 1 several aspects. The weak-lensing consists 100 204 026 galaxies, measured riz bands, resulting a weighted source number density neff = 5.59 gal arcmin−2 corresponding noise σe 0.261....
Determining the distribution of redshifts galaxies observed by wide-field photometric experiments like Dark Energy Survey is an essential component to mapping matter density field with gravitational lensing. In this work we describe methods used assign individual weak lensing source from Year 3 Weak Lensing Source Catalogue four tomographic bins and estimate redshift distributions in these bins. As first application data, validate that assumptions made apply DES Y3 develop a full treatment...
The authors use Dark Energy Survey data on galaxy clustering and lensing from the first three years of observations combined with five prominent external datasets. They robustly constrain six potential extensions to currently prevalent cosmological paradigm \ensuremath{\Lambda}CDM (Cold Matter a constant). All would add significant new physics, such as deviations General Relativity or non-zero spatial curvature, but no evidence for physics is found.
Abstract We present cosmological constraints from the sample of Type Ia supernovae (SNe Ia) discovered and measured during full 5 yr Dark Energy Survey (DES) SN program. In contrast to most previous samples, in which SNe are classified based on their spectra, we classify DES using a machine learning algorithm applied light curves four photometric bands. Spectroscopic redshifts acquired dedicated follow-up survey host galaxies. After accounting for likelihood each being an Ia, find 1635...
We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during full five years Dark Energy Survey (DES) Supernova Program. In contrast to most previous samples, in which SN are classified based on their spectra, we classify DES SNe using a machine learning algorithm applied light curves four photometric bands. Spectroscopic redshifts acquired dedicated follow-up survey host galaxies. After accounting for likelihood each being Ia, find 1635 redshift range...
We present a catalog of 689 galaxy cluster candidates detected at significance $\xi>4$ via their thermal Sunyaev-Zel'dovich (SZ) effect signature in 95 and 150 GHz data from the 500-square-degree SPTpol survey. use optical infrared Dark Energy Camera Wide-field Infrared Survey Explorer (WISE) Spitzer satellites, to confirm 544 these as clusters with $\sim94\%$ purity. The sample has an approximately redshift-independent mass threshold redshift $z>0.25$ spans $1.5 \times 10^{14} < M_{500c} 9...
ABSTRACT We measure the current expansion rate of Universe, Hubble’s constant $H_0$, by calibrating absolute magnitudes supernovae to distances measured baryon acoustic oscillations (BAO). This ‘inverse distance ladder’ technique provides an alternative using nearby measurements, replacing calibration with a high-redshift anchor. use recent release 1829 from Dark Energy Survey spanning $0.01\lt z\lt 1.13$ anchored oscillation measurements Spectroscopic Instrument (DESI) $0.30 \lt...
We measure the clustering of DES Year 1 galaxies that are intended to be combined with weak lensing samples in order produce precise cosmological constraints from joint analysis large-scale structure and correlations. Two-point correlation functions measured for a sample $6.6 \times 10^{5}$ luminous red selected using \textsc{redMaGiC} algorithm over an area $1321$ square degrees, redshift range $0.15 < z 0.9$, split into five tomographic bins. The has mean uncertainty $\sigma_{z}/(1+z) =...
We present the results of a search for rapidly evolving transients in Dark Energy Survey Supernova Programme. These events are characterized by fast light-curve evolution (rise to peak ≲10 d and exponential decline ≲30 after peak). discovered 72 events, including 37 with spectroscopic redshift from host galaxy spectral features. The increase total number rapid optical more than factor two. They found at wide range redshifts (0.05 < |$z$| 1.56) brightnesses (−15.75 > Mg −22.25). multiband...
We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample 207 spectroscopically confirmed SNe three years DES-SN, combined with low-redshift sample 122 literature. Our "DES-SN3YR" result these 329 is based on series companion analyses and improvements covering SN discovery, spectroscopic selection, photometry, calibration, distance bias corrections, evaluation...
We present a measurement of the Hubble constant $H_0$ using gravitational wave (GW) event GW190814, which resulted from coalescence 23 $M_\odot$ black hole with 2.6 compact object, as standard siren. No compelling electromagnetic counterpart has been identified for this event, thus our analysis accounts thousands potential host galaxies within statistical framework. The redshift information is obtained photometric (photo-$z$) catalog Dark Energy Survey. luminosity distance provided by...
OzDES is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim to measure redshifts of approximately 2,500 Type Ia supernovae host galaxies over redshift range 0.1 < z 1.2, and derive reverberation-mapped black hole masses for 500 active galactic nuclei quasars 0.3 4.5. This treasure trove data forms major part follow-up Dark Energy Survey which we are also targeting cluster galaxies, radio strong lenses, unidentified transients, as well measuring...
We present improved photometric measurements for the host galaxies of 206 spectroscopically confirmed type Ia supernovae discovered by Dark Energy Survey Supernova Program (DES-SN) and used in first DES-SN cosmological analysis. Fitting spectral energy distributions to $griz$ galaxies, we derive stellar masses star-formation rates. For sample, when considering a 5D ($z$, $x_1$, $c$, $α$, $β$) bias correction, find evidence Hubble residual `mass step', where SNe high mass ($>10^{10}...