David Bacon
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View article: OzDES Reverberation Mapping of Active Galactic Nuclei: Final Data Release, Black-Hole Mass Results, & Scaling Relations
OzDES Reverberation Mapping of Active Galactic Nuclei: Final Data Release, Black-Hole Mass Results, & Scaling Relations Open
Over the last decade, the Australian Dark Energy (OzDES) collaboration has used Reverberation Mapping to measure the masses of high redshift supermassive black holes. Here we present the final review and analysis of this OzDES reverberatio…
View article: OzDES Reverberation Mapping Program: CIV lags from six years of data
OzDES Reverberation Mapping Program: CIV lags from six years of data Open
We present 29 successfully recovered CIV time lags in Active Galactic Nuclei from the complete Dark Energy Survey Reverberation Mapping campaign. The AGN in this sample span a redshift range of 1.9
View article: DELVE Milky Way Satellite Census I: Satellite Population and Survey Selection Function
DELVE Milky Way Satellite Census I: Satellite Population and Survey Selection Function Open
The properties of Milky Way satellite galaxies have important implications for galaxy formation, reionization, and the fundamental physics of dark matter. However, the population of Milky Way satellites includes the faintest known galaxies…
View article: Dark Energy Survey Year 6 Results: improved mitigation of spatially varying observational systematics with masking
Dark Energy Survey Year 6 Results: improved mitigation of spatially varying observational systematics with masking Open
As photometric surveys reach unprecedented statistical precision, systematic uncertainties increasingly dominate large-scale structure probes relying on galaxy number density. Defining the final survey footprint is critical, as it excludes…
View article: DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg$^2$ View of Cosmic Structure from 270 Million Galaxies
DECADE+DES Y3 Weak Lensing Mass Map: A 13,000 deg$^2$ View of Cosmic Structure from 270 Million Galaxies Open
We present the largest galaxy weak lensing mass map of the late-time Universe, reconstructed from 270 million galaxies in the DECADE and DES Year 3 datasets, covering 13,000 square degrees. We validate the map through systematic tests agai…
View article: The Atacama Cosmology Telescope: DR6 Sunyaev-Zel'dovich Selected Galaxy Clusters Catalog
The Atacama Cosmology Telescope: DR6 Sunyaev-Zel'dovich Selected Galaxy Clusters Catalog Open
We present the results of a search for galaxy clusters in the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) microwave sky maps covering 16293 square degrees in three frequency bands, using data obtained over the lifetime of the pr…
View article: Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlations with luminous red galaxies from eBOSS
Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlations with luminous red galaxies from eBOSS Open
We cross-correlated galaxies from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) second data release (DR2) radio source with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) luminous red galaxy (LRG) sample to ext…
View article: Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlations with luminous red galaxies from eBOSS
Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlations with luminous red galaxies from eBOSS Open
Aims. We cross-correlated galaxies from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) second data release (DR2) radio source with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) luminous red galaxy (LRG) sample …
View article: The Dark Energy Survey Supernova Program: an updated measurement of the Hubble constant using the inverse distance ladder
The Dark Energy Survey Supernova Program: an updated measurement of the Hubble constant using the inverse distance ladder Open
We measure the current expansion rate of the Universe, Hubble’s constant $H_0$, by calibrating the absolute magnitudes of supernovae to distances measured by baryon acoustic oscillations (BAO). This ‘inverse distance ladder’ technique prov…
View article: Fast Radio Bursts and Artificial Neural Networks: a cosmological-model-independent estimation of the Hubble constant
Fast Radio Bursts and Artificial Neural Networks: a cosmological-model-independent estimation of the Hubble constant Open
Fast Radio Bursts (FRBs) have emerged as powerful cosmological probes in recent years offering valuable insights into cosmic expansion. These predominantly extragalactic transients encode information on the expansion of the Universe throug…
View article: Copacabana: a probabilistic membership assignment method for galaxy clusters
Copacabana: a probabilistic membership assignment method for galaxy clusters Open
Cosmological analyses using galaxy clusters in optical/near-infrared photometric surveys require robust characterization of their galaxy content. Precisely determining which galaxies belong to a cluster is crucial. In this paper, we presen…
View article: Environmental Quenching of Low-surface-brightness Galaxies Near Hosts from Large Magellanic Cloud to Milky Way Mass Scales
Environmental Quenching of Low-surface-brightness Galaxies Near Hosts from Large Magellanic Cloud to Milky Way Mass Scales Open
Low-surface-brightness galaxies (LSBGs) are excellent probes of quenching and other environmental processes near massive galaxies. We study an extensive sample of LSBGs near massive hosts in the local universe that are distributed across a…
View article: The Dark Energy Survey Supernova Program: Light Curves and 5 Yr Data Release
The Dark Energy Survey Supernova Program: Light Curves and 5 Yr Data Release Open
We present griz photometric light curves for the full 5 yr of the Dark Energy Survey Supernova (DES-SN) program, obtained with both forced point-spread function photometry on difference images ( DiffImg ) performed during survey operations…
View article: <i>Euclid</i>
<i>Euclid</i> Open
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025…
View article: Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback
Weak lensing combined with the kinetic Sunyaev–Zel’dovich effect: a study of baryonic feedback Open
Extracting precise cosmology from weak lensing surveys requires modelling the non-linear matter power spectrum, which is suppressed at small scales due to baryonic feedback processes. However, hydrodynamical galaxy formation simulations ma…
View article: The Dark Energy Survey Supernova Program: slow supernovae show cosmological time dilation out to <i>z</i> ~ 1.
The Dark Energy Survey Supernova Program: slow supernovae show cosmological time dilation out to <i>z</i> ~ 1. Open
We present a precise measurement of cosmological time dilation using the light curves of 1504 Type Ia supernovae from the Dark Energy Survey spanning a redshift range $0.1\lesssim z\lesssim 1.2$. We find that the width of supernova light c…
View article: Reduction of the type Ia supernova host galaxy step in the outer regions of galaxies
Reduction of the type Ia supernova host galaxy step in the outer regions of galaxies Open
Using 1533 type Ia supernovae (SNe Ia) from the five-year sample of the Dark Energy Survey (DES), we investigate the relationship between the projected galactocentric separation of the SNe and their host galaxies and their light curves and…
View article: Dark energy survey year 3 results: miscentring calibration and X-ray-richness scaling relations in redMaPPer clusters
Dark energy survey year 3 results: miscentring calibration and X-ray-richness scaling relations in redMaPPer clusters Open
We use Dark Energy Survey Year 3 (DES Y3) clusters with archival XMM–Newton and Chandra X-ray data to assess the centring performance of the redMaPPer cluster finder and to measure key richness observable scaling relations. We find that 10…
View article: Fast Radio Bursts and Artificial Neural Networks: a cosmological-model-independent estimation of the Hubble Constant
Fast Radio Bursts and Artificial Neural Networks: a cosmological-model-independent estimation of the Hubble Constant Open
Fast Radio Bursts (FRBs) have emerged as powerful cosmological probes in recent years offering valuable insights into cosmic expansion. These predominantly extragalactic transients encode information on the expansion of the Universe throug…
View article: The feasibility of weak lensing and 21cm intensity mapping cross-correlation measurements
The feasibility of weak lensing and 21cm intensity mapping cross-correlation measurements Open
One of the most promising probes to complement current standard cosmological surveys is the H i intensity map, i.e. the distribution of temperature fluctuations in neutral hydrogen. In this paper we present calculations of the two-point fu…
View article: The feasibility of weak lensing and 21cm intensity mapping cross-correlation measurements
The feasibility of weak lensing and 21cm intensity mapping cross-correlation measurements Open
One of the most promising probes to complement current standard cosmological surveys is the HI intensity map, i.e. the distribution of temperature fluctuations in neutral hydrogen. In this paper we present calculations of the 2-point funct…
View article: The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes
The dark energy survey: detection of weak lensing magnification of supernovae and constraints on dark matter haloes Open
The residuals of the distance moduli of Type Ia supernovae (SNe Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the Universe, due to weak lensing magnification by foreground matter. By correlating the re…
View article: A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure
A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure Open
We perform a multitracer full-shape analysis in Fourier space based on the effective field theory of large-scale structure (EFTofLSS) using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey…
View article: SPT-SZ MCMF: an extension of the SPT-SZ catalogue over the DES region
SPT-SZ MCMF: an extension of the SPT-SZ catalogue over the DES region Open
We present an extension to a Sunyaev–Zel’dovich Effect (SZE) selected cluster catalogue based on observations from the South Pole Telescope (SPT); this catalogue extends to lower signal to noise than the previous SPT–SZ catalogue and there…
View article: The Dark Energy Survey Supernova Program: Investigating\n Beyond-$\\Lambda$CDM
The Dark Energy Survey Supernova Program: Investigating\n Beyond-$\\Lambda$CDM Open
We report constraints on a variety of non-standard cosmological models using\nthe full 5-year photometrically-classified type Ia supernova sample from the\nDark Energy Survey (DES-SN5YR). Both Akaike Information Criterion (AIC) and\nSuspic…
View article: The Dark Energy Survey Supernova Program: Slow supernovae show cosmological time dilation out to $z \sim 1$
The Dark Energy Survey Supernova Program: Slow supernovae show cosmological time dilation out to $z \sim 1$ Open
We present a precise measurement of cosmological time dilation using the light curves of 1504 type Ia supernovae from the Dark Energy Survey spanning a redshift range $0.1\lesssim z\lesssim 1.2$. We find that the width of supernova light c…
View article: Flexion in gravitation and cosmology
Flexion in gravitation and cosmology Open
Cosmic flexion, like cosmic shear, is a weak gravitational lensing correlation function whose signal originates from the large-scale structure of the Universe. Building on the observational success of cosmic shear, along with the unprecede…
View article: OzDES Reverberation Mapping Program: Stacking analysis with Hβ, Mg <scp>ii</scp>, and C <scp>iv</scp>
OzDES Reverberation Mapping Program: Stacking analysis with Hβ, Mg <span>ii</span>, and C <span>iv</span> Open
Reverberation mapping is the leading technique used to measure direct black hole masses outside of the local Universe. Additionally, reverberation measurements calibrate secondary mass-scaling relations used to estimate single-epoch virial…
View article: Dark Energy Survey Year 6 results: Intra-cluster light from redshift 0.2 to 0.5
Dark Energy Survey Year 6 results: Intra-cluster light from redshift 0.2 to 0.5 Open
Using the full 6 years of imaging data from the Dark Energy Survey, we study the surface brightness profiles of galaxy cluster central galaxies and intra-cluster light. We apply a ‘stacking’ method to over 4000 galaxy clusters identified b…