Search Results - "Roodman, A A"
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Dark Energy Survey Y3 results: blending shear and redshift biases in image simulations
Published in Monthly notices of the Royal Astronomical Society (01-01-2022)“…ABSTRACT As the statistical power of galaxy weak lensing reaches per cent level precision, large, realistic, and robust simulations are required to calibrate…”
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redMaGiC: selecting luminous red galaxies from the DES Science Verification data
Published in Monthly notices of the Royal Astronomical Society (11-09-2016)“…We introduce redMaGiC, an automated algorithm for selecting luminous red galaxies (LRGs). The algorithm was specifically developed to minimize photometric…”
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Cosmology constraints from shear peak statistics in Dark Energy Survey Science Verification data
Published in Monthly notices of the Royal Astronomical Society (21-12-2016)“…Shear peak statistics has gained a lot of attention recently as a practical alternative to the two-point statistics for constraining cosmological parameters…”
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Three new VHS–DES quasars at 6.7 < z < 6.9 and emission line properties at z > 6.5
Published in Monthly notices of the Royal Astronomical Society (01-08-2019)“…We report the results from a search for z > 6.5 quasars using the Dark Energy Survey (DES) Year 3 data set combined with the VISTA Hemisphere Survey (VHS) and…”
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Photometric redshift analysis in the Dark Energy Survey Science Verification data
Published in Monthly notices of the Royal Astronomical Society (01-12-2014)“…We present results from a study of the photometric redshift performance of the Dark Energy Survey (DES), using the early data from a Science Verification…”
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Testing the lognormality of the galaxy and weak lensing convergence distributions from Dark Energy Survey maps
Published in Monthly notices of the Royal Astronomical Society (01-04-2017)“…It is well known that the probability distribution function (PDF) of galaxy density contrast is approximately lognormal; whether the PDF of mass fluctuations…”
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Blinding multiprobe cosmological experiments
Published in Monthly notices of the Royal Astronomical Society (15-04-2020)“…ABSTRACT The goal of blinding is to hide an experiment’s critical results – here the inferred cosmological parameters – until all decisions affecting its…”
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Improving weak lensing mass map reconstructions using Gaussian and sparsity priors: application to DES SV
Published in Monthly notices of the Royal Astronomical Society (21-09-2018)“…Mapping the underlying density field, including non-visible dark matter, using weak gravitational lensing measurements is now a standard tool in cosmology. Due…”
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The DES view of the Eridanus supervoid and the CMB cold spot
Published in Monthly notices of the Royal Astronomical Society (17-12-2021)“…ABSTRACT The Cold Spot is a puzzling large-scale feature in the Cosmic Microwave Background temperature maps and its origin has been subject to active debate…”
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Brown dwarf census with the Dark Energy Survey year 3 data and the thin disc scale height of early L types
Published in Monthly notices of the Royal Astronomical Society (11-11-2019)“…ABSTRACT In this paper we present a catalogue of 11 745 brown dwarfs with spectral types ranging from L0 to T9, photometrically classified using data from the…”
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DESI complete calibration of the colour–redshift relation (DC3R2): results from early DESI data
Published in Monthly notices of the Royal Astronomical Society (03-06-2024)“…We present initial results from the Dark Energy Spectroscopic Instrument (DESI) complete calibration of the colour–redshift relation (DC3R2) secondary target…”
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Discovery of two gravitationally lensed quasars in the Dark Energy Survey
Published in Monthly notices of the Royal Astronomical Society (01-12-2015)“…We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey…”
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Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data
Published in Monthly notices of the Royal Astronomical Society (21-05-2015)“…We measure the weak lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy…”
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Galaxy bias from the Dark Energy Survey Science Verification data: combining galaxy density maps and weak lensing maps
Published in Monthly notices of the Royal Astronomical Society (01-07-2016)“…We measure the redshift evolution of galaxy bias for a magnitude-limited galaxy sample by combining the galaxy density maps and weak lensing shear maps for a…”
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Dark Energy Survey Year 1 Results: Wide-field mass maps via forward fitting in harmonic space
Published in Monthly notices of the Royal Astronomical Society (09-03-2020)“…ABSTRACT We present new wide-field weak lensing mass maps for the Year 1 Dark Energy Survey (DES) data, generated via a forward fitting approach. This method…”
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Revictimization rates and method variance: A meta-analysis
Published in Clinical psychology review (01-03-2001)“…The present meta-analytic review examined revictimization rates and sources of variance among rates provided by 19 empirical studies of adult females. In this…”
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Weak Gravitational Lensing around Low Surface Brightness Galaxies in the DES Year 3 Data
Published in The open journal of astrophysics (16-10-2024)“…We present galaxy-galaxy lensing measurements using a sample of low surface brightness galaxies (LSBGs) drawn from the Dark Energy Survey Year 3 (Y3) data as…”
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Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
Published in The Astronomical journal (01-11-2022)“…Abstract The Dark Energy Spectroscopic Instrument (DESI) embarked on an ambitious 5 yr survey in 2021 May to explore the nature of dark energy with…”
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STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408−5354
Published in Monthly notices of the Royal Astronomical Society (01-06-2020)“…ABSTRACT We present a blind time-delay cosmographic analysis for the lens system DES J0408−5354. This system is extraordinary for the presence of two sets of…”
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The Dark Energy Survey: more than dark energy – an overview
Published in Monthly notices of the Royal Astronomical Society (01-08-2016)“…This overview paper describes the legacy prospect and discovery potential of the Dark Energy Survey (DES) beyond cosmological studies, illustrating it with…”
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