David J. Brooks
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View article: Dark Energy Survey Year 3 results: Simulation-based $w$CDM inference from weak lensing and galaxy clustering maps with deep learning. I. Analysis design
Dark Energy Survey Year 3 results: Simulation-based $w$CDM inference from weak lensing and galaxy clustering maps with deep learning. I. Analysis design Open
Data-driven approaches using deep learning are emerging as powerful techniques to extract non-Gaussian information from cosmological large-scale structure. This work presents the first simulation-based inference (SBI) pipeline that combine…
View article: Enhancing DESI DR1 full-shape analyses using HOD-informed priors
Enhancing DESI DR1 full-shape analyses using HOD-informed priors Open
We present an analysis of DESI Data Release 1 (DR1) that incorporates Halo Occupation Distribution (HOD)-informed priors into Full-Shape (FS) modeling of the power spectrum based on cosmological perturbation theory (PT). By leveraging phys…
View article: DESI DR1 Ly <i>α</i> 1D power spectrum: the Fast Fourier Transform estimator measurement
DESI DR1 Ly <i>α</i> 1D power spectrum: the Fast Fourier Transform estimator measurement Open
We present the one-dimensional Lyman- α forest power spectrum measurement derived from the data release 1 (DR1) of the Dark Energy Spectroscopic Instrument (DESI). The measurement of the Lyman- α forest power spectrum along the line of sig…
View article: Extended dark energy analysis using DESI DR2 BAO measurements
Extended dark energy analysis using DESI DR2 BAO measurements Open
We conduct an extended analysis of dark energy constraints, in support of the findings of the Dark Energy Spectroscopic Instrument (DESI) second data release cosmology key paper, including DESI data, Planck cosmic microwave background obse…
View article: Cosmology from Planck CMB lensing and DESI DR1 quasar tomography
Cosmology from Planck CMB lensing and DESI DR1 quasar tomography Open
We present a measurement of the amplitude of matter fluctuations over the redshift range 0.8 ≤ z ≤ 3.5 from the cross correlation of over 1.2 million spectroscopic quasars selected by the Dark Energy Spectroscopic Instrument (DESI) across …
View article: Clustering analysis of medium-band selected high-redshift galaxies
Clustering analysis of medium-band selected high-redshift galaxies Open
Next-generation large-scale structure spectroscopic surveys will probe cosmology at high redshifts $(2.3 < z < 3.5)$, relying on abundant galaxy tracers such as Ly$α$ emitters (LAEs) and Lyman break galaxies (LBGs). Medium-band photometry …
View article: Exploring HOD-dependent systematics for the DESI 2024 Full-Shape galaxy clustering analysis
Exploring HOD-dependent systematics for the DESI 2024 Full-Shape galaxy clustering analysis Open
We analyse the robustness of the DESI 2024 cosmological inference from the full shape of the galaxy power spectrum to uncertainties in the Halo Occupation Distribution (HOD) model of the galaxy-halo connection and the choice of priors on n…
View article: Inference of matter power spectrum at z=0 using DESI DR1 Full-Shape data
Inference of matter power spectrum at z=0 using DESI DR1 Full-Shape data Open
Measurements of galaxy distributions at large cosmic distances capture clustering from the past. In this study, we use a cosmological model to translate these observations into the present-day galaxy distribution. Specifically, we reconstr…
View article: Reconstructing Quasar Spectra and Measuring the Ly$α$ Forest with ${\rm S{\scriptsize pender}Q}$
Reconstructing Quasar Spectra and Measuring the Ly$α$ Forest with ${\rm S{\scriptsize pender}Q}$ Open
Quasar spectra carry the imprint of foreground intergalactic medium (IGM) through absorption features. In particular, absorption caused by neutral hydrogen gas, the ``Ly$α$ forest,'' is a key spectroscopic tracer for cosmological analyses …
View article: CHARACTERIZING IMMUNE CELL SUBSETS AND INTERFERON IN THE KIDNEYS OF SLE PATIENTS
CHARACTERIZING IMMUNE CELL SUBSETS AND INTERFERON IN THE KIDNEYS OF SLE PATIENTS Open
O020 / #593 Topic: AS16 - Lupus Nephritis-Pathogenesis ABSTRACT CONCURRENT SESSION 03: INNATE AND ADAPTIVE IMMUNITY IN SLE 22-05-2025 1:40 PM - 2:40 PM Background/Purpose 20-65% of patients with systemic lupus erythematosus (SLE) will deve…
View article: PAC in DESI. I. Galaxy stellar mass function into the 106 M⊙ frontier
PAC in DESI. I. Galaxy stellar mass function into the 106 M⊙ frontier Open
The Photometric objects Around Cosmic webs (PAC) method integrates cosmological photometric and spectroscopic surveys, offering valuable insights into galaxy formation. PAC measures the excess surface density of photometric objects, $\bar{…
View article: The DESI One-Percent Survey: Modelling the clustering and halo occupation of all four DESI tracers with UCHUU
The DESI One-Percent Survey: Modelling the clustering and halo occupation of all four DESI tracers with UCHUU Open
We present results from a set of mock lightcones for the DESI One-Percent Survey, created from the U CHUU simulation. This 8 h −3 Gpc 3 N -body simulation comprises 2.1 trillion particles and provides high-resolution dark matter (sub)haloe…
View article: DESI peculiar velocity survey – Fundamental Plane
DESI peculiar velocity survey – Fundamental Plane Open
The Dark Energy Spectroscopic Instrument (DESI) peculiar velocity survey aims to measure the peculiar velocities of early- and late-type galaxies within the DESI footprint using both the Fundamental Plane and optical Tully–Fisher relations…
View article: Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel'dovich effect from DESI Y1 x ACT
Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel'dovich effect from DESI Y1 x ACT Open
The gas density profile around galaxies, shaped by feedback and affecting the galaxy lensing signal, is imprinted on the cosmic microwave background (CMB) by the kinematic Sunyaev-Zel'dovich effect (kSZ). We precisely measure this effect (…
View article: Analytical and EZmock covariance validation for the DESI 2024 results
Analytical and EZmock covariance validation for the DESI 2024 results Open
The estimation of uncertainties in cosmological parameters is an important challenge in Large-Scale-Structure (LSS) analyses. For standard analyses such as Baryon Acoustic Oscillations (BAO) and Full-Shape two approaches are usually consid…
View article: Data Release 1 of the Dark Energy Spectroscopic Instrument
Data Release 1 of the Dark Energy Spectroscopic Instrument Open
Data Release 1 (DR1) of the Dark Energy Spectroscopic Instrument (DESI) includes the first 13 months of the DESI main survey as well as a uniform reprocessing of the Survey Validation data previously released in the Early Data Release. The…
View article: A one-week reduced-carbohydrate diet to mitigate iatrogenic peripheral hyperinsulinemia does not improve insulin sensitivity or endothelial function in a randomized, crossover trial in patients with type 1 diabetes
A one-week reduced-carbohydrate diet to mitigate iatrogenic peripheral hyperinsulinemia does not improve insulin sensitivity or endothelial function in a randomized, crossover trial in patients with type 1 diabetes Open
Background Iatrogenic peripheral hyperinsulinemia, resulting from peripheral insulin administration in type 1 diabetes, may increase insulin resistance and impair endothelial function. We hypothesized that lowering iatrogenic peripheral hy…
View article: Locus coeruleus neuromelanin, cognitive dysfunction, and brain metabolism in multiple system atrophy
Locus coeruleus neuromelanin, cognitive dysfunction, and brain metabolism in multiple system atrophy Open
Background Cognitive dysfunction is increasingly recognized in multiple system atrophy (MSA). Locus coeruleus (LC) integrity is associated with cognitive performance both in healthy controls (HC) and neurodegenerative conditions such as Pa…
View article: DESI Strong Lens Foundry I: HST Observations and Modeling with GIGA-Lens
DESI Strong Lens Foundry I: HST Observations and Modeling with GIGA-Lens Open
We present the Dark Energy Spectroscopic Instrument (DESI) Strong Lens Foundry. We discovered $\sim 3500$ new strong gravitational lens candidates in the DESI Legacy Imaging Surveys using residual neural networks (ResNet). We observed a su…
View article: Evaluating the Use of Recommended Screening and Preventive Practices for Adult Allogeneic Transplant Patient Survivors Performed by Advanced Practice Providers
Evaluating the Use of Recommended Screening and Preventive Practices for Adult Allogeneic Transplant Patient Survivors Performed by Advanced Practice Providers Open
Purpose: The purpose of this quality improvement project was to evaluate the use of a posttransplant screening care guidelines template performed by advanced practice providers (APPs) that included standards of care and published recommend…
View article: Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology
Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology Open
We describe the photometric data set assembled from the full six years of observations by the Dark Energy Survey (DES) in support of static-sky cosmology analyses. DES Y6 Gold is a curated data set derived from DES Data Release 2 (DR2) tha…
View article: Estimation of oxygen extraction fraction based on hemodynamic measurements using DSC-MRI
Estimation of oxygen extraction fraction based on hemodynamic measurements using DSC-MRI Open
Oxygen availability in brain tissue is closely linked to local hemodynamics and even slight disturbances in the cerebral microcirculation may damage cells due to the brain’s high energy demands. In addition to local cerebral blood flow, kn…
View article: Semi-analytical covariance matrices for two-point correlation function for DESI 2024 data
Semi-analytical covariance matrices for two-point correlation function for DESI 2024 data Open
We present an optimized way of producing the fast semi-analytical covariance matrices for the Legendre moments of the two-point correlation function, taking into account survey geometry and mimicking the non-Gaussian effects. We validate t…
View article: The construction of large-scale structure catalogs for the Dark Energy Spectroscopic Instrument
The construction of large-scale structure catalogs for the Dark Energy Spectroscopic Instrument Open
We present the technical details on how large-scale structure (LSS) catalogs are constructed from redshifts measured from spectra observed by the Dark Energy Spectroscopic Instrument (DESI). The LSS catalogs provide the information needed …
View article: Substantia nigra and locus coeruleus microstructural abnormalities in isolated rapid eye movement sleep behaviour disorder and Parkinson’s disease
Substantia nigra and locus coeruleus microstructural abnormalities in isolated rapid eye movement sleep behaviour disorder and Parkinson’s disease Open
Substantia nigra (SN) and locus coeruleus (LC) are two catecholaminergic, neuromelanin-rich nuclei that are affected in Parkinson’s disease (PD) and may show neuroimaging abnormalities before the onset of motor manifestations. The simultan…
View article: DESI Mg II Absorbers: Extinction Characteristics & Quasar Redshift Accuracy
DESI Mg II Absorbers: Extinction Characteristics & Quasar Redshift Accuracy Open
In this paper, we study how absorption-line systems affect the spectra and redshifts of quasars (QSOs), using catalogs of Mg II absorbers from the early data release (EDR) and first data release (DR1) of the Dark Energy Spectroscopic Instr…
View article: Regional microglial activation differs across the cortex of patients in the Alzheimer’s disease trajectory: A cross‐sectional study
Regional microglial activation differs across the cortex of patients in the Alzheimer’s disease trajectory: A cross‐sectional study Open
Background Microglial reactivity and neuroinflammation are crucial pathological processes in Alzheimer’s Disease (AD). Several attempts to develop a treatment by supressing the immune response in AD have been made, yet these yielded very l…
View article: Regional microglial activation differs across the cortex of patients in the Alzheimer's disease trajectory: a cross‐sectional study
Regional microglial activation differs across the cortex of patients in the Alzheimer's disease trajectory: a cross‐sectional study Open
Background Microglial reactivity and neuroinflammation are crucial pathological processes in Alzheimer’s Disease (AD). Several attempts to develop a treatment by supressing the immune response in AD have been made, yet these yielded very l…
View article: Dark energy survey year 3 results: likelihood-free, simulation-based <i>w</i>CDM inference with neural compression of weak-lensing map statistics
Dark energy survey year 3 results: likelihood-free, simulation-based <i>w</i>CDM inference with neural compression of weak-lensing map statistics Open
We present simulation-based cosmological wcold dark matter (wCDM) inference using dark energy survey year 3 weak-lensing maps, via neural data compression of weak-lensing map summary statistics: power spectra, peak counts, and direct map-l…
View article: Spectroscopic search for optical emission lines from dark matter decay
Spectroscopic search for optical emission lines from dark matter decay Open
Here we search for narrow-line optical emission from dark matter decay by stacking dark-sky spectra from the Dark Energy Spectroscopic Instrument (DESI) at the redshift of nearby galaxies from DESI’s Bright Galaxy and Luminous Red Galaxy s…