Dark Energy Survey Year 3 results: Simulation-based cosmological inference with wavelet harmonics, scattering transforms, and moments of weak lensing mass maps …
Beyond-two-point statistics contain additional information on cosmological as well as
astrophysical and observational (systematics) parameters. In this methodology paper we …
astrophysical and observational (systematics) parameters. In this methodology paper we …
The large-scale velocity field from the Cosmicflows-4 data
Y Hoffman, A Valade, NI Libeskind… - Monthly Notices of …, 2024 - academic.oup.com
The reconstruction of the large-scale velocity field from the grouped Cosmicflows-4 (CF4)
database is presented. The lognormal bias of the inferred distances and velocities data is …
database is presented. The lognormal bias of the inferred distances and velocities data is …
Map-based cosmology inference with weak lensing–information content and its dependence on the parameter space
SS Boruah, E Rozo - Monthly Notices of the Royal Astronomical …, 2024 - academic.oup.com
Field-level inference is emerging as a promising technique for optimally extracting
information from cosmological data sets. Previous analyses have shown field-based …
information from cosmological data sets. Previous analyses have shown field-based …
Bayesian mass mapping with weak lensing data using karmma: Validation with simulations and application to Dark Energy Survey year 3 data
SS Boruah, P Fiedorowicz, E Rozo - Physical Review D, 2024 - APS
We update the field-level inference code karmma to enable tomographic forward-modeling
of shear maps. Our code assumes a log-normal prior on the convergence field, and properly …
of shear maps. Our code assumes a log-normal prior on the convergence field, and properly …
Growth-rate measurement with type-Ia supernovae using ZTF survey simulations
B Carreres, JE Bautista, F Feinstein, D Fouchez… - Astronomy & …, 2023 - aanda.org
Measurements of the growth rate of structures at z< 0.1 with peculiar velocity surveys have
the potential of testing the validity of general relativity on cosmic scales. In this work, we …
the potential of testing the validity of general relativity on cosmic scales. In this work, we …
Statistically bias-minimized peculiar velocity catalogs from Gibbs point processes and Bayesian inference
The peculiar velocities of galaxies can serve as excellent cosmological probes provided that
the biases inherent to their measurements are contained prior to the start of any study. This …
the biases inherent to their measurements are contained prior to the start of any study. This …
Testing Bayesian reconstruction methods from peculiar velocities
A Valade, NI Libeskind, Y Hoffman… - Monthly Notices of the …, 2023 - academic.oup.com
Reconstructing the large-scale density and velocity fields from surveys of galaxy distances is
a major challenge for cosmography. The data are very noisy and sparse. Estimated …
a major challenge for cosmography. The data are very noisy and sparse. Estimated …
Fast modeling of the shear three-point correlation function
S Sugiyama, RCH Gomes, M Jarvis - arXiv preprint arXiv:2407.01798, 2024 - arxiv.org
The three-point correlation function (3PCF) of a weak lensing shear field contains
information that is complementary to that in the two-point correlation function (2PCF), which …
information that is complementary to that in the two-point correlation function (2PCF), which …
Peculiar Velocity Reconstruction From Simulations and Observations Using Deep Learning Algorithms
Y Wang, X Yang - arXiv preprint arXiv:2406.14101, 2024 - arxiv.org
In this paper, we introduce a Unet model of deep learning algorithms for reconstructions of
the 3D peculiar velocity field, which simplifies the reconstruction process with enhanced …
the 3D peculiar velocity field, which simplifies the reconstruction process with enhanced …
Physical Processes Behind the Co-Evolution of Halos, Galaxies and Supermassive Black Holes in the IllustrisTNG Simulation
H Li, Y Chen, H Wang, H Mo - arXiv preprint arXiv:2409.06208, 2024 - arxiv.org
We explore the co-evolution of dark matter halos, their central galaxies, and central
supermassive black holes (SMBHs) using the IllustrisTNG (TNG) simulation. We find that the …
supermassive black holes (SMBHs) using the IllustrisTNG (TNG) simulation. We find that the …