Validation of the scientific program for the Dark Energy Spectroscopic Instrument
AG Adame, J Aguilar, S Ahlen, S Alam… - The Astronomical …, 2024 - iopscience.iop.org
Studies of the geometry and energy content of the Universe, physics of cosmic expansion,
fundamental properties of standard model particles, and growth of structure remain the key …
fundamental properties of standard model particles, and growth of structure remain the key …
PNG-UNITsims: Halo clustering response to primordial non-Gaussianities as a function of mass
AG Adame, S Avila, V Gonzalez-Perez… - Astronomy & …, 2024 - aanda.org
This paper presents the PNG-UNITSIMS suite, which includes the largest full N-body
simulation to date with local primordial non-Gaussianities (local PNG), the PNG-UNIT. The …
simulation to date with local primordial non-Gaussianities (local PNG), the PNG-UNIT. The …
Precision redshift-space galaxy power spectra using Zel'dovich control variates
Numerical simulations in cosmology require trade-offs between volume, resolution and run-
time that limit the volume of the Universe that can be simulated, leading to sample variance …
time that limit the volume of the Universe that can be simulated, leading to sample variance …
The MillenniumTNG Project: the large-scale clustering of galaxies
S Bose, B Hadzhiyska, M Barrera… - Monthly Notices of …, 2023 - academic.oup.com
Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous
distance scales. Existing hydrodynamical simulations, however, do not reach the volumes …
distance scales. Existing hydrodynamical simulations, however, do not reach the volumes …
DESI mock challenge-Halo and galaxy catalogues with the bias assignment method
A Balaguera-Antolínez, FS Kitaura, S Alam… - Astronomy & …, 2023 - aanda.org
Context. We present a novel approach to the construction of mock galaxy catalogues for
large-scale structure analysis based on the distribution of dark matter halos obtained with …
large-scale structure analysis based on the distribution of dark matter halos obtained with …
Mitigating the noise of DESI mocks using analytic control variates
In order to address fundamental questions related to the expansion history of the Universe
and its primordial nature with the next generation of galaxy experiments, we need to model …
and its primordial nature with the next generation of galaxy experiments, we need to model …
Accurate predictions from small boxes: variance suppression via the Zel'dovich approximation
Simulations have become an indispensable tool for accurate modelling of observables
measured in galaxy surveys, but can be expensive if very large dynamic range in scale is …
measured in galaxy surveys, but can be expensive if very large dynamic range in scale is …
Covariance matrices for the Lyman-α forest using the lognormal approximation
B Arya, A Paranjape… - Journal of Cosmology and …, 2024 - iopscience.iop.org
We investigate the nature of correlations in the small-scale flux statistics of the Lyman-α
(Lyα) forest across redshift bins. Understanding and characterising these correlations is …
(Lyα) forest across redshift bins. Understanding and characterising these correlations is …
Comparing Compressed and Full-modeling Analyses with FOLPS: Implications for DESI 2024 and beyond
The Dark Energy Spectroscopic Instrument (DESI) will provide unprecedented information
about the large-scale structure of our Universe. In this work, we study the robustness of the …
about the large-scale structure of our Universe. In this work, we study the robustness of the …
A modified lognormal approximation of the Lyman-α forest: comparison with full hydrodynamic simulations at 2≤ z≤ 2.7
B Arya, TR Choudhury, A Paranjape… - Journal of Cosmology …, 2024 - iopscience.iop.org
Observations of the Lyman-α forest in distant quasar spectra with upcoming surveys are
expected to provide significantly larger and higher-quality datasets. To interpret these …
expected to provide significantly larger and higher-quality datasets. To interpret these …