465 citations · 1.3k across the 17 of their papers we have counts for
18 papers
The Millennium and Astrid galaxies in effective field theory: comparison with galaxy-halo connection models at the field level
Mikhail M. Ivanov, Carolina Cuesta-Lazaro, Andrej Obuljen +8
Cosmological analyses of redshift space clustering data are primarily based on using luminous ``red'' galaxies (LRGs) and ``blue'' emission line galaxies (ELGs) to trace underlying…
Full-shape analysis with simulation-based priors: cosmological parameters and the structure growth anomaly
Mikhail M. Ivanov, Andrej Obuljen, Carolina Cuesta-Lazaro +1
We explore full-shape analysis with simulation-based priors, which is the simplest approach to galaxy clustering data analysis that combines effective field theory (EFT) on large s…
Improving cosmological analyses of HI clustering by reducing stochastic noise
Simon Foreman, Andrej Obuljen, Marko Simonović
High-number-density tracers of large-scale structure, such as the HI-rich galaxies measured by 21 cm intensity mapping, have low sampling noise, making them particularly promising…
Full-shape analysis with simulation-based priors: constraints on single field inflation from BOSS
Mikhail M. Ivanov, Carolina Cuesta-Lazaro, Siddharth Mishra-Sharma +2
Perturbative, or effective field theory (EFT)-based, full-shape analyses of galaxy clustering data involve ``nuisance parameters'' to capture various observational effects such as…
Modeling HI at the field level
Andrej Obuljen, Marko Simonović, Aurel Schneider +1
We use an analytical forward model based on perturbation theory to predict the neutral hydrogen (HI) overdensity maps at low redshifts. We investigate its performance by comparing…
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
B. Abareshi, J. Aguilar, S. Ahlen +264
The Dark Energy Spectroscopic Instrument (DESI) has embarked on an ambitious five-year survey to explore the nature of dark energy with spectroscopy of 40 million galaxies and quas…
Anisotropic effective redshift and evolving clustering amplitude
Andrej Obuljen, Will J. Percival
A typical galaxy survey geometry results in galaxy pairs of different separation and angle to the line-of-sight having different distributions in redshift and consequently a differ…
Detection of anisotropic galaxy assembly bias in BOSS DR12
Andrej Obuljen, Will J. Percival, Neal Dalal
We present evidence of anisotropic galaxy assembly bias in the Baryon Oscillation Spectroscopic Survey Data Release 12 galaxy sample at a level exceeding . We use measurements…
Packed Ultra-wideband Mapping Array (PUMA): Astro2020 RFI Response
Emanuele Castorina, Simon Foreman, Dionysios Karagiannis +13
The Packed Ultra-wideband Mapping Array (PUMA) is a proposed low-resolution transit interferometric radio telescope operating over the frequency range 200 - 1100MHz. Its rich scien…
The Quijote simulations
Francisco Villaescusa-Navarro, ChangHoon Hahn, Elena Massara +26
The Quijote simulations are a set of 44,100 full N-body simulations spanning more than 7,000 cosmological models in the hyperplane.…
Research and Development for HI Intensity Mapping
Zeeshan Ahmed, David Alonso, Mustafa A. Amin +51
Development of the hardware, data analysis, and simulation techniques for large compact radio arrays dedicated to mapping the 21 cm line of neutral hydrogen gas has proven to be mo…
Packed Ultra-wideband Mapping Array (PUMA): A Radio Telescope for Cosmology and Transients
Kevin Bandura, Emanuele Castorina, Liam Connor +23
PUMA is a proposal for an ultra-wideband, low-resolution and transit interferometric radio telescope operating at . Its design is driven by six science goal…
Anisotropic halo assembly bias and redshift-space distortions
Andrej Obuljen, Neal Dalal, Will J. Percival
We study the effect of large-scale tidal fields on internal halo properties using a set of N-body simulations. We measure significant cross-correlations between large-scale tidal f…
Inflation and Early Dark Energy with a Stage II Hydrogen Intensity Mapping Experiment
Cosmic Visions 21 cm Collaboration, Réza Ansari, Evan J. Arena +29
This white paper envisions a revolutionary post-DESI, post-LSST dark energy program based on intensity mapping of the redshifted 21cm emission line from neutral hydrogen at radio f…
The HI content of dark matter halos at from ALFALFA
Andrej Obuljen, David Alonso, Francisco Villaescusa-Navarro +2
We combine information from the clustering of HI galaxies in the 100% data release of the Arecibo Legacy Fast ALFA survey (ALFALFA), and from the HI content of optically-selected g…
Ingredients for 21cm intensity mapping
Francisco Villaescusa-Navarro, Shy Genel, Emanuele Castorina +11
[Abridged] We study the abundance and clustering properties of HI at redshifts using TNG100, a large state-of-the-art magneto-hydrodynamic simulation of a 75 Mpc/h bo…
High-redshift post-reionization cosmology with 21cm intensity mapping
Andrej Obuljen, Emanuele Castorina, Francisco Villaescusa-Navarro +1
We investigate the possibility of performing cosmological studies in the redshift range through suitable extensions of existing and upcoming radio-telescopes like CHIME,…
Baryon Acoustic Oscillations reconstruction with pixels
Andrej Obuljen, Francisco Villaescusa-Navarro, Emanuele Castorina +1
Gravitational non-linear evolution induces a shift in the position of the baryon acoustic oscillations (BAO) peak together with a damping and broadening of its shape that bias and…