110 citations · 476 across the 24 of their papers we have counts for
25 papers
Imprints of Mass Accretion History on Galaxy Cluster Morphology
Kabelo Tsiane, Camille Avestruz, Elena Rasia +6
Variations in dynamical states of galaxy clusters can introduce biases and scatter in observable-mass relations. The dynamical state of a cluster is an emergent feature of its mass…
Intracluster Medium Fluctuations on Scales up to 1 Mpc: A Combined eROSITA and SPT/Planck Analysis of Abell 3266
H. Saxena, A. Heinrich, J. Sayers +22
Galaxy clusters form through hierarchical assembly, where smaller substructures merge to build the largest gravitationally bound objects in the universe. These mergers, combined wi…
Fast and Flexible Inference Framework for Continuum Reverberation Mapping using Simulation-based Inference with Deep Learning
Jennifer I-Hsiu Li, Sean D. Johnson, Camille Avestruz +5
Continuum reverberation mapping (CRM) of active galactic nuclei (AGN) monitors multiwavelength variability signatures to constrain accretion disk structure and supermassive black h…
Compressed baryon acoustic oscillation analysis is robust to modified-gravity models
Jiaming Pan, Dragan Huterer, Felipe Andrade-Oliveira +1
We study the robustness of the baryon acoustic oscillation (BAO) analysis to the underlying cosmological model. We focus on testing the standard BAO analysis that relies on the use…
Emergence of the Temperature-Density Relation in the Low-Density Intergalactic Medium
Alexandra Wells, David Robinson, Camille Avestruz +1
We examine the evolution of the phase diagram of the low-density intergalactic medium during the Epoch of Reionization in simulation boxes with varying reionization histories from…
Exploring the Dependence of Gas Cooling and Heating Functions on the Incident Radiation Field with Machine Learning
David Robinson, Camille Avestruz, Nickolay Y. Gnedin
Gas cooling and heating functions play a crucial role in galaxy formation. But, it is computationally expensive to exactly compute these functions in the presence of an incident ra…
Towards Quantifying the Impact of Triaxiality on Optical Signatures of Galaxy Clusters: Weak Lensing and Galaxy Distributions
Shenming Fu, Yuanyuan Zhang, Camille Avestruz +1
We present observational evidence of the impact of triaxiality on radial profiles that extend to 40 Mpc from galaxy cluster centres in optical measurements. We perform a stacked pr…
MultiCAM: A multivariable framework for connecting the mass accretion history of haloes with their properties
Ismael Mendoza, Philip Mansfield, Kuan Wang +1
Models that connect galaxy and halo properties often summarize a halo's mass accretion history (MAH) with a single value, and use this value as the basis for predictions. However,…
Cosmic Reionization On Computers: Statistics, Physical Properties and Environment of Lyman Limit Systems at
Jiawen Fan, Hanjue Zhu, Camille Avestruz +1
Lyman limit systems (LLSs) are dense hydrogen clouds with high enough HI column densities to absorb Lyman continuum photons emitted from distant quasars. Their high column densitie…
Snowmass2021: Opportunities from Cross-survey Analyses of Static Probes
Eric J. Baxter, Chihway Chang, Andrew Hearin +37
Cosmological data in the next decade will be characterized by high-precision, multi-wavelength measurements of thousands of square degrees of the same patches of sky. By performing…
Can Cooling and Heating Functions be Modeled with Homogeneous Radiation Fields?
David Robinson, Camille Avestruz, Nickolay Y. Gnedin
Cooling and heating functions describe how radiative processes impact the thermal state of a gas as a function of its temperature and other physical properties. In a most general c…
Brightest Cluster Galaxies Trace Weak Lensing Mass Bias and Halo Triaxiality in The Three Hundred Project
Ricardo Herbonnet, Adrian Crawford, Camille Avestruz +6
Galaxy clusters have a triaxial matter distribution. The weak-lensing signal, an important part in cosmological studies, measures the projected mass of all matter along the line-of…
SHAPing the Gas: Understanding Gas Shapes in Dark Matter Haloes with Interpretable Machine Learning
Luis Fernando Machado Poletti Valle, Camille Avestruz, David J. Barnes +3
The non-spherical shapes of dark matter and gas distributions introduce systematic uncertainties that affect observable-mass relations and selection functions of galaxy groups and…
Cosmic Reionization On Computers: The Galaxy-Halo Connection between
Hanjue Zhu, Camille Avestruz, Nickolay Y. Gnedin
We explore the connection between the stellar component of galaxies and their host halos during the epoch of reionization () using the CROC (Cosmic Reionization on…
Imprints of Mass Accretion History on the Shape of the Intracluster Medium and the Relation
Huanqing Chen, Camille Avestruz, Andrey V. Kravtsov +2
We use a statistical sample of galaxy clusters from a large cosmological -bodyhydrodynamics simulation to examine the relation between morphology, or shape, of the X-ray emit…
Probing Macro-Scale Gas Motions and Turbulence in Diffuse Cosmic Plasmas
Esra Bulbul, Massimo Gaspari, Gabriella Alvarez +31
Clusters of galaxies, the largest collapsed structures in the Universe, are located at the intersection of extended filaments of baryons and dark matter. Cosmological accretion ont…
Unveiling the Galaxy Cluster - Cosmic Web Connection with X-ray observations in the Next Decade
Stephen A. Walker, Daisuke Nagai, A. Simionescu +35
In recent years, the outskirts of galaxy clusters have emerged as one of the new frontiers and unique laboratories for studying the growth of large scale structure in the universe.…
Cosmic Reionization On Computers: Reionization Histories of Present-day Galaxies
Hanjue Zhu, Camille Avestruz, Nickolay Y. Gnedin
We examine the reionization history of present-day galaxies by explicitly tracing the building blocks of halos from the Cosmic Reionization On Computers project. We track dark matt…
Automated Lensing Learner: Automated Strong Lensing Identification with a Computer Vision Technique
Camille Avestruz, Nan Li, Hanjue Zhu +3
Forthcoming surveys such as the Large Synoptic Survey Telescope (LSST) and Euclid necessitate automatic and efficient identification methods of strong lensing systems. We present a…
Stirred, not Clumped: Evolution of Temperature Profiles in the Outskirts of Galaxy Clusters
Camille Avestruz, Daisuke Nagai, Erwin T. Lau
Recent statistical X-ray measurements of the intracluster medium (ICM) indicate that gas temperature profiles in the outskirts of galaxy clusters deviate from self-similar evolutio…
Mass Accretion and its Effects on the Self-Similarity of Gas Profiles in the Outskirts of Galaxy Clusters
Erwin T. Lau, Daisuke Nagai, Camille Avestruz +2
Galaxy clusters exhibit remarkable self-similar behavior which allows us to establish simple scaling relationships between observable quantities and cluster masses, making galaxy c…
Non-Equilibrium Electrons in the Outskirts of Galaxy Clusters
Camille Avestruz, Daisuke Nagai, Erwin T. Lau +1
The analysis of X-ray and Sunyaev-Zeldovich measurements of the intracluster medium (ICM) assumes that electrons are in thermal equilibrium with ions in the plasma. However, electr…
Temperature Structure of the Intra-Cluster Medium from SPH and AMR simulations
Elena Rasia, Erwin T. Lau, Stefano Borgani +8
Analyses of cosmological hydrodynamic simulations of galaxy clusters suggest that X-ray masses can be underestimated by 10% to 30%. The largest bias originates by both violation of…
Testing X-ray Measurements of Galaxy Cluster Outskirts with Cosmological Simulations
Camille Avestruz, Erwin T. Lau, Daisuke Nagai +1
The study of galaxy cluster outskirts has emerged as one of the new frontiers in extragalactic astrophysics and cosmology with the advent of new observations in X-ray and microwave…