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19912026
Showing 2021 · astro-ph.COShow all

28 papers · 2 filters

astro-ph.CO2021★ 64 cited

The Early Dark Sector, the Hubble Tension, and the Swampland

Evan McDonough, Meng-Xiang Lin, J. Colin Hill +2

We consider the interplay of the Early Dark Energy (EDE) model, the Swampland Distance Conjecture (SDC), and cosmological parameter tensions. EDE is a proposed resolution of the Hu…

astro-ph.CO2021★ 247 cited

Constraints on the cosmic expansion history from GWTC-3

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1676

We use 47 gravitational-wave sources from the Third LIGO-Virgo-KAGRA Gravitational-Wave Transient Catalog (GWTC-3) to estimate the Hubble parameter , including its current va…

astro-ph.CO2021★ 2 cited

Inferring halo masses with Graph Neural Networks

Pablo Villanueva-Domingo, Francisco Villaescusa-Navarro, Daniel Anglés-Alcázar +7

Understanding the halo-galaxy connection is fundamental in order to improve our knowledge on the nature and properties of dark matter. In this work we build a model that infers the…

astro-ph.CO2021

The Bias to Cosmic Microwave Background Lensing Reconstruction from the Kinematic Sunyaev-Zel'dovich Effect at Reionization

Hongbo Cai, Mathew S. Madhavacheril, J. Colin Hill +1

The power spectrum of reconstructed cosmic microwave background (CMB) lensing maps is a powerful tool for constraints on cosmological parameters like the sum of the neutrino masses…

astro-ph.CO2021★ 26 cited

HIFlow: Generating Diverse HI Maps and Inferring Cosmology while Marginalizing over Astrophysics using Normalizing Flows

Sultan Hassan, Francisco Villaescusa-Navarro, Benjamin Wandelt +11

A wealth of cosmological and astrophysical information is expected from many ongoing and upcoming large-scale surveys. It is crucial to prepare for these surveys now and develop to…

astro-ph.CO2021★ 70 cited

Search for subsolar-mass binaries in the first half of Advanced LIGO and Virgo's third observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1634

We report on a search for compact binary coalescences where at least one binary component has a mass between 0.2 and 1.0 in Advanced LIGO and Advanced Virgo dat…

astro-ph.CO2021★ 6 cited

Inpainting hydrodynamical maps with deep learning

Faizan G. Mohammad, Francisco Villaescusa-Navarro, Shy Genel +2

From 1,000 hydrodynamic simulations of the CAMELS project, each with a different value of the cosmological and astrophysical parameters, we generate 15,000 gas temperature maps. We…

astro-ph.CO2021★ 34 cited

Finding universal relations in subhalo properties with artificial intelligence

Helen Shao, Francisco Villaescusa-Navarro, Shy Genel +7

We use a generic formalism designed to search for relations in high-dimensional spaces to determine if the total mass of a subhalo can be predicted from other internal properties s…

astro-ph.CO2021★ 31 cited

Simultaneously constraining cosmology and baryonic physics via deep learning from weak lensing

Tianhuan Lu, Zoltán Haiman, José Manuel Zorrilla Matilla

Ongoing and planned weak lensing (WL) surveys are becoming deep enough to contain information on angular scales down to a few arcmin. To fully extract information from these small…

astro-ph.CO2021★ 56 cited

Construction of Wave Dark Matter Halos: Numerical Algorithm and Analytical Constraints

Tomer D. Yavetz, Xinyu Li, Lam Hui

We present a wave generalization of the classic Schwarzschild method for constructing self-consistent halos -- such a halo consists of a suitable superposition of waves instead of…

astro-ph.CO2021★ 3 cited

Nucleosynthetic signatures of primordial origin around supermassive black holes

Phoebe Upton Sanderbeck, Simeon Bird, Zoltan Haiman

If primordial black holes (PBHs) seeded the supermassive black holes (SMBHs) at the centers of high-redshift quasars, then the gas surrounding these black holes may reveal nucleosy…

astro-ph.CO2021★ 134 cited

The Atacama Cosmology Telescope: Constraints on Pre-Recombination Early Dark Energy

J. Colin Hill, Erminia Calabrese, Simone Aiola +40

The early dark energy (EDE) scenario aims to increase the value of the Hubble constant () inferred from cosmic microwave background (CMB) data over that found in CDM, via t…

astro-ph.CO2021★ 12 cited

Cosmological Constraints from Weak Lensing Peaks: Can Halo Models Accurately Predict Peak Counts?

Alina Sabyr, Zoltán Haiman, José Manuel Zorrilla Matilla +1

In order to extract full cosmological information from next-generation large and high-precision weak lensing (WL) surveys (e.g. Euclid, Roman, LSST), higher-order statistics that p…

astro-ph.CO2021★ 27 cited

Cross-correlation of DES Y3 lensing and ACT/ thermal Sunyaev Zel'dovich Effect I: Measurements, systematics tests, and feedback model constraints

M. Gatti, S. Pandey, E. Baxter +126

We present a tomographic measurement of the cross-correlation between thermal Sunyaev-Zeldovich (tSZ) maps from and the Atacama Cosmology Telescope (ACT) and weak ga…

astro-ph.CO2021★ 1 cited

Gravitational wave propagation beyond general relativity: waveform distortions and echoes

Jose Maria Ezquiaga, Wayne Hu, Macarena Lagos +1

We study the cosmological propagation of gravitational waves (GWs) beyond general relativity (GR) across homogeneous and isotropic backgrounds. We consider scenarios in which GWs i…

astro-ph.CO2021★ 43 cited

Cross-correlation of DES Y3 lensing and ACT/ thermal Sunyaev Zel'dovich Effect II: Modeling and constraints on halo pressure profiles

S. Pandey, M. Gatti, E. Baxter +121

Hot, ionized gas leaves an imprint on the cosmic microwave background via the thermal Sunyaev Zel'dovich (tSZ) effect. The cross-correlation of gravitational lensing (which traces…

astro-ph.CO2021★ 17 cited

Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: I. Evidence for thermal energy anisotropy using oriented stacking

M. Lokken, R. Hložek, A. van Engelen +104

The cosmic web contains filamentary structure on a wide range of scales. On the largest scales, superclustering aligns multiple galaxy clusters along inter-cluster bridges, visible…

astro-ph.CO2021★ 5 cited

A high-resolution view of the filament of gas between Abell 399 and Abell 401 from the Atacama Cosmology Telescope and MUSTANG-2

Adam D. Hincks, Federico Radiconi, Charles Romero +43

We report a significant detection of the hot intergalactic medium in the filamentary bridge connecting the galaxy clusters Abell 399 and Abell 401. This result is enabled by a low-…

astro-ph.CO2021★ 3 cited

The mass and galaxy distribution around SZ-selected clusters

T. Shin, B. Jain, S. Adhikari +136

We present measurements of the radial profiles of the mass and galaxy number density around Sunyaev-Zel'dovich-selected clusters using both weak lensing and galaxy counts. The clus…

astro-ph.CO2021★ 85 cited

Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1627

We present a search for dark photon dark matter that could couple to gravitational-wave interferometers using data from Advanced LIGO and Virgo's third observing run. To perform th…

astro-ph.CO2021★ 37 cited

Can small-scale baryon inhomogeneities resolve the Hubble tension? An investigation with ACT DR4

Leander Thiele, Yilun Guan, J. Colin Hill +2

Small-scale inhomogeneities in the baryon density around recombination have been proposed as a solution to the tension between local and global determinations of the Hubble constan…

astro-ph.CO2021★ 28 cited

The Impact of Baryons on Cosmological Inference from Weak Lensing Statistics

Tianhuan Lu, Zoltán Haiman

As weak lensing surveys are becoming deeper and cover larger areas, information will be available on small angular scales down to the arcmin level. To extract this extra informatio…

astro-ph.CO2021★ 33 cited

Baryonic feedback biases on fundamental physics from lensed CMB power spectra

Fiona McCarthy, J. Colin Hill, Mathew S. Madhavacheril

Upcoming measurements of the small-scale primary cosmic microwave background (CMB) temperature and polarization power spectra (//) are anticipated to yield transformati…

astro-ph.CO2021★ 3 cited

Gravitational wave backgrounds from coalescing black hole binaries at cosmic dawn: an upper bound

Kohei Inayoshi, Kazumi Kashiyama, Eli Visbal +1

The successive discoveries of binary merger events by Advanced LIGO-Virgo have been revealing the statistical properties of binary black hole (BBH) populations. A stochastic gravit…