Detection of anti-correlation of hot and cold baryons in galaxy clusters

Arya Farahi, Sarah L. Mulroy, August E. Evrard, Graham P. Smith, Alexis Finoguenov, Hervé Bourdin, John E. Carlstrom, Chris P. Haines, Daniel P Marrone, Rossella Martino, Pasquale Mazzotta, Christine O’Donnell, Nobuhiro Okabe

Research output: Contribution to journalArticle

Abstract

The largest clusters of galaxies in the Universe contain vast amounts of dark matter, plus baryonic matter in two principal phases, a majority hot gas component and a minority cold stellar phase comprising stars, compact objects, and low-temperature gas. Hydrodynamic simulations indicate that the highest-mass systems retain the cosmic fraction of baryons, a natural consequence of which is anti-correlation between the masses of hot gas and stars within dark matter halos of fixed total mass. We report observational detection of this anti-correlation based on 4 elements of a 9 × 9-element covariance matrix for nine cluster properties, measured from multi-wavelength observations of 41 clusters from the Local Cluster Substructure Survey. These clusters were selected using explicit and quantitative selection rules that were then encoded in our hierarchical Bayesian model. Our detection of anti-correlation is consistent with predictions from contemporary hydrodynamic cosmological simulations that were not tuned to reproduce this signal.

Original languageEnglish (US)
Article number2504
JournalNature communications
Volume10
Issue number1
DOIs
StatePublished - Dec 1 2019

Fingerprint

Elementary Particles
Galaxies
baryons
Gases
Hydrodynamics
galaxies
Stars
high temperature gases
Covariance matrix
dark matter
hydrodynamics
hot stars
Wavelength
minorities
Temperature
substructures
halos
simulation
universe
stars

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Farahi, A., Mulroy, S. L., Evrard, A. E., Smith, G. P., Finoguenov, A., Bourdin, H., ... Okabe, N. (2019). Detection of anti-correlation of hot and cold baryons in galaxy clusters. Nature communications, 10(1), [2504]. https://doi.org/10.1038/s41467-019-10471-y

Detection of anti-correlation of hot and cold baryons in galaxy clusters. / Farahi, Arya; Mulroy, Sarah L.; Evrard, August E.; Smith, Graham P.; Finoguenov, Alexis; Bourdin, Hervé; Carlstrom, John E.; Haines, Chris P.; Marrone, Daniel P; Martino, Rossella; Mazzotta, Pasquale; O’Donnell, Christine; Okabe, Nobuhiro.

In: Nature communications, Vol. 10, No. 1, 2504, 01.12.2019.

Research output: Contribution to journalArticle

Farahi, A, Mulroy, SL, Evrard, AE, Smith, GP, Finoguenov, A, Bourdin, H, Carlstrom, JE, Haines, CP, Marrone, DP, Martino, R, Mazzotta, P, O’Donnell, C & Okabe, N 2019, 'Detection of anti-correlation of hot and cold baryons in galaxy clusters', Nature communications, vol. 10, no. 1, 2504. https://doi.org/10.1038/s41467-019-10471-y
Farahi A, Mulroy SL, Evrard AE, Smith GP, Finoguenov A, Bourdin H et al. Detection of anti-correlation of hot and cold baryons in galaxy clusters. Nature communications. 2019 Dec 1;10(1). 2504. https://doi.org/10.1038/s41467-019-10471-y
Farahi, Arya ; Mulroy, Sarah L. ; Evrard, August E. ; Smith, Graham P. ; Finoguenov, Alexis ; Bourdin, Hervé ; Carlstrom, John E. ; Haines, Chris P. ; Marrone, Daniel P ; Martino, Rossella ; Mazzotta, Pasquale ; O’Donnell, Christine ; Okabe, Nobuhiro. / Detection of anti-correlation of hot and cold baryons in galaxy clusters. In: Nature communications. 2019 ; Vol. 10, No. 1.
@article{1017d80792d14be6b0cc834704721e04,
title = "Detection of anti-correlation of hot and cold baryons in galaxy clusters",
abstract = "The largest clusters of galaxies in the Universe contain vast amounts of dark matter, plus baryonic matter in two principal phases, a majority hot gas component and a minority cold stellar phase comprising stars, compact objects, and low-temperature gas. Hydrodynamic simulations indicate that the highest-mass systems retain the cosmic fraction of baryons, a natural consequence of which is anti-correlation between the masses of hot gas and stars within dark matter halos of fixed total mass. We report observational detection of this anti-correlation based on 4 elements of a 9 × 9-element covariance matrix for nine cluster properties, measured from multi-wavelength observations of 41 clusters from the Local Cluster Substructure Survey. These clusters were selected using explicit and quantitative selection rules that were then encoded in our hierarchical Bayesian model. Our detection of anti-correlation is consistent with predictions from contemporary hydrodynamic cosmological simulations that were not tuned to reproduce this signal.",
author = "Arya Farahi and Mulroy, {Sarah L.} and Evrard, {August E.} and Smith, {Graham P.} and Alexis Finoguenov and Herv{\'e} Bourdin and Carlstrom, {John E.} and Haines, {Chris P.} and Marrone, {Daniel P} and Rossella Martino and Pasquale Mazzotta and Christine O’Donnell and Nobuhiro Okabe",
year = "2019",
month = "12",
day = "1",
doi = "10.1038/s41467-019-10471-y",
language = "English (US)",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

TY - JOUR

T1 - Detection of anti-correlation of hot and cold baryons in galaxy clusters

AU - Farahi, Arya

AU - Mulroy, Sarah L.

AU - Evrard, August E.

AU - Smith, Graham P.

AU - Finoguenov, Alexis

AU - Bourdin, Hervé

AU - Carlstrom, John E.

AU - Haines, Chris P.

AU - Marrone, Daniel P

AU - Martino, Rossella

AU - Mazzotta, Pasquale

AU - O’Donnell, Christine

AU - Okabe, Nobuhiro

PY - 2019/12/1

Y1 - 2019/12/1

N2 - The largest clusters of galaxies in the Universe contain vast amounts of dark matter, plus baryonic matter in two principal phases, a majority hot gas component and a minority cold stellar phase comprising stars, compact objects, and low-temperature gas. Hydrodynamic simulations indicate that the highest-mass systems retain the cosmic fraction of baryons, a natural consequence of which is anti-correlation between the masses of hot gas and stars within dark matter halos of fixed total mass. We report observational detection of this anti-correlation based on 4 elements of a 9 × 9-element covariance matrix for nine cluster properties, measured from multi-wavelength observations of 41 clusters from the Local Cluster Substructure Survey. These clusters were selected using explicit and quantitative selection rules that were then encoded in our hierarchical Bayesian model. Our detection of anti-correlation is consistent with predictions from contemporary hydrodynamic cosmological simulations that were not tuned to reproduce this signal.

AB - The largest clusters of galaxies in the Universe contain vast amounts of dark matter, plus baryonic matter in two principal phases, a majority hot gas component and a minority cold stellar phase comprising stars, compact objects, and low-temperature gas. Hydrodynamic simulations indicate that the highest-mass systems retain the cosmic fraction of baryons, a natural consequence of which is anti-correlation between the masses of hot gas and stars within dark matter halos of fixed total mass. We report observational detection of this anti-correlation based on 4 elements of a 9 × 9-element covariance matrix for nine cluster properties, measured from multi-wavelength observations of 41 clusters from the Local Cluster Substructure Survey. These clusters were selected using explicit and quantitative selection rules that were then encoded in our hierarchical Bayesian model. Our detection of anti-correlation is consistent with predictions from contemporary hydrodynamic cosmological simulations that were not tuned to reproduce this signal.

UR - http://www.scopus.com/inward/record.url?scp=85068359350&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068359350&partnerID=8YFLogxK

U2 - 10.1038/s41467-019-10471-y

DO - 10.1038/s41467-019-10471-y

M3 - Article

AN - SCOPUS:85068359350

VL - 10

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 2504

ER -