New tests of the cluster entropy floor hypothesis

I. G. McCarthy; A. Babul; M. L. Balogh; G. P. Holder

New tests of the cluster entropy floor hypothesis

I. G. McCarthy, A. Babul, M. L. Balogh, G. P. Holder

Research output: Contribution to journal › Conference article › peer-review

Abstract

Recent efforts to account for the observed LX - TX relation of galaxy clusters has led to suggestions that the ICM has an apparent "entropy oor" at the level of K₀ ≳ 300 keV cm². Here, we propose new tests based on the thermal SZ effect and on the M_gas - TX trend (from X-ray data) to probe the level of the excess entropy in the ICM. We show that these new tests lend further support to the case for a high entropy oor in massive clusters.

Original language	English (US)
Pages (from-to)	315-316
Number of pages	2
Journal	Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Volume	17
State	Published - 2003
Externally published	Yes
Event	Galaxy Evolution: Theory and Observations - Cozumel, Mexico Duration: Apr 8 2002 → Apr 12 2002

Keywords

Cosmology: theory
Galaxies: clusters
X-rays: galaxies

ASJC Scopus subject areas

Space and Planetary Science
Astronomy and Astrophysics

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title = "New tests of the cluster entropy floor hypothesis",

abstract = "Recent efforts to account for the observed LX - TX relation of galaxy clusters has led to suggestions that the ICM has an apparent {"}entropy oor{"} at the level of K0 ≳ 300 keV cm2. Here, we propose new tests based on the thermal SZ effect and on the Mgas - TX trend (from X-ray data) to probe the level of the excess entropy in the ICM. We show that these new tests lend further support to the case for a high entropy oor in massive clusters.",

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author = "McCarthy, {I. G.} and A. Babul and Balogh, {M. L.} and Holder, {G. P.}",

year = "2003",

language = "English (US)",

volume = "17",

pages = "315--316",

journal = "Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias",

issn = "1405-2059",

note = "Galaxy Evolution: Theory and Observations ; Conference date: 08-04-2002 Through 12-04-2002",

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TY - JOUR

T1 - New tests of the cluster entropy floor hypothesis

AU - McCarthy, I. G.

AU - Babul, A.

AU - Balogh, M. L.

AU - Holder, G. P.

PY - 2003

Y1 - 2003

N2 - Recent efforts to account for the observed LX - TX relation of galaxy clusters has led to suggestions that the ICM has an apparent "entropy oor" at the level of K0 ≳ 300 keV cm2. Here, we propose new tests based on the thermal SZ effect and on the Mgas - TX trend (from X-ray data) to probe the level of the excess entropy in the ICM. We show that these new tests lend further support to the case for a high entropy oor in massive clusters.

AB - Recent efforts to account for the observed LX - TX relation of galaxy clusters has led to suggestions that the ICM has an apparent "entropy oor" at the level of K0 ≳ 300 keV cm2. Here, we propose new tests based on the thermal SZ effect and on the Mgas - TX trend (from X-ray data) to probe the level of the excess entropy in the ICM. We show that these new tests lend further support to the case for a high entropy oor in massive clusters.

KW - Cosmology: theory

KW - Galaxies: clusters

KW - X-rays: galaxies

UR - http://www.scopus.com/inward/record.url?scp=71949119654&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=71949119654&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:71949119654

SN - 1405-2059

VL - 17

SP - 315

EP - 316

JO - Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias

JF - Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias

T2 - Galaxy Evolution: Theory and Observations

Y2 - 8 April 2002 through 12 April 2002

ER -

New tests of the cluster entropy floor hypothesis

Abstract

Keywords

ASJC Scopus subject areas

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