A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

D. M. Worrall; M. Birkinshaw

doi:10.1093/mnras/stx275

A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

D. M. Worrall, M. Birkinshaw

School of Physics

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Abstract

We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z=0.1 is rare. The radio source was chosen for observation based on its intermediate FRI/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse Compton X-ray emission. The jet power, at 5.3 x 10^44 erg/s, when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.

Original language	English
Pages (from-to)	2903-2912
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	467
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stx275
Publication status	Published - 1 Feb 2017

Keywords

galaxies: active
galaxies: clusters: general
galaxies: individual: (PKSB1416−493)
galaxies: jets
radio continuum: galaxies
X-rays: galaxies: clusters

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@article{9918a164594848f2830bb5355b09b7c6,

title = "A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493",

abstract = "We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z=0.1 is rare. The radio source was chosen for observation based on its intermediate FRI/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse Compton X-ray emission. The jet power, at 5.3 x 10^44 erg/s, when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.",

keywords = "galaxies: active, galaxies: clusters: general, galaxies: individual: (PKSB1416−493), galaxies: jets, radio continuum: galaxies, X-rays: galaxies: clusters",

author = "Worrall, {D. M.} and M. Birkinshaw",

year = "2017",

month = feb,

day = "1",

doi = "10.1093/mnras/stx275",

language = "English",

volume = "467",

pages = "2903--2912",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

AU - Worrall, D. M.

AU - Birkinshaw, M.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z=0.1 is rare. The radio source was chosen for observation based on its intermediate FRI/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse Compton X-ray emission. The jet power, at 5.3 x 10^44 erg/s, when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.

AB - We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z=0.1 is rare. The radio source was chosen for observation based on its intermediate FRI/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse Compton X-ray emission. The jet power, at 5.3 x 10^44 erg/s, when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.

KW - galaxies: active

KW - galaxies: clusters: general

KW - galaxies: individual: (PKSB1416−493)

KW - galaxies: jets

KW - radio continuum: galaxies

KW - X-rays: galaxies: clusters

U2 - 10.1093/mnras/stx275

DO - 10.1093/mnras/stx275

M3 - Article (Academic Journal)

SN - 0035-8711

VL - 467

SP - 2903

EP - 2912

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

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Keywords

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