Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies

Ewan O'Sullivan; DM Worrall; M Birkinshaw; G Trinchieri; A Wolter; A Zezas; S Giacintucci

doi:10.1111/j.1365-2966.2011.19239.x

Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies

Ewan O'Sullivan, DM Worrall, M Birkinshaw, G Trinchieri, A Wolter, A Zezas, S Giacintucci

Physics and Astronomy

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Abstract

Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intragroup medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the radio lobes and estimate their enthalpy to be similar to 2.4 x 10(58) erg. The mechanical power output of the jets is >= 10(43) erg s(-1), at least a factor of 60 greater than the cooling luminosity in the region the lobes inhabit. We identify rims of compressed gas enclosing the lobes, but find no statistically significant temperature difference between them and their surroundings, suggesting that the lobe expansion velocity is approximately sonic (M

Original language	English
Pages (from-to)	2916-2931
Number of pages	16
Journal	Royal Astronomical Society. Monthly Notices
Volume	416
Issue number	4
DOIs	https://doi.org/10.1111/j.1365-2966.2011.19239.x
Publication status	Published - 1 Oct 2011

Keywords

galaxies: individual: NGC4261
X-rays: galaxies
galaxies: individual: 3C 270
galaxies: active
intergalactic medium

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10.1111/j.1365-2966.2011.19239.x

Cite this

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title = "Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies",

abstract = "Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intragroup medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the radio lobes and estimate their enthalpy to be similar to 2.4 x 10(58) erg. The mechanical power output of the jets is >= 10(43) erg s(-1), at least a factor of 60 greater than the cooling luminosity in the region the lobes inhabit. We identify rims of compressed gas enclosing the lobes, but find no statistically significant temperature difference between them and their surroundings, suggesting that the lobe expansion velocity is approximately sonic (M ",

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T1 - Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies

AU - O'Sullivan, Ewan

AU - Worrall, DM

AU - Birkinshaw, M

AU - Trinchieri, G

AU - Wolter, A

AU - Zezas, A

AU - Giacintucci, S

PY - 2011/10/1

Y1 - 2011/10/1

N2 - Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intragroup medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the radio lobes and estimate their enthalpy to be similar to 2.4 x 10(58) erg. The mechanical power output of the jets is >= 10(43) erg s(-1), at least a factor of 60 greater than the cooling luminosity in the region the lobes inhabit. We identify rims of compressed gas enclosing the lobes, but find no statistically significant temperature difference between them and their surroundings, suggesting that the lobe expansion velocity is approximately sonic (M

AB - Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intragroup medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the radio lobes and estimate their enthalpy to be similar to 2.4 x 10(58) erg. The mechanical power output of the jets is >= 10(43) erg s(-1), at least a factor of 60 greater than the cooling luminosity in the region the lobes inhabit. We identify rims of compressed gas enclosing the lobes, but find no statistically significant temperature difference between them and their surroundings, suggesting that the lobe expansion velocity is approximately sonic (M

KW - galaxies: individual: NGC4261

KW - X-rays: galaxies

KW - galaxies: individual: 3C 270

KW - galaxies: active

KW - intergalactic medium

U2 - 10.1111/j.1365-2966.2011.19239.x

DO - 10.1111/j.1365-2966.2011.19239.x

M3 - Article

SN - 1365-2966

VL - 416

SP - 2916

EP - 2931

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

IS - 4

ER -

Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies

Abstract

Keywords

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