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A Chandra observation of 3C 288 - reheating the cool core of a 3 keV cluster from a nuclear outburst at z=0.246. / Lal, D.V.; Kraft, R.P.; Forman, W.R.; Hardcastle, M.J.; Jones, C.; Nulsen, P.E.J.; Evans, D.A.; Croston, J.H.; Lee, J.C.

In: The Astrophysical Journal, Vol. 722, No. 2, 2010, p. 1735-1743.

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Lal, DV, Kraft, RP, Forman, WR, Hardcastle, MJ, Jones, C, Nulsen, PEJ, Evans, DA, Croston, JH & Lee, JC 2010, 'A Chandra observation of 3C 288 - reheating the cool core of a 3 keV cluster from a nuclear outburst at z=0.246', The Astrophysical Journal, vol. 722, no. 2, pp. 1735-1743. https://doi.org/10.1088/0004-637X/722/2/1735

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Author

Lal, D.V. ; Kraft, R.P. ; Forman, W.R. ; Hardcastle, M.J. ; Jones, C. ; Nulsen, P.E.J. ; Evans, D.A. ; Croston, J.H. ; Lee, J.C. / A Chandra observation of 3C 288 - reheating the cool core of a 3 keV cluster from a nuclear outburst at z=0.246. In: The Astrophysical Journal. 2010 ; Vol. 722, No. 2. pp. 1735-1743.

Bibtex

@article{8a05d60335ee47cf9d9dc6038339cdcf,
title = "A Chandra observation of 3C 288 - reheating the cool core of a 3 keV cluster from a nuclear outburst at z=0.246",
abstract = "We present results from a 42 ks Chandra/ACIS-S observation of the transitional FR I/FR II radio galaxy 3C 288 at z = 0.246. We detect ~3 keV gas extending to a radius of ~0.5 Mpc with a 0.5-2.0 keV luminosity of 6.6 × 1043 erg s–1, implying that 3C 288 lies at the center of a poor cluster. We find multiple surface brightness discontinuities in the gas indicative of either a shock driven by the inflation of the radio lobes or a recent merger event. The temperature across the discontinuities is roughly constant with no signature of a cool core, thus disfavoring either the merger cold front or sloshing scenarios. We argue therefore that the discontinuities are shocks due to the supersonic inflation of the radio lobes. If they are shocks, the energy of the outburst is ~1060 erg, or roughly 30{\%} of the thermal energy of the gas within the radius of the shock, assuming that the shocks are part of a front produced by a single outburst. The cooling time of the gas is ~108 yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core.",
author = "D.V. Lal and R.P. Kraft and W.R. Forman and M.J. Hardcastle and C. Jones and P.E.J. Nulsen and D.A. Evans and J.H. Croston and J.C. Lee",
note = "Original article can be found at: http://iopscience.iop.org/0004-637X Copyright American Astronomical Society [Full text of this article is not available in the UHRA]",
year = "2010",
doi = "10.1088/0004-637X/722/2/1735",
language = "English",
volume = "722",
pages = "1735--1743",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS

TY - JOUR

T1 - A Chandra observation of 3C 288 - reheating the cool core of a 3 keV cluster from a nuclear outburst at z=0.246

AU - Lal, D.V.

AU - Kraft, R.P.

AU - Forman, W.R.

AU - Hardcastle, M.J.

AU - Jones, C.

AU - Nulsen, P.E.J.

AU - Evans, D.A.

AU - Croston, J.H.

AU - Lee, J.C.

N1 - Original article can be found at: http://iopscience.iop.org/0004-637X Copyright American Astronomical Society [Full text of this article is not available in the UHRA]

PY - 2010

Y1 - 2010

N2 - We present results from a 42 ks Chandra/ACIS-S observation of the transitional FR I/FR II radio galaxy 3C 288 at z = 0.246. We detect ~3 keV gas extending to a radius of ~0.5 Mpc with a 0.5-2.0 keV luminosity of 6.6 × 1043 erg s–1, implying that 3C 288 lies at the center of a poor cluster. We find multiple surface brightness discontinuities in the gas indicative of either a shock driven by the inflation of the radio lobes or a recent merger event. The temperature across the discontinuities is roughly constant with no signature of a cool core, thus disfavoring either the merger cold front or sloshing scenarios. We argue therefore that the discontinuities are shocks due to the supersonic inflation of the radio lobes. If they are shocks, the energy of the outburst is ~1060 erg, or roughly 30% of the thermal energy of the gas within the radius of the shock, assuming that the shocks are part of a front produced by a single outburst. The cooling time of the gas is ~108 yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core.

AB - We present results from a 42 ks Chandra/ACIS-S observation of the transitional FR I/FR II radio galaxy 3C 288 at z = 0.246. We detect ~3 keV gas extending to a radius of ~0.5 Mpc with a 0.5-2.0 keV luminosity of 6.6 × 1043 erg s–1, implying that 3C 288 lies at the center of a poor cluster. We find multiple surface brightness discontinuities in the gas indicative of either a shock driven by the inflation of the radio lobes or a recent merger event. The temperature across the discontinuities is roughly constant with no signature of a cool core, thus disfavoring either the merger cold front or sloshing scenarios. We argue therefore that the discontinuities are shocks due to the supersonic inflation of the radio lobes. If they are shocks, the energy of the outburst is ~1060 erg, or roughly 30% of the thermal energy of the gas within the radius of the shock, assuming that the shocks are part of a front produced by a single outburst. The cooling time of the gas is ~108 yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core.

U2 - 10.1088/0004-637X/722/2/1735

DO - 10.1088/0004-637X/722/2/1735

M3 - Article

VL - 722

SP - 1735

EP - 1743

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

ER -