A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246
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 × 10[superscript 43] erg s[superscript –1], implying that 3C 288 lies at the center...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2015
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| Online Access: | http://hdl.handle.net/1721.1/95820 |
| _version_ | 1811086736394027008 |
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| author | Lal, D. V. Kraft, Ralph P. Forman, W. R. Hardcastle, M. J. Jones, C. Nulsen, P. E. J. Croston, J. H. Lee, J. C. Evans, Daniel A. |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Lal, D. V. Kraft, Ralph P. Forman, W. R. Hardcastle, M. J. Jones, C. Nulsen, P. E. J. Croston, J. H. Lee, J. C. Evans, Daniel A. |
| author_sort | Lal, D. V. |
| collection | MIT |
| description | 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 × 10[superscript 43] erg s[superscript –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 ~10[superscript 60] 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 ~10[superscript 8] yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core. |
| first_indexed | 2024-09-23T13:33:45Z |
| format | Article |
| id | mit-1721.1/95820 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:33:45Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/958202022-09-28T14:40:14Z 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, Ralph P. Forman, W. R. Hardcastle, M. J. Jones, C. Nulsen, P. E. J. Croston, J. H. Lee, J. C. Evans, Daniel A. MIT Kavli Institute for Astrophysics and Space Research Evans, Daniel A. 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 × 10[superscript 43] erg s[superscript –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 ~10[superscript 60] 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 ~10[superscript 8] yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core. United States. National Aeronautics and Space Administration (Smithsonian Astrophysical Observatory. Chandra X-ray Observatory (U.S.). Chandra Award GO8-9111X) United States. National Aeronautics and Space Administration (Smithsonian Astrophysical Observatory. Contract NAS8-03060) Jet Propulsion Laboratory (U.S.) 2015-03-04T20:00:33Z 2015-03-04T20:00:33Z 2010-10 2010-04 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/95820 Lal, D. V., R. P. Kraft, W. R. Forman, M. J. Hardcastle, C. Jones, P. E. J. Nulsen, D. A. Evans, J. H. Croston, and J. C. Lee. “ 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 722, no. 2 (October 4, 2010): 1735–1743. © 2010 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/722/2/1735 Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
| spellingShingle | Lal, D. V. Kraft, Ralph P. Forman, W. R. Hardcastle, M. J. Jones, C. Nulsen, P. E. J. Croston, J. H. Lee, J. C. Evans, Daniel A. A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title | A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title_full | A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title_fullStr | A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title_full_unstemmed | A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title_short | A CHANDRA OBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST at z = 0.246 |
| title_sort | chandra observation of 3c 288 reheating the cool core of a 3 kev cluster from a nuclear outburst at z 0 246 |
| url | http://hdl.handle.net/1721.1/95820 |
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