AGN feedback in galaxy group 3C 88: cavities, shock, and jet reorientation
AGN feedback in galaxy group 3C 88: cavities, shock, and jet reorientation
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星系群 3C·88 中的 AGN 反馈:空洞、激波和射流重新定向
DOI:
10.1093/mnras/stz229
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发表时间:
2019
影响因子:
4.8
通讯作者:
Edge, Tim
中科院分区:
文献类型:
--
作者:
Liu, Wenhao;Sun, Ming;Nulsen, Paul;Clarke, Tracy;Sarazin, Craig;Forman, William;Gaspari, Massimo;Giacintucci, Simona;Lal, Dharam Vir;Edge, Tim
We present results from the deepChandraobservation (105 ks), together with new Giant Metrewave Radio Telescope and Very Large Array data of the AGN outburst in the radio-loud galaxy group 3C 88. The system shows a prominent X-ray cavity on the eastern side with a diameter of ∼50 kpc at ∼28 kpc from the nucleus. The total enthalpy of the cavity is 3.8 × 1058erg and the average power required to inflate the X-ray bubble is ∼ 2.0 × 1043erg s−1. From surface brightness profiles, we detect a shock with a Mach number ofM= 1.4 ± 0.2, consistent with the value obtained from temperature jump. The shock energy is estimated to be 1.9 × 1059erg. The size and total enthalpy of the cavity in 3C 88 are the largest known in galaxy groups, as well as the shock energy. The eastern X-ray cavity is not aligned with the radio jet axis. This factor, combined with the radio morphology, strongly suggests jet reorientation in the last tens of million years. The bright rim and arm features surrounding the cavity show metallicity enhancement, suggesting they originated as high metallicity gas from the group centre, lifted by the rising X-ray bubbles. OurChandrastudy of 3C 88 also reveals that galaxy groups with powerful radio AGN can have high cavity power, although deep X-ray observations are typically required to confirm the cavities in galaxy groups.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
J. Croston;R. Kraft;M. Hardcastle;M. Birkinshaw;D. Worrall;P. Nulsen;R. Penna;G. Sivakoff;A. Jordán;N. Brassington;D. Evans;W. Forman;M. Gilfanov;J. Goodger;W. Harris;C. Jones;A. Juett;S. Murray;Somak Raychaudhury;C. Sarazin;R. Voss;K. Woodley
通讯作者:
K. Woodley
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Gitti;P. Nulsen;L. David;B. McNamara;M. Wise
通讯作者:
M. Wise
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
N. Werner;A. Simionescu;E. Million;S. Allen;P. Nulsen;A. V. D. Linden;S. Hansen;H. Boehringer;E. Churazov;A. Fabian;W. Forman;C. Jones;J. Sanders;G. Taylor
通讯作者:
G. Taylor
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Gitti;F. Brighenti;B. McNamara
通讯作者:
B. McNamara
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
P. Scheuer
通讯作者:
P. Scheuer