Extended radio sources and elliptical galaxies. III - Optical positions for galaxy centers

Goodson, R. E.; Palimaka, J. J.; Bridle, A. H.

doi:10.1086/112518

Cited by 4 publications

(2 citation statements)

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“…subtracted, exposure-corrected, Gaussian-smoothed Chandra ACIS-S image. The core is the brightest, most compact radio feature (Bridle et al 1989) and coincides with the optical position of the nucleus (Goodson et al 1979). It has a flux density, S 4.9 GHz , of 12.68 ±0.07 mJy (1 mJy = 10 −26 ergs s −1 cm −2 Hz −1 ).…”

Section: Compact Componentsmentioning

confidence: 53%

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ACHANDRAOBSERVATION OF 3C 288—REHEATING THE COOL CORE OF A 3 keV CLUSTER FROM A NUCLEAR OUTBURST atz= 0.246

Lal

Kraft

Forman

et al. 2010

ApJ

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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 43 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 ∼10 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 8 yr, so that the energy deposited by the nuclear outburst could have reheated and efficiently disrupted a cool core.

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Section: Compact Componentsmentioning

confidence: 53%

“…The radio source 3C 288 is identified with an elliptical galaxy with m v = 18.3 (M v = −22.08, Goodson et al 1979). It is the archetypal example of a transitional FR I/FR II ('jetted double') radio galaxy (Fanaroff & Riley 1974).…”

Section: Introductionmentioning

confidence: 99%