Search Results - "Godfrey, L. E. H"

AGN JET KINETIC POWER AND THE ENERGY BUDGET OF RADIO GALAXY LOBES by Godfrey, L E H, Shabala, S S

“…Recent results based on the analysis of radio galaxies and their hot X-ray emitting atmospheres suggest that non-radiating particles dominate the energy budget…”
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A Multiwavelength Study of the High Surface Brightness Hot Spot in PKS 1421–490 by Godfrey, L. E. H, Bicknell, G. V, Lovell, J. E. J, Jauncey, D. L, Gelbord, J, Schwartz, D. A, Marshall, H. L, Birkinshaw, M, Georganopoulos, M, Murphy, D. W, Perlman, E. S, Worrall, D. M

“…Long Baseline Array imaging of the z = 0.663 broadline radio galaxy PKS 1421-490 reveals a 400 pc diameter high surface brightness hot spot at a projected…”
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MEASURING THE JET POWER OF FLAT-SPECTRUM RADIO QUASARS by SHABALA, S. S, SANTOSO, J. S, GODFREY, L. E. H

“…We use frequency-dependent position shifts of flat-spectrum radio cores to estimate the kinetic power of active galactic nucleus (AGN) jets. We find a…”
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Mutual distance dependence drives the observed jet-power–radio-luminosity scaling relations in radio galaxies by Godfrey, L. E. H., Shabala, S. S.

“…The kinetic power of radio jets is a quantity of fundamental importance to studies of the AGN feedback process and radio galaxy physics. A widely used proxy…”
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On the population of remnant Fanaroff–Riley type II radio galaxies and implications for radio source dynamics by Godfrey, L. E. H., Morganti, R., Brienza, M.

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The X-ray ribs within the cocoon shock of Cygnus A by Duffy, R T, Worrall, D M, Birkinshaw, M, Nulsen, P E J, Wise, M W, de Vries, M N, Snios, B, Mathews, W G, Perley, R A, Hardcastle, M J, Rafferty, D A, McNamara, B R, Edge, A C, McKean, J P, Carilli, C L, Croston, J H, Godfrey, L E H, Laing, R A

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SIZE DEPENDENCE OF THE RADIO-LUMINOSITY-MECHANICAL-POWER CORRELATION IN RADIO GALAXIES by Shabala, S S, Godfrey, L E H

“…We examine the relationship between source radio luminosity and kinetic power in active galactic nucleus jets. We show that neglecting various loss processes…”
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RECOVERY OF THE HISTORICAL SN1957D IN X-RAYS WITH CHANDRA by Long, Knox S, Blair, William P, Godfrey, L E H, Kuntz, K D, PLUCINSKY, PAUL P, Soria, Roberto, Stockdale, Christopher J, Whitmore, Bradley C, Winkler, P Frank

“…SN1957D, located in one of the spiral arms of M83, is one of the small number of extragalactic supernovae (SNe) that has remained detectable at radio and…”
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THE MICROARCSECOND STRUCTURE OF AN ACTIVE GALACTIC NUCLEUS JET VIA INTERSTELLAR SCINTILLATION by Macquart, J-p, Godfrey, L E H, Bignall, H E, Hodgson, J A

“…We describe a new tool for studying the structure and physical characteristics of ultracompact active galactic nucleus (AGN) jets and their surroundings with…”
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Science at Very High Angular Resolution with the Square Kilometre Array by Godfrey, L. E. H., Bignall, H., Tingay, S., Harvey-Smith, L., Kramer, M., Burke-Spolaor, S., Miller-Jones, J. C. A., Johnston-Hollitt, M., Ekers, R., Gulyaev, S.

“…Preliminary specifications for the Square Kilometre Array (SKA) call for 25% of the total collecting area of the dish array to be located at distances greater…”
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A MULTI-WAVELENGTH STUDY OF THE JET, LOBES, AND CORE OF THE QUASAR PKS 2101–490 by Godfrey, L E H, Bicknell, G V, Lovell, J E J, Jauncey, D L, GELBORD, J, Schwartz, D A, Perlman, E S, Marshall, H L, Birkinshaw, M, Worrall, D M, Georganopoulos, M, Murphy, D W

“…We present a detailed study of the x-ray, optical, and radio emission from the jet, lobes, and core of the quasar PKS 2101-490 as revealed by new Chandra,…”
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SIZE DEPENDENCE OF THE RADIO-LUMINOSITY-MECHANICAL-POWER CORRELATION IN RADIO GALAXIES by Shabala, S. S., Godfrey, L. E. H.

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Radio spectral properties and jet duty cycle in the restarted radio galaxy 3C388 by Brienza, M, Morganti, R, Harwood, J, Duchet, T, Rajpurohit, K, Shulevski, A, Hardcastle, M. J, Mahatma, V, Godfrey, L. E. H, Prandoni, I, Shimwell, T. W, Intema, H

“…A&A 638, A29 (2020) Restarted radio galaxies represent a unique tool to investigate the duty cycle of the jet activity in Active Galactic Nuclei. Due to a…”
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On the population of remnant FRII radio galaxies and implications for radio source dynamics by Godfrey, L. E. H, Morganti, R, Brienza, M

“…The purpose of this work is two-fold: (1) to quantify the occurrence of ultra-steep spectrum remnant FRII radio galaxies in a 74 MHz flux limited sample, and…”
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LOFAR imaging of Cygnus A – direct detection of a turnover in the hotspot radio spectra by McKean, J. P., Godfrey, L. E. H., Vegetti, S., Wise, M. W., Morganti, R., Hardcastle, M. J., Rafferty, D., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J. W., Brüggen, M., Cerrigone, L., Ciardi, B., de Gasperin, F., Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R. A., Frieswijk, W., Garrett, M. A., Grießmeier, J. M., van Haarlem, M. P., Heald, G., Hoeft, M., Horst, A. J. van der, Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V. I., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D. D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A. G., Reich, W., Röttgering, H. J. A., Rowlinson, A., Scaife, A. M. M., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wucknitz, O., Yatawatta, S., Zarka, P.

“…The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the…”
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Mutual distance dependence drives the observed jet power - radio luminosity scaling relations in radio galaxies by Godfrey, L. E. H, Shabala, S. S

“…The kinetic power of radio jets is a quantity of fundamental importance to studies of the AGN feedback process and radio galaxy physics. A widely used proxy…”
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LOFAR imaging of Cygnus A -- Direct detection of a turnover in the hotspot radio spectra by McKean, J. P, Godfrey, L. E. H, Vegetti, S, Wise, M. W, Morganti, R, Hardcastle, M. J, Rafferty, D, Anderson, J, Avruch, I. M, Beck, R, Bell, M. E, van Bemmel, I, Bentum, M. J, Bernardi, G, Best, P, Blaauw, R, Bonafede, A, Breitling, F, Broderick, J. W, Bruggen, M, Cerrigone, L, Ciardi, B, de Gasperin, F, Deller, A, Duscha, S, Engels, D, Falcke, H, Fallows, R. A, Frieswijk, W, Garrett, M. A, Griessmeier, J. M, van Haarlem, M. P, Heald, G, Hoeft, M, van der Horst, A. J, Iacobelli, M, Intema, H, Juette, E, Karastergiou, A, Kondratiev, V. I, Koopmans, L. V. E, Kuniyoshi, M, Kuper, G, van Leeuwen, J, Maat, P, Mann, G, Markoff, S, McFadden, R, McKay-Bukowski, D, Mulcahy, D. D, Munk, H, Nelles, A, Orru, E, Paas, H, Pandey-Pommier, M, Pietka, M, Pizzo, R, Polatidis, A. G, Reich, W, Rottgering, H. J. A, Rowlinson, A, Scaife, A. M. M, Serylak, M, Shulevski, A, Sluman, J, Smirnov, O, Steinmetz, M, Stewart, A, Swinbank, J, Tagger, M, Thoudam, S, Toribio, M. C, Vermeulen, R, Vocks, C, van Weeren, R. J, Wucknitz, O, Yatawatta, S, Zarka, P

“…MNRAS, 463, 3143 (2016) The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical…”
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The X-ray Ribs Within the Cocoon Shock of Cygnus A by Duffy, R. T, Worrall, D. M, Birkinshaw, M, Nulsen, P. E. J, Wise, M. W, de Vries, M. N, Snios, B, Mathews, W. G, Perley, R. A, Hardcastle, M. J, Rafferty, D. A, McNamara, B. R, Edge, A. C, McKean, J. P, Carilli, C. L, Croston, J. H, Godfrey, L. E. H, Laing, R. A

“…We use new and archival Chandra observations of Cygnus A, totalling $\sim$1.9 Ms, to investigate the distribution and temperature structure of gas lying within…”
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AGN Jet Kinetic Power and the Energy Budget of Radio Galaxy Lobes by Godfrey, L. E. H, Shabala, S. S

“…Recent results based on the analysis of radio galaxies and their hot X-ray emitting atmospheres suggest that non-radiating particles dominate the energy budget…”
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LOFAR MSSS: The Scaling Relation between AGN Cavity Power and Radio Luminosity at Low Radio Frequencies by Kokotanekov, G, Wise, M, Heald, G. H, McKean, J. P, Bîrzan, L, Rafferty, D. A, Godfrey, L. E. H, de Vries, M, Intema, H. T, Broderick, J. W, Hardcastle, M. J, Bonafede, A, Clarke, A. O, van Weeren, R. J, Röttgering, H. J. A, Pizzo, R, Iacobelli, M, Orrú, E, Shulevski, A, Riseley, C. J, Breton, R. P, Nikiel-Wroczyński, B, Sridhar, S. S, Stewart, A. J, Rowlinson, A, van der Horst, A. J, Harwood, J. J, Gürkan, G, Carbone, D, Pandey-Pommier, M, Tasse, C, Scaife, A. M. M, Pratley, L, Ferrari, C, Croston, J. H, Pandey, V. N, Jurusik, W, Mulcahy, D. D

“…A&A 605, A48 (2017) We present a new analysis of the widely used relation between cavity power and radio luminosity in clusters of galaxies with evidence for…”
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