Search Results - "Porcas, R. W"

An asymmetric shock wave in the 2006 outburst of the recurrent nova RS Ophiuchi by O'Brien, T. J, Bode, M. F, Porcas, R. W, Muxlow, T. W. B, Eyres, S. P. S, Beswick, R. J, Garrington, S. T, Davis, R. J, Evans, A

“…Nova outbursts take place in binary star systems comprising a white dwarf and either a low-mass Sun-like star or, as in the case of the recurrent nova RS…”
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The role of luminous substructure in the gravitational lens system MG 2016+112 by More, A., McKean, J. P., More, S., Porcas, R. W., Koopmans, L. V. E., Garrett, M. A.

“…MG 2016+112 is a quadruply imaged lens system with two complete images A and B and a pair of merging partial images in region C as seen in the radio. The…”
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Probing a massive radio galaxy with gravitational lensing by More, A., McKean, J. P., Muxlow, T. W. B., Porcas, R. W., Fassnacht, C. D., Koopmans, L. V. E.

“…The gravitational lens system CLASS B2108+213 has two lensed images separated by 4.56 arcsec. Such a wide image separation suggests that the lens is either a…”
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A search for the third lensed image in JVAS B1030+074 by Zhang, M., Jackson, N., Porcas, R. W., Browne, I. W. A.

“…Central gravitational image detection is very important for the study of the mass distribution of the inner parts (∼100 pc) of lens galaxies. However, the…”
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Changes in the measured image separation of the gravitational lens system PKS 1830-211 by Jin, C., Garrett, M. A., Nair, S., Porcas, R. W., Patnaik, A. R., Nan, R.

“…We present eight epochs of 43-GHz, dual-polarization VLBA observations of the gravitational lens system PKS 1830-211, made over fourteen weeks. A bright,…”
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2016+112: a gravitationally lensed type II quasar by Koopmans, L. V. E., Garrett, M. A., Blandford, R. D., Lawrence, C. R., Patnaik, A. R., Porcas, R. W.

“…Abstract A single-screen model of the gravitational lens system 2016+112 is proposed, that explains recent Hubble Space Telescope (HST) infrared (NICMOS-F160W)…”
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The new gravitational lens system B1030 + 074 by Xanthopoulos, E., Browne, I. W. A., King, L. J., Koopmans, L. V. E., Jackson, N. J., Marlow, D. R., Patnaik, A. R., Porcas, R. W., Wilkinson, P. N.

“…We report the discovery of a new double‐image gravitational lens system, B1030 + 074, which was found during the Jodrell Bank–VLA Astrometric Survey (JVAS). We…”
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Polarization VLBI Observations of the Gravitational Lens System B0218+357 at 8.4 GHz by Kemball, A. J, Patnaik, A. R, Porcas, R. W

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Milliarcsec-scale polarization observations of the gravitational lens B1422+231 by Patnaik, A. R., Kemball, A. J., Porcas, R. W., Garrett, M. A.

“…We present polarization observations of the gravitational lens system B1422+231 made at 8.4 GHz using the VLBA and the 100-m telescope at Effelsberg. All four…”
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Multifrequency radio observations of the gravitational lens system 1938 + 666 by King, L. J., Browne, I. W. A., Muxlow, T. W. B., Narasimha, D., Patnaik, A. R., Porcas, R. W., Wilkinson, P. N.

“…We present the results of multifrequency VLA, MERLIN and VLBI radio observations of the radio source 1938 + 666, and show that its properties are consistent…”
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Wide-field EVN observations of the gravitational lens system 2016 + 112 by Garrett, M. A., Porcas, R. W., Nair, S., Patnaik, A. R.

“…We present a wide-field λ18-cm European VLBI Network (EVN) map of the gravitational lens system 2016 + 112. The map shows the main regions of radio emission…”
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Deep 8.4 GHz VLBI Images of Seven Faint Nuclei in Lobe-dominated Quasars by Hough, D. H, Zensus, J. A, Vermeulen, R. C, Readhead, A. C. S, Porcas, R. W, Rius, A, Rector, T. A, Lenz, G. C, Davis, M. A, Snowdall, J. C

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VLBA observations of the gravitational lens system B0218+357 by Patnaik, A. R., Porcas, R. W., Browne, I. W. A.

“…We present results from high-resolution VLBA observations of the gravitational lens system B0218+357, made at 15 GHz. These reveal clear differences in the…”
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Peculiar variations in the structure of the quasar 3C454.3 by Pauliny-Toth, I. I. K, Porcas, R. W, Zensus, J. A, Kellermann, K. I, Wu, S. Y, Nicolson, G. D, Mantovani, F

“…Following a major outburst at radio wavelengths in the quasar 3C454.3, observations by means of very long baseline interferometry have revealed a superluminal…”
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Superluminal quasar 3C179 with double radio lobes by Porcas, R. W

“…VLBI observations of the quasar 3C179 reveal that its two milli arc second components have an apparent relative velocity of 7.6 times the velocity of light…”
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Superluminal motion in the double-lobed quasar 3C263 by Zensus, J. A., Hough, D. H., Porcas, R. W.

“…The detection of superluminal motion in the quasar 3C263 is reported. The milliarcsecond structure of this source consists of two nearly unresolved components…”
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Global 8.4-GHz VLBI observations of JVAS B0218+357 by Biggs, A. D., Wucknitz, O., Porcas, R. W., Browne, I. W. A., Jackson, N. J., Mao, S., Wilkinson, P. N.

“…In this paper we present new observations of the gravitational lens system JVAS B0218+357 made with a global very long baseline interferometry (VLBI) network…”
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MERLIN observations of superluminal radio sources by Browne, I. W. A, Clark, R. R, Moore, P. K, Muxlow, T. W. B, Wilknson, P. N, Cohen, M. H, Porcas, R. W

“…Hybrid radio maps of nine superluminal extragalactic radio sources and the core-dominated quasar 4C 39.25 are presented which were made with the Jodrell Bank…”
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Combined MERLIN/VLA observations of the superluminal quasar 3C179 by Shone, D. L, Porcas, R. W, Zensus, J. A

“…The first map to be produced by combining data from MERLIN and the VLA is presented. The new map, of the quasar 3C179, is a considerable improvement on maps…”
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Radio and optical observations of the radio galaxy 0831+557 by Whyborn, N. D., Browne, I. W. A., Wilkinson, P. N., Porcas, R. W., Spinrad, H.

“…Radio and optical observations of the high-luminosity radio galaxy 0831+557 are presented. MERLIN and VLBI maps, ranging in resolution from 1.7 arcsec to 15…”
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