Výsledky vyhledávání - "S T {Garrington}"

Searching for Extraterrestrial Intelligence with the Square Kilometre Array

Publikováno v: {Siemion}, A, {Benford}, J, {Cheng-Jin}, J, {Chennamangalam}, J, {Cordes}, J M, {Falcke}, H D E, {Garrington}, S T, Garrett, M, {Gurvits}, L, {Hoare}, M, {Korpela}, E, {Lazio}, J, {Messerschmitt}, D, {Morrison}, I, O'Brien, T, {O'Brien}, T, {Paragi}, Z, {Penny}, A, {Spitler}, L, {Tarter}, J & {Werthimer}, D 2015, Searching for Extraterrestrial Intelligence with the Square Kilometre Array . in Advancing Astrophysics with the Square Kilometre Array .
Siemion, APV; Benford, J; Cheng-Jin, J; Chennamangalam, J; Cordes, J; DeBoer, DR; et al.(2017). Searching for Extraterrestrial Intelligence with the Square Kilometre Array. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/1vf8s9cq
University of Manchester-PURE

The vast collecting area of the Square Kilometre Array (SKA), harnessed by sensitive receivers, flexible digital electronics and increased computational capacity, could permit the most sensitive and exhaustive search for technologically-produced radi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d23802114212a6e31aa06b29d43fbb86
https://pure.manchester.ac.uk/ws/files/51223498/1412_4867v1.pdf

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Gigahertz Peaked Spectrum sources from the Jodrell Bank–VLA Astrometric Survey

Autor: A. Marecki, H. Falcke, J. Niezgoda, S. T. Garrington, A. R. Patnaik

Publikováno v: Astronomy and Astrophysics Supplement Series. 135:273-289

Observations with MERLIN 1 at 408 MHz have been used to establish the low-frequency part of the spectra of more than a hundred compact radio sources taken from the part of the Jodrell Bank{VLA Astrometric Survey limited by 35 75. These sources were s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0538d7a71c7f2da80ee6101ae620df6
https://doi.org/10.1051/aas:1999450

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Polarization observations of the radio cores of AGN -- I. A sample of quasars

Autor: A. R. Kulkarni, S. T. Garrington, D. J. Saikia, Chris Salter, G. F. Holmes

Publikováno v: Monthly Notices of the Royal Astronomical Society. 298:877-887

ABSTRA C T We present total-intensity and linear-polarization observations at a single epoch for a sample of 11 quasars and one BL Lac object. The data were taken with the VLA A array at ll 20, 18, 6 and 2 cm. We examine the variation of the degree o

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https://doi.org/10.1046/j.1365-8711.1998.01699.x

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Asymmetric Depolarization in Double Radio Sources

Autor: G. F. Holmes, S. T. Garrington, R. G. Conway

Publikováno v: Symposium - International Astronomical Union. 140:473-476

The asymmetric depolarization seen in powerful extragalactic double sources with one sided jets may be explained in terms of differential Faraday effects in a halo of gas surrounding the source, provided the halo has a core-radius ~30–100 kpc, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3b3fb9cd6f309a571dbbab3c3cd81f1
https://doi.org/10.1017/s0074180900190916

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Subarcsec optical and radio obsercations of the gravitationally lensed systmen B1422 + 23.1

Autor: S. T. Garrington, A. R. Patnaik, C. E. Akujor

Publikováno v: Nigerian Journal of Physics; Vol 18, No 2 (2006); 191-196

Optical observations of the multiple-component gravitational lens candidate B1422+23.1 using the 2.5m Nordic Optical Telescope and a MERLIN image at 1658 MHz are presented. The radio image at L-band and B, V, R and I band images with a 0.6 arcsec see

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a412aace1c796316a6b7087922eef925
https://doi.org/10.4314/njphy.v18i2.38102

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Structure in the radio counterpart to the 2004 December 27 giant flare from SGR 1806-20

Autor: R. P. Fender, T. W. B. Muxlow, M. A. Garrett, C. Kouveliotou, B. M. Gaensler, S. T. Garrington, Z. Paragi, V. Tudose, J. C. A. Miller-Jones, R. E. Spencer, R. A. M. Wijers, G. B. Taylor

Publikováno v: Monthly Notices of the Royal Astronomical Society, 367(1), L6-L10

On Dec 27, 2004, the magnetar SGR 1806-20 underwent an enormous outburst resulting in the formation of an expanding, moving, and fading radio source. We report observations of this radio source with the Multi-Element Radio-Linked Interferometer Netwo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec315bb40c22a6cbb75d0ab7ed403d5e
http://hdl.handle.net/1887/138135

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Polarimetry of GPS and CSS Sources

Autor: C. Fanti, Richard Schilizzi, R. Fanti, R. E. Spencer, D. J. Saikia, S. T. Garrington, Daniele Dallacasa, A. R. Foley, W. D. Cotton

Publikováno v: Publications Astronomical Society of Australia 20 (2003): 12.
info:cnr-pdr/source/autori:Cotton, W. D.; Dallacasa, D.; Fanti, C.; Fanti, R.; Foley, A. R.; Schilizzi, R. T.; Spencer, R.; Saikia, D. J.; Garrington, S./titolo:Polarimetry of GPS and CSS Sources/doi:/rivista:Publications Astronomical Society of Australia/anno:2003/pagina_da:12/pagina_a:/intervallo_pagine:12/volume:20

The role of radio polarimetry in the understanding of GPS and CSS sources is explored. After an initial discussion of what can be learned from polarimetry, the expectations of a simple evolutionary sequence of GPS/CSO to CSS to FR I/FR II sources are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d2708995176a2855a21aff13c2b2e73
http://www.cnr.it/prodotto/i/5915

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The Unified Schemes and Radio Polarization Studies

Autor: S. T. Garrington, D. J. Saikia, G. F. Holmes

Publikováno v: ESO Astrophysics Symposia ISBN: 9783662223772

In the unified schemes for extragalactic radio sources, the apparent diversity of different types of sources is interpreted to be largely due to similar objects being seen with different angles of inclination to the observer. The orientation dependen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00cfccbbfa5867b4f704a1893df6415f
https://doi.org/10.1007/978-3-540-69648-3_3

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Linking the Radio and Optical Frames with Merlin

Autor: R. W. Argyle, S. T. Garrington, R. J. Davis, L. V. Morrison

Publikováno v: New Horizons from Multi-Wavelength Sky Surveys ISBN: 9780792348030

MERLIN positions of 12 radio stars are used to link the provisional Hipparcos reference frame to the International Celestial Reference Frame. The accuracy of the link using these radio stars is 2.3 milliarcseconds. Further observations are planned to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7a59185a424f3fb3ca2e141bd2a9f5d
https://doi.org/10.1007/978-94-009-1485-8_98

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Extreme Depolarization in Compact Steep Spectrum Sources

Autor: S. T. Garrington, C. E. Akujor

Publikováno v: Extragalactic Radio Sources ISBN: 9780792341222

Compact steep spectrum (CSS) sources show all the features of the powerful extended radio galaxies and quasars but on a scale at least ten times smaller. The debate continues over whether this is primarily due to a difference in age or the result of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::051e5221141bc234785524bdbf0bdd68
https://doi.org/10.1007/978-94-009-0295-4_30

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