Search Results - "Barthel, Peter D"
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An insight into the extragalactic transient and variable microJy radio sky across multiple decades
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)“…ABSTRACT The mJy variable extragalactic radio sky is known to be broadly non-changing with approximately $3{{\ \rm per\ cent}}$ of persistent radio sources…”
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1245+676 — A CSO/GPS Source being an Extreme Case of a Double-Double Structure
Published in Publications of the Astronomical Society of Australia (2003)“…AGN with the so-called 'double-double' radio structure have been interpreted as restarted AGN where the inner structure is a manifestation of a new phase of…”
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Associated Absorption in Radio Quasars. I. C IV Absorption and the Growth of Radio Sources
Published in The Astrophysical journal (01-04-2002)“…We assess the global properties of associated C IV λλ1548, 1550 absorption lines measured in the spectra of radio-loud quasars drawn from a near-complete,…”
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Summary and key questions
Published in New astronomy reviews (01-11-2006)Get full text
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Infrared-detected AGNs in the Local Universe
Published 16-06-2020“…A&A 640, A68 (2020) Spitzer/IRAC color selection is a promising technique to identify hot accreting nuclei, that is to say AGN, in galaxies. We demonstrate…”
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An insight into the extragalactic transient and variable microJy radio sky across multiple decades
Published 27-09-2019“…The mJy variable extragalactic radio sky is known to be broadly non-changing with approximately $3\%$ of persistent radio sources exhibiting variability which…”
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1245+676 - a CSO/GPS source being an extreme case of a double-double structure
Published 11-09-2002“…AGN with the so-called `double-double' radio structure have been interpreted as restarted AGN where the inner structure is a manifestation of a new phase of…”
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The Radio Properties of Composite LINER/HII Galaxies
Published 14-05-2002“…Astrophys.J.Suppl. 142 (2002) 223-238; Erratum-ibid. 144 (2002) 211 Arcsec-resolution VLA observations -- newly obtained as well as published -- of 40 nearby…”
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Light-year Scale Radio Cores in Four LINER Galaxies
Published 30-01-2002“…The LINER galaxies NGC 2911, NGC 3079, NGC 3998, and NGC 6500 were observed at 5 GHz with the European VLBI Network at a resolution of 5 milliarcsecond and…”
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ISOPHOT observations of 3CR quasars and radio galaxies
Published 09-05-2000“…A&A 359, 523 (2000) In order to check for consistency with the radio-loud AGN unification scheme, ISOPHOT data obtained for two small sets of intermediate…”
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The Nature of Composite LINER/HII Galaxies, As Revealed from High-Resolution VLA Observations
Published 22-02-2000“…Astrophys.J.Suppl. 129 (2000) 93-110 A sample of 37 nearby galaxies displaying composite LINER/HII and pure HII spectra was observed with the VLA in an…”
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Radio imaging of core-dominated high redshift quasars
Published 25-11-1999“…VLA imaging at kiloparsec-scale resolution of sixteen core-dominated radio-loud QSOs is presented. Many objects appear to display variable radio emission and…”
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Infrared emission from radio-loud active nuclei
Published 09-02-1999“…In order to test the unification scheme for double-lobed radio sources, the far-infrared properties of matched samples of radio-galaxies and radio-loud quasars…”
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Nature of 60 micron emission in 3C47, 3C207 and 3C334
Published 18-03-1998“…Astron.Astrophys. 334 (1998) 779 We try to explain the unusually high far-infrared emission seen by IRAS in the double-lobed radio-loud quasars 3C47, 3C207 and…”
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The Far-Infrared Surveyor (FIS) for AKARI
Published 22-08-2007“…The Far-Infrared Surveyor (FIS) is one of two focal plane instruments on the AKARI satellite. FIS has four photometric bands at 65, 90, 140, and 160 um, and…”
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