Was the Narrow Line Seyfert 1 RGB J0044+193 ever radio loud?

Abstract

We show new radio data and a re-analysis of old data for the Narrow Line Seyfert 1 (NLSy1) galaxy RGB J0044+193. This galaxy has previously been suggested to be both radio loud, and highly variable in the radio. As most NLSy 1 galaxies are radio quiet, this was interpreted as possible evidence that this AGN's jet was beamed toward the observer. This object was probably never either radio loud and nor variable -- the one exception to this rule is a marginal detection of the object in the 1987 Green Bank survey, which we argue may have been spurious.

arXiv comment3 pages, 1 figure, accepted to A&A as a Research Note

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Cited by in corpus (6)

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• The Radio Quiescence of Active Galaxies with High Accretion Rates
• The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy
• Japanese VLBI Network observations of radio-loud narrow-line Seyfert 1 galaxies
• The radio loud narrow-line quasar SDSSJ172206.03+565451.6
• Powerful relativistic jets in narrow-line Seyfert 1 galaxies