| Issue |
A&A
Volume 433, Number 2, April II 2005
|
|
|---|---|---|
| Page(s) | 531 - 533 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20042312 | |
| Published online | 22 March 2005 | |
Research Note
Was the Narrow Line Seyfert 1 RGB J0044+193 ever radio loud?
1
Astronomical Institute “Anton Pannekoek,” University of Amsterdam, Kruislaan 403, Amsterdam 1098 SJ, The Netherlands e-mail: [tjm;jmiller]@science.uva.nl
2
Department of Physics and Astronomy, University of Southampton, Hampshire SO17 1BJ, UK e-mail: rpf@phys.soton.ac.uk
3
Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK
Received:
4
November
2004
Accepted:
16
December
2004
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.
Key words: accretion, accretion disks / galaxies: jets / quasars: individual: RGB J0044+193 / radio continuum: galaxies / galaxies: nuclei / galaxies: active
© ESO, 2005
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