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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3833
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dc.contributor.authorSaripalli, Lakshmi-
dc.contributor.authorSubrahmanyan, Ravi-
dc.contributor.authorHunstead, R.W.-
dc.date.accessioned2009-08-04T11:08:47Z-
dc.date.available2009-08-04T11:08:47Z-
dc.date.issued2007-
dc.identifier.citationProceedings of the IAU Symposium 238: Black holes from stars to galaxies - across the range of masses. Eds. V Karas & G Matt. p441, Cambridge, 2007en
dc.identifier.issnE-ISSN: 1743-9221-
dc.identifier.issnP-ISSN: 1743-9213-
dc.identifier.urihttp://hdl.handle.net/2289/3833-
dc.descriptionRestricted Access.en
dc.description.abstractEpisodic activity in super-massive black holes is shown by radio galaxies exhibiting ‘double-double’ radio morphologies (Subrahmanyan et al. 1996, Schoenmakers et al. 2000). Spectacular examples showing a renewal of beam activity in the form of new beams emerging within relic radio lobes of previous activity have placed the phenomenon of recurrence in AGN outflows on a firm footing. By using the SUMSS and WENSS GRG samples, we infer that on timescales of order a few million years, low luminosity radio sources are more likely to exhibit episodic behaviour in the accretion on to their supermassive black holes as compared to the more powerful radio galaxies.en
dc.language.isoenen
dc.publisherCambridge University Press for the IAUen
dc.relation.urihttp://adsabs.harvard.edu/abs/2007IAUS..238..441Sen
dc.relation.urihttp://dx.doi.org/10.1017/S1743921307005856en
dc.rights2007 International Astronomical Unionen
dc.subjectGalaxies; activeen
dc.subjectgalaxies: nuclei – accretionen
dc.titleEpisodic ejection from super-massive black holesen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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