66 citations · 280 across the 10 of their papers we have counts for
6 papers · 1 filter
Accretion and star formation in 'radio-quiet' quasars
Sarah V. White, Matt J. Jarvis, Eleni Kalfountzou +4
Radio observations allow us to identify a wide range of active galactic nuclei (AGN), which play a significant role in the evolution of galaxies. Amongst AGN at low radio-luminosit…
SDSS J1056+5516: A Triple AGN or an SMBH Recoil Candidate?
Eleni Kalfountzou, M. Santos Lleo, M. Trichas
We report the discovery of a kiloparsec-scale triple supermassive black hole system at : SDSS J1056+5516, discovered by our systematic search for binary quasars. The syste…
Observational evidence that positive and negative AGN feedback depends on galaxy mass and jet power
E. Kalfountzou, J. A. Stevens, M. J. Jarvis +6
Several studies support the existence of a link between the AGN and star formation activity. Radio jets have been argued to be an ideal mechanism for direct interaction between the…
Evidence that the AGN dominates the radio emission in z ~ 1 radio-quiet quasars
Sarah V. White, Matt J. Jarvis, Eleni Kalfountzou +4
In order to understand the role of radio-quiet quasars (RQQs) in galaxy evolution, we must determine the relative levels of accretion and star-formation activity within these objec…
The XXL survey: first results and future
M. Pierre, C. Adami, M. Birkinshaw +108
The XXL survey currently covers two 25 sq. deg. patches with XMM observations of ~10ks. We summarise the scientific results associated with the first release of the XXL data set, t…
Herschel-ATLAS: Far-infrared properties of radio-loud and radio-quiet quasars
E. Kalfountzou, J. A. Stevens, M. J. Jarvis +11
We have constructed a sample of radio-loud and radio-quiet quasars from the Faint Im- ages Radio Sky at Twenty-one centimetres (FIRST) and the Sloan Digital Sky Survey Data Release…