John Oonk

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Massive outflows driven by active galactic nuclei are widely recognized to have a key role in the evolution of galaxies, by heating the ambient gas, expelling it from the nuclear regions, and thereby affecting the star-formation histories of the galaxy bulges. It has been proposed that the powerful jets of relativistic particles (such as electrons) launched(More)
The Open University's repository of research publications and other research outputs LOFAR Low-Band antenna observations of the 3C 295 and Botes fields: source counts and ultra-steep spectrum sources Journal Article (2014). LOFAR Low-Band antenna observations of the 3C 295 and Botes fields: source counts and ultra-steep spectrum sources. Astrophysical(More)
Supermassive black holes in galaxy centres can grow by the accretion of gas, liberating energy that might regulate star formation on galaxy-wide scales. The nature of the gaseous fuel reservoirs that power black hole growth is nevertheless largely unconstrained by observations, and is instead routinely simplified as a smooth, spherical inflow of very hot(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. ABSTRACT We present the first detection of carbon radio recombination line absorption along the line of sight to(More)
The Open University's repository of research publications and other research outputs LOFAR Low-Band antenna observations of the 3C 295 and Botes fields: source counts and ultra-steep spectrum sources Journal Article (2014). LOFAR Low-Band antenna observations of the 3C 295 and Botes fields: source counts and ultra-steep spectrum sources. Astrophysical(More)
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