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pro vyhledávání: '"Kalfountzou, Eleni"'
Autor:
White, Sarah V., Jarvis, Matt J., Kalfountzou, Eleni, Hardcastle, Martin J., Verma, Aprajita, Orjales, Jose M. Cao, Stevens, Jason
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-luminosities is the 'radio-quiet' quasar (RQQ) population, but how they contrib
Externí odkaz:
http://arxiv.org/abs/1912.05863
We report the discovery of a kiloparsec-scale triple supermassive black hole system at $z=0.256$: SDSS J1056+5516, discovered by our systematic search for binary quasars. The system contains three strong emission-line nuclei, which are offset by $<25
Externí odkaz:
http://arxiv.org/abs/1712.03909
Autor:
White, Sarah V., Jarvis, Matt J., Kalfountzou, Eleni, Hardcastle, Martin J., Verma, Aprajita, Orjales, José M. Cao, Stevens, Jason
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 objects. Previous work at low radio flux-densities has shown that accretion
Externí odkaz:
http://arxiv.org/abs/1702.00904
Autor:
Trichas, Markos, Green, Paul, Constantin, Anca, Aldcroft, Tom, Sobolewska, Malgosia, Hyde, Ashley K., Zhou, Hongyan, Kim, Dong-Woo, Haggard, Daryl, Kelly, Brandon, Kalfountzou, Eleni
Striking similarities have been seen between accretion signatures of Galactic X-ray binary (XRB) systems and active galactic nuclei (AGN). XRB spectral states show a V-shaped correlation between X-ray spectral hardness and Eddington ratio as they var
Externí odkaz:
http://arxiv.org/abs/1306.0594
Akademický článek
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Autor:
White, Sarah, Jarvis, Matt, Häußler, Boris, Maddox, Natasha, Kalfountzou, Eleni, Hardcastle, Martin
Active Galactic Nuclei (AGN) and star-forming galaxies are well-traced in the radio part of the electromagnetic spectrum, due to emission at these wavelengths being unaffected by dust obscuration. The key processes involved in producing the radio emi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a99f04497cc03c2a644a3efe63f4c4b
Autor:
Kalfountzou, Eleni
Active galaxies have been in the forefront of astronomic research since their first discovery, at least 50 years ago (e.g. Schmidt, 1963; Matthews & Sandage, 1963). The putative supermassive black hole (SMBH) at their center characterizes their prope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f8ba8d06918304032e700a82b78f38a
http://hdl.handle.net/2299/17004
http://hdl.handle.net/2299/17004
Autor:
Kalfountzou, Eleni
Active galaxies have been in the forefront of astronomic research since their first discovery, at least 50 years ago (e.g. Schmidt, 1963; Matthews & Sandage, 1963). The putative supermassive black hole (SMBH) at their center characterizes their prope
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681995
Autor:
Trichas, Markos, Green, Paul J., Constantin, Anca, Aldcroft, Tom, Kalfountzou, Eleni, Sobolewska, Malgosia, Hyde, Ashley K., Zhou, Hongyan, Kim, Dong-Woo, Haggard, Daryl, Kelly, Brandon C.
Publikováno v:
Astrophysical Journal; 12/1/2013, Vol. 778 Issue 2, p188-199, 12p
