110 citations · 463 across the 12 of their papers we have counts for
12 papers
A Comparison of Photometric Redshift Techniques for Large Radio Surveys
Ray P. Norris, M. Salvato, G. Longo +14
Future radio surveys will generate catalogues of tens of millions of radio sources, for which redshift estimates will be essential to achieve many of the science goals. However, sp…
AGN feedback works both ways
Peter-Christian Zinn, Enno Middelberg, Ray P. Norris +1
Simulations of galaxy growth need to invoke strong negative feedback from active galactic nuclei (AGN) to suppress the formation of stars and thus prevent the over-production of ve…
Radio Continuum Surveys with Square Kilometre Array Pathfinders
Ray P. Norris, J. Afonso, D. Bacon +48
In the lead-up to the Square Kilometre Array (SKA) project, several next-generation radio telescopes and upgrades are already being built around the world. These include APERTIF (T…
Finding New High-Redshift Quasars by Asking the Neighbours
Kai Lars Polsterer, Peter-Christian Zinn, Fabian Gieseke
Quasars with a high redshift (z) are important to understand the evolution processes of galaxies in the early universe. However only a few of these distant objects are known to thi…
X-ray stacking of Lyman break galaxies in the 4\,Ms CDF-S - X-ray luminosities and star formation rates across cosmic time
Peter-Christian Zinn, Stefan Blex, Nicholas Seymour +1
Lyman Break Galaxies (LBGs) are widely thought to be prototypical young galaxies in the early universe, particularly representative of those undergoing massive events of star forma…
The Australia Telescope Large Area Survey: Spectroscopic Catalogue and Radio Luminosity Functions
Minnie Y. Mao, Rob Sharp, Ray P. Norris +9
The Australia Telescope Large Area Survey (ATLAS) has surveyed seven square degrees of sky around the Chandra Deep Field South (CDFS) and the European Large Area ISO Survey - South…
The Australia Telescope Large Area Survey: 2.3 GHz observations of ELAIS-S1 and CDF-S
Peter-Christian Zinn, Enno Middelberg, Ray P. Norris +3
Context. The Australia Telescope Large Area Survey (ATLAS) aims to image a 7 deg2 region centred on the European Large Area ISO Survey - South 1 (ELAIS-S1) field and the Chandra De…
Spectral index properties of milliJansky radio sources
Kate Randall, Andrew Hopkins, Ray Norris +4
At the faintest radio flux densities (S_1.4 < 10 mJy), conflicting results have arisen regarding whether there is a flattening of the average spectral index between a low radio fre…
Supernovae without host galaxies? The low surface brightness host of SN 2009Z
P. -C. Zinn, M. Stritzinger, J. Braithwaite +5
A remarkable fraction of supernovae (SNe) have no obvious host galaxy. Two possible explanations are that (i) the host galaxy is simply not detected within the sensitivity of the a…
Supernovae without host galaxy? - Hypervelocity stars in foreign galaxies
Peter-Christian Zinn, Philipp Grunden, Dominik J. Bomans
Harvesting the SAI supernova catalog, we search for SNe that apparently do not occur within a distinct host galaxy but lie a great distance apart from their assigned host galaxy. A…
Detecting Quasars in Large-Scale Astronomical Surveys
Fabian Gieseke, Kai Lars Polsterer, Andreas Thom +5
We present a classification-based approach to identify quasi-stellar radio sources (quasars) in the Sloan Digital Sky Survey and evaluate its performance on a manually labeled trai…
Infrared-Faint Radio Sources: A Cosmological View - AGN Number Counts, the Cosmic X-Ray Background and SMBH Formation
Peter-Christian Zinn, Enno Middelberg, Edo Ibar
Context. Infrared Faint Radio Sources (IFRS) are extragalactic emitters clearly detected at radio wavelengths but barely detected or undetected at optical and infrared wavelengths,…