activity
20182024
most citedFundamental differences in the radio properties of red and blue quasars: evolution strongly favoured over orientation

79 citations · 293 across the 10 of their papers we have counts for

collaborators

10 papers

astro-ph.HE2024

The NuSTAR Serendipitous Survey: the 80-month catalog and source properties of the high-energy emitting AGN and quasar population

Claire L. Greenwell, Lizelke Klindt, George B. Lansbury +32

We present a catalog of hard X-ray serendipitous sources detected in the first 80 months of observations by the Nuclear Spectroscopic Telescope Array (NuSTAR). The NuSTAR serendipi…

astro-ph.GA2022★ 13 cited

Host Dark Matter Halos of SDSS Red and Blue Quasars: No Significant Difference in Large-scale Environment

Grayson C. Petter, Ryan C. Hickox, David M. Alexander +6

The observed optical colors of quasars are generally interpreted in one of two frameworks: unified models which attribute color to random orientation of the accretion disk along th…

astro-ph.GA2022★ 26 cited

Fundamental differences in the properties of red and blue quasars: measuring the reddening and accretion properties with X-shooter

V. A. Fawcett, D. M. Alexander, D. J. Rosario +4

We have recently found fundamental differences in the radio properties of red quasars when compared to typical blue quasars. In this paper we use X-shooter data, providing spectral…

astro-ph.GA2021★ 6 cited

How are Red and Blue Quasars Different? The Radio Properties

V. A. Fawcett, D. M. Alexander, D. J. Rosario +1

A non-negligible fraction of quasars are red at optical wavelengths, indicating (in the majority of cases) that the accretion disc is obscured by a column of dust which extinguishe…

astro-ph.GA2021★ 25 cited

Fundamental differences in the radio properties of red and blue quasars: kiloparsec-scale structures revealed by e-MERLIN

D. J. Rosario, D. M. Alexander, J. Moldon +5

Red quasi-stellar objects (QSOs) are a subset of the quasar population with colours consistent with reddening due to intervening dust. Recent work has demonstrated that red QSOs sh…

astro-ph.GA2021★ 53 cited

The multiwavelength properties of red QSOs -- Evidence for dusty winds as the origin of QSO reddening

G. Calistro-Rivera, D. M. Alexander, D. J. Rosario +11

Fundamental differences in the radio properties of red quasars (QSOs), as compared to blue QSOs, have been recently discovered, positioning them as a potential key population in th…

astro-ph.GA2020★ 49 cited

Fundamental differences in the radio properties of red and blue quasars: enhanced compact AGN emission in red quasars

V. A. Fawcett, D. M. Alexander, D. J. Rosario +5

We have recently used the Faint Images of the Radio Sky at Twenty-centimeters (FIRST) survey to show that red quasars have fundamentally different radio properties to typical blue…

astro-ph.GA2020★ 38 cited

Fundamental differences in the radio properties of red and blue quasars: Insight from the LOFAR Two-metre Sky Survey (LoTSS)

D. J. Rosario, V. A. Fawcett, L. Klindt +5

Red quasi-stellar objects (QSOs) are a subset of the luminous end of the cosmic population of active galactic nuclei (AGN), most of which are reddened by intervening dust along the…

astro-ph.GA2019★ 79 cited

Fundamental differences in the radio properties of red and blue quasars: evolution strongly favoured over orientation

Lizelke Klindt, David M. Alexander, David J. Rosario +2

A minority of the optically selected quasar population are red at optical wavelengths due to the presence of dust along the line-of-sight. A key focus of many red quasar studies is…

astro-ph.HE2018★ 4 cited

Chandra Observations of NuSTAR Serendipitous Sources near the Galactic Plane

John A. Tomsick, George B. Lansbury, Farid Rahoui +8

The NuSTAR serendipitous survey has already uncovered a large number of Active Galactic Nuclei (AGN), providing new information about the composition of the Cosmic X-ray Background…