B_gg revisited: The environments of low-excitation radio galaxies and unified models [PDF]
Astron.Astrophys. 414 (2004) 927-929, 2003 Recent measurements of the galaxy clustering environments around intermediate-redshift radio sources have suggested a systematic environmental difference between radio galaxies and radio-loud quasars, in contradiction to the predictions of simple unified models for the two classes of object. I show that the apparent difference arises mainly as a result
arxiv +1 more source
LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift [PDF]
, 2015 Remnant radio galaxies represent the final "dying" phase of radio galaxy evolution, in which the jets are no longer active. Due to their rarity in flux limited samples and the difficulty of identification, this "dying" phase remains poorly understood and
M. Brienza +16 more
semanticscholar +1 more source
Empirical Constraints on the Origin of Fast Radio Bursts: Volumetric Rates and Host Galaxy Demographics as a Test of Millisecond Magnetar Connection [PDF]
, 2017 The localization of the repeating fast radio burst (FRB) 121102 to a low-metallicity dwarf galaxy at z = 0.193, and its association with a luminous quiescent radio source, suggests the possibility that FRBs originate from magnetars, formed by the unusual
M. Nicholl +6 more
semanticscholar +1 more source
Radio and spectroscopic properties of miniature radio galaxies: revealing the bulk of the radio-loud AGN population [PDF]
, 2009 We explore radio and spectroscopic properties of a sample of 14 miniature radio galaxies, i.e. early-type core galaxies hosting radio-loud AGN of extremely low radio power, 10^(27-29) erg s^(-1) Hz^(-1) at 1.4 GHz. Miniature radio galaxies smoothly extend the relationships found for the more powerful FRI radio galaxies between emission line, optical ...
arxiv +1 more source
A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). VII. Redshift Evolution of Radio Galaxy Environments at z=0.3-1.4 [PDF]
, 2022 We examine the redshift evolution of density environments around 2,163 radio galaxies with the stellar masses of $\sim10^{9}-10^{12} M_\odot$ between redshifts of $z=0.3-1.4$, based on the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) and Faint Images of the Radio Sky at Twenty-cm (FIRST).
arxiv +1 more source
Galaxy Evolution in the Radio Band: The Role of Star-forming Galaxies and Active Galactic Nuclei [PDF]
, 2017 We investigate the astrophysics of radio-emitting star-forming galaxies and active galactic nuclei (AGNs) and elucidate their statistical properties in the radio band, including luminosity functions, redshift distributions, and number counts at sub-mJy ...
C. Mancuso +8 more
semanticscholar +1 more source
On The Parent Population of Radio Galaxies and the FRI - FRII Dichotomy [PDF]
, 2001 We test the hypothesis that radio galaxies are a random subset of otherwise normal elliptical galaxies. Starting with the observed optical luminosity functions for elliptical galaxies, we show that the probability of an elliptical forming a radio source is a continuous, increasing function of optical luminosity, proportional to L squared.
arxiv +1 more source
Rapidly growing black holes and host galaxies in the distant Universe from the Herschel Radio Galaxy Evolution Project [PDF]
, 2014 We present results from a comprehensive survey of 70 radio galaxies at redshifts 1 10(12) L-circle dot) or hyper-luminous (L-tot(IR) > 10(13) L-circle dot) infrared galaxies. We fit the infrared SEDs with a set of empirical templates which represent dust
G. Drouart +16 more
semanticscholar +1 more source
The nuclear properties and extended morphologies of powerful radio galaxies: the roles of host galaxy and environment [PDF]
, 2017 Powerful radio galaxies exist as either compact or extended sources, with the extended sources traditionally classified by their radio morphologies as Fanaroff--Riley (FR) type I and II sources. FRI/II and compact radio galaxies have also been classified
H. Miraghaei, P. Best
semanticscholar +1 more source
Radio galaxy populations and the multitracer technique: pushing the limits on primordial non-Gaussianity [PDF]
, 2014 We explore the use of different radio galaxy populations as tracers of different mass halos and therefore, with different bias properties, to constrain primordial nonGaussianity of the local type.
L. Ferramacho +3 more
semanticscholar +1 more source