Radio Loud AGNs are Mergers

@article{Chiaberge2015RadioLA,
  title={Radio Loud AGNs are Mergers},
  author={Marco Chiaberge and Roberto Gilli and Jennifer M. Lotz and Colin Norman},
  journal={arXiv: Astrophysics of Galaxies},
  year={2015}
}
We measure the merger fraction of Type 2 radio-loud and radio-quiet active galactic nuclei at z>1 using new samples. The objects have HST images taken with WFC3 in the IR channel. These samples are compared to the 3CR sample of radio galaxies at z>1 and to a sample of non-active galaxies. We also consider lower redshift radio galaxies with HST observations and previous generation instruments (NICMOS and WFPC2). The full sample spans an unprecedented range in both redshift and AGN luminosity. We… Expand
What distinguishes the host galaxies of radio-loud and radio-quiet AGNs?
We compare the optical properties of the host galaxies of radio-quiet (RQ) and radio-loud (RL) Type 2 active galactic nuclei (AGNs) to infer whether the jet production efficiency depends on the hostExpand
The environment of radio galaxies : a signature of AGN feedback at high redshifts.
We use the semi-analytical model of galaxy formation GALFORM to characterize an indirect signature of active galactic nucleus (AGN) feedback in the environment of radio galaxies at high redshifts.Expand
Pair-Matching of Radio-Loud and Radio-Quiet AGNs
Active galactic nuclei (AGNs) are known to cover an extremely broad range of radio luminosities and the spread of their radio-loudness is very large at any value of the Eddington ratio. This impliesExpand
Host galaxies of luminous z ∼ 0.6 quasars: major mergers are not prevalent at the highest AGN luminosities
Galaxy interactions are thought to be one of the main triggers of active galactic nuclei (AGN), especially at high luminosities, where the accreted gas mass during the AGN lifetime is substantial.Expand
The fraction of AGNs in major merger galaxies and its luminosity dependence
We use a phenomenological model which connects the galaxy and AGN populations to investigate the process of AGN triggering through major galaxy mergers at z~0. The model uses stellar mass functionsExpand
An evolutionary sequence of young radio galaxies
We have observed the faintest sample of Gigahertz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources to date, using the Australia Telescope Compact Array. We test the hypothesis that GPSExpand
Tracing the evolution of ultraluminous infrared galaxies into radio galaxies with low frequency radio observations
We present radio observations of ultraluminous infrared galaxies (ULIRGs) using the Giant Metrewave Radio Telescope (GMRT) and combine them with archival multifrequency observations to understandExpand
The radio-loud narrow-line Seyfert 1 galaxy 1H 0323+342 in a galaxy merger
The supermassive black holes (SMBHs) of narrow-line Seyfert 1 galaxies (NLS1s) are at the lower end of the mass function of active galactic nuclei (AGNs) and reside preferentially in late-type hostExpand
Lower-luminosity Obscured AGN Host Galaxies Are Not Predominantly in Major-merging Systems at Cosmic Noon
For over 60 yr, the scientific community has studied actively growing central supermassive black holes (active galactic nuclei, AGNs), but fundamental questions on their genesis remain unanswered.Expand
The Emergence of the X-Ray Luminosity/Cluster Richness Relation for Radio Galaxies
The idea that mergers are more likely in dense groups or clusters coupled with the assumption that such events lead to cold gas flows onto black holes, suggests a direct relationship between theExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 116 REFERENCES
Are luminous radio-loud active galactic nuclei triggered by galaxy interactions?
We present the results of a comparison between the optical morphologies of a complete sample of 46 southern 2 Jy radio galaxies at intermediate redshifts (0.05 < z < 0.7) and those of two controlExpand
Clustering of Radio Galaxies and Quasars
We compute the cross-correlation between a sample of 14 000 radio-loud active galactic nuclei (RLAGN) with redshifts between 0.4 and 0.8 selected from the Sloan Digital Sky Survey and a referenceExpand
Are radio galaxies and quiescent galaxies different? Results from the analysis of HST brightness profiles
We present a study of the optical brightness profiles of early type galaxies, using a number of samples of radio galax- ies and optically selected elliptical galaxies. For the radio galaxy samples -Expand
On the prevalence of radio‐loud active galactic nuclei in brightest cluster galaxies: implications for AGN heating of cooling flows
The prevalence of radio-loud AGN activity in present-day massive halos is determined using a sample of 625 nearby groups and clusters selected from the Sloan Digital Sky Survey. Brightest group andExpand
On the prevalence of radio-loud AGN in brightest cluster galaxies: implications for AGN heating of cooling flows
The prevalence of radio-loud AGN activity in present-day massive halos is determined using a sample of 625 nearby groups and clusters selected from the Sloan Digital Sky Survey. Brightest group andExpand
The dust masses of powerful radio galaxies: clues to the triggering of their activity
We use deep Herschel Space Observatory observations of a 90 per cent complete sample of 32 intermediate-redshift 2Jy radio galaxies (0.05 <z <0.7) with strong emission lines to estimate the dustExpand
The environments of luminous radio galaxies and type-2 quasars
We present the results of a comparison between the environments of (1) a complete sample of 46 southern 2-Jy radio galaxies at intermediate redshifts (0.05 <z< 0.7), (2) a complete sample of 20Expand
Radio Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
We investigate how the total radio luminosity of AGN-powered radio sources depends on their accretion luminosity and the central black hole mass. Our studies cover about 7 orders of magnitude inExpand
The Difference between Radio-loud and Radio-quiet Active Galaxies
The recent development of unified theories of active galactic nuclei (AGNs) has indicated that there are two physically distinct classes of these objects--radio-loud and radio-quiet. DespiteExpand
Quasars, their host galaxies and their central black holes
We present the final results from our deep Hubble Space Telescope (HST) imaging study of the host galaxies of radio-quiet quasars (RQQs), radio-loud quasars (RLQs) and radio galaxies (RGs). WeExpand
...
1
2
3
4
5
...