Results 31 to 40 of about 102,596 (294)

Compact radio sources and jet-driven AGN feedback in the early Universe: Constraints from integral-field spectroscopy [PDF]

, 2007
To investigate the impact of radio jets during the formation epoch of their massive host galaxies, we present an analysis of two massive, log(M_stel/ M_sun)~10.6 and 11.3, compact radio galaxies at z=3.5, TNJ0205+2242 and TNJ0121+1320.
A. Gilbert, Axon, Barnes, Begelman, Benson, Best, Bicknell, Blundell, Bonnet, Bullock, C. De Breuck, Capetti, Croton, De Breuck, De Breuck, De Breuck, De Breuck, De Breuck, De Young, Di Matteo, Downes, Holt, Holt, Hopkins, Inskip, Inskip, Inskip, Iwamuro, Kauffmann, Laing, M. D. Lehnert, McCarthy, Morganti, Murgia, N. P. H. Nesvadba, Nelson, Nesvadba, Nesvadba, O'Dea, O'Dea, Owsianik, Papadopoulos, Pedlar, Pounds, Readhead, Silk, Sulentic, Tadhunter, Tadhunter, Tadhunter, van Breugel, Villar-Martín, Villar-Martín, Villar-Martín, Villar-Martín, W. van Breugel, Wellman, Willott   +57 more
core   +1 more source

The Photometric and Spectroscopic Properties of Remnant and Restarted Radio Galaxies in the Lockman Hole Field

Galaxies, 2021
Radio galaxies are known to undergo phases of activity, where the stage after the jets have switched off is referred to as the remnant phase. This state can be followed by a restarted phase when the activity reignites. Remnant and restarted radio sources
Nika Jurlin, Raffaella Morganti, Natasha Maddox, Marisa Brienza   +3 more
doaj   +1 more source

Radio AGN in spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Radio AGN in the nearby Universe are more likely to be found in galaxies with early-type morphology, the detection rate in spiral or late-type galaxies (LTGs) being around an order of magnitude lower. We combine the mJy Imaging VLBA Exploration at 20 cm (mJIVE-20) survey with the Sloan Digital Sky Survey, to study the relatively rare population of AGN ...
Kaviraj, Sugata, Shabala, Stanislav S., Deller, Adam T., Middelberg, Enno   +3 more
openaire   +4 more sources

Symmetry in Radio Galaxies [PDF]

Symposium - International Astronomical Union, 1982
One of the most striking properties of the radio galaxies is the predominance of a symmetrical double lobed structure. Any model to explain the energy release and collimation in radio galaxies must be able to produce this symmetry as the normal morphology.
openaire   +2 more sources

Distant FR I radio galaxies in the Hubble Deep Field: implications for the cosmological evolution of radio-loud AGN [PDF]

, 2001
Deep and high resolution radio observations of the Hubble Deep Field and flanking fields have shown the presence of two distant edge-darkened FR I radio galaxies, allowing for the first time an estimate of their high redshift space density.
Baum, Dunlop, Fanaroff, Garrett, Garrett, Gopal-Krishna, I.A.G. Snellen, Jackson, Laing, Ledlow, Lilly, Longair, Muxlow, Owen, P.N. Best, Rengelink, Richards, Ryle, Wall, Williams, Willott, Zirbel   +21 more
core   +2 more sources

Gas Outflows in Radio Galaxies [PDF]

Symposium - International Astronomical Union, 2004
We present a summary of our recent results on gas outflows in radio galaxies. Fast outflows (up to 2000 km s−1) have been detected both in ionized and neutral gas. The latter is particularly surprising as it shows that, despite the extremely energetic phenomena occurring near an AGN, some of the outflowing gas remains, or becomes again, neutral.
Clive Tadhunter, J. Holt, B. H. C. Emonts, Tom Oosterloo, Raffaella Morganti   +4 more
openaire   +4 more sources

Why Are Radio-Galaxies Prolific Producers of Type Ia Supernovae? [PDF]

, 2005
An analysis of SNIa events in early type galaxies from the Cappellaro et al (1999) database provides conclusive evidence that the rate of type Ia Supernovae (SNe) in radio-loud galaxies is about 4 times higher than the rate measured in radio-quiet ...
Bondi H., Cappellaro E., Cappellaro E., Enrico Cappellaro, Filippo Mannucci, Greggio L., Kochhar R. K., Kochhar R. K., Massimo Della Valle, Massimo Turatto, Nino Panagia, Paolo Padovani, Sadler E. M., Sandage A., Srianand R., Tinsley B. M., Tutukov A. V., Tutukov A. V.   +17 more
core   +2 more sources

Clustering of radio galaxies and quasars [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
12 pages, 13 Figures, submitted to ...
E. Donoso, Philip Best, Cheng Li, Timothy M. Heckman, Guinevere Kauffmann   +4 more
openaire   +3 more sources

A closer view of the radio-FIR correlation: disentangling the contributions of star formation and AGN activity [PDF]

, 2010
We extend the Unified Radio Catalog, a catalog of sources detected by various (NVSS, FIRST, WENSS, GB6) radio surveys, and SDSS, to IR wavelengths by matching it to the IRAS Point and Faint Source catalogs.
A. Kimball, Appleton, Bell, Chapman, Condon, Condon, D. A. Riechers, I. Morić, Kartaltepe, Kewley, Kimball, Kovacs, Michałowski, Moshir, Murphy, N. Scoville, Riechers, Sajina, Sargent, Schneider, Smolčić, Smolčić, V. Smolčić, York, Yun, Ž. Ivezić   +25 more
core   +4 more sources

Radio Galaxies—The TeV Challenge [PDF]

Galaxies, 2018
Over the past decade, our knowledge of the γ -ray sky has been revolutionized by ground- and space-based observatories by detecting photons up to several hundreds of tera-electron volt (TeV) energies. A major population of the γ -ray bright objects are active galactic nuclei (AGN) with their relativistic jets pointed along our line-of-sight ...
openaire   +5 more sources