Results 1 to 10 of about 36,360 (145)

Simulations of Precessing Jets and the Formation of X-shaped Radio Galaxies [PDF]

The Astrophysical Journal, 2023
Jet precession is sometimes invoked to explain asymmetries in radio galaxy (RG) jets and “X/S/Z-shaped” RGs, caused by the presence of a binary black hole companion to the source active galactic nucleus or by accretion instabilities.
Chris Nolting, Jay Ball, Tri M. Nguyen
doaj   +2 more sources

FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts [PDF]

, 2008
We report optical spectroscopic observations of X-shaped radio sources with the Hobby-Eberly Telescope and Multiple-Mirror Telescope, focused on the sample of candidates from the FIRST survey presented in Paper I (Cheung 2007).
Adelman-McCarthy, Andrés Jordán, Bonning, C. C. Cheung, Cheung, Condon, de Koff, de Vaucouleurs, Fanaroff, Gijs Verdoes Kleijn, Hermine Landt, Komossa, Komossa, Leahy, Leahy, Lehár, Machalski, Miller, Monet, Owen, Rottmann, Saripalli, Schlegel, Stephen E. Healey, Tadhunter, Ulrich, Urry, Zirbel   +27 more
core   +2 more sources

On the origin of X-shaped radio-sources: new insights from the properties of their host galaxies [PDF]

, 2002
A significant fraction of extended radio sources presents a peculiar X-shaped radio morphology: in addition to the classical double lobed structure, radio emission is also observed along a second axis of symmetry in the form of diffuse wings or tails. We
A. Capetti, Blandford, C. Zanni, Capetti, Colella, Dennett-Thorpe, Fanaroff, Fanti, G. Bodo, Harvanek, Klein, Leahy, Murgia, O'Dea, P. Rossi, Rees, S. Massaglia, S. Zamfir, Willis, Wirth, Worrall   +20 more
core   +4 more sources

Orientation and size of the `Z' in `X'-shaped radio galaxies [PDF]

, 2005
Some X-shaped radio galaxies show a Z-symmetric morphology in the less luminous secondary lobes. Within the scenario of a merger between two galaxies, each hosting a supermassive black hole in its center, this structure has been explained before: As the ...
Begelman, Bekki, Biermann, Blandford, Bournaud, Braun, Brown, C. Zier, Caldwell, Charmandaris, Chirvasa, Clarke, Cowie, Danziger, Dennett-Thorpe, Dufour, Dupraz, Dupraz, Ekers, Enβlin, Fanaroff, Gopal-Krishna, Goudfrooij, Gower, Gull, Hernquist, Hibbard, Hibbard, Leahy, Leahy, Malin, Merritt, Mihos, Morganti, Morganti, Murgia, O'Donoghue, Oosterloo, Quinn, Rottmann, Sage, Schiminovich, Swaters, Thilker, Van Gorkom, Van Gorkom, Wang, Wilson, Zier, Zier   +49 more
core   +5 more sources

The Origin of X-shaped Radio Galaxies: Clues from the Z-symmetric Secondary Lobes [PDF]

, 2003
Existing radio images of a few X-shaped radio galaxies reveal Z-symmetric morphologies in their weaker secondary lobes which cannot be naturally explained by either the galactic merger or radio-lobe backflow scenarios, the two dominant models for these X-
Charmandaris V., Fanaroff B., Gopal-Krishna, Gopal-Krishna, , Hogbom J. A., Holloway A. J., Laing R. A., Leahy J. P., Paul J. Wiita, Peter L. Biermann   +9 more
core   +2 more sources

The Abundance of X-Shaped Radio Sources: Implications for the Gravitational Wave Background [PDF]

, 2015
Coalescence of super massive black holes (SMBH's) in galaxy mergers is potentially the dominant contributor to the low frequency gravitational wave background (GWB).
Roberts, David H., Saripalli, Lakshmi, Subrahmanyan, Ravi   +2 more
core   +4 more sources

Hydrodynamic Models of Radio Galaxy Morphology: Winged and X-shaped Sources [PDF]

, 2011
We present three-dimensional hydrodynamic models of radio galaxies interacting with initially relaxed hot atmospheres and explore the significant off-axis radio lobe structures which result under certain conditions.
Hodges-Kluck, Edmund J., Reynolds, Christopher S.   +1 more
core   +2 more sources

CGCG 292-057 - a radio galaxy with merger-modulated radio activity [PDF]

, 2012
We announce the discovery of a unique combination of features in a radio source identified with the merger galaxy CGCG 292-057. The radio galaxy both exhibits a highly complex, X-like structure and shows signs of recurrent activity in the form of double ...
A. Kuźmicz, Andreasyan, Baars, Baldwin, Becker, Bessell, Brocksopp, Bruzual, Buttiglione, Capetti, Cattaneo, Cattaneo, Cheung, Cid, Cohen, Condon, D. Kozieł-Wierzbowska, Dennett-Thorpe, Evans, Fanaroff, G. Stachowski, Gopal-Krishna, Gopal-Krishna, Gregory, Guthrie, Hardcastle, Hardcastle, Healey, Heckman, Heckman, Heckman, Hodges-Kluck, Hodges-Kluck, Hota, Keel, Kewley, Laing, Lal, Lal, Leahy, Leahy, Liu, Liu, Liu, M. Jamrozy, Martel, Mateus, Merritt, Mihos, Murgia, Palimaka, Parma, Parma, Rengelink, S. Zola, Saikia, Saripalli, Schoenmakers, Shimasaku, Spergel, Springel, Stoughton, Strateva, Sánchez, Tremaine, Wilson, Worrall, York   +67 more
core   +2 more sources

X-shaped radio galaxies as observational evidence for the interaction of supermassive binary black holes and accretion disk at pc scale

, 2003
A supermassive black hole binary may form during galaxy mergering. we investigate the interaction of the supermassive binary black holes (SMBBHs) and an accretion disk and show that the detected X-shaped structure in some FRII radio galaxies may be due ...
F. K. Liu, Sudou
core   +2 more sources

The innermost region of the water megamaser radio galaxy 3C403 [PDF]

, 2007
The standard unified scheme of active galactic nuclei requires the presence of high column densities of gas and dust potentially obscuring the central engine.
Braatz, J., Brunthaler, A., Henkel, C., Menten, K. M., Tarchi, A., Weiss, A.   +5 more
core   +2 more sources