Results 11 to 20 of about 194,281 (190)

A Chandra Study of the Multi-Component X-ray Emission from the X-shaped Radio Galaxy 3C 403 [PDF]

Astrophys.J. 622 (2005) 149-159, 2005
We present results from a 49.4 ks Chandra/ACIS-S observation of the nearby ($z$=0.059) X-shaped FRII radio galaxy 3C~403. This is the first Chandra observation of an X-shaped radio galaxy, and one of the goals of this pioneering study is to determine the relationship between the X-ray emitting gas and the X-shaped radio morphology.
R. P. Kraft, M. J. Hardcastle, D. M. Worrall, S. S. Murray   +3 more
arxiv   +10 more sources

A DEEP CHANDRA OBSERVATION OF THE X-SHAPED RADIO GALAXY 4C +00.58: A CANDIDATE FOR MERGER-INDUCED REORIENTATION? [PDF]

The Astrophysical Journal, 2010
Although rapid reorientation of a black hole spin axis (lasting less than a few Myr) has been suggested as a mechanism for the formation of wings in X-shaped radio galaxies (XRGs), to date no convincing case of reorientation has been found in any XRG ...
Edmund Hodges‐Kluck, C. S. Reynolds, M. Coleman Miller, C. C. Cheung   +3 more
core   +8 more sources

Bridging the Bondi and Event Horizon Scales: 3D GRMHD Simulations Reveal X-shaped Radio Galaxy Morphology [PDF]

The Astrophysical Journal Letters, 2022
X-shaped radio galaxies (XRGs) produce misaligned X-shaped jet pairs and make up ≲10% of radio galaxies. XRGs are thought to emerge in galaxies featuring a binary supermassive black hole (SMBH), SMBH merger, or large-scale ambient medium asymmetry.
Aretaios Lalakos, Ore Gottlieb, Nicholas Kaaz, Koushik Chatterjee, Matthew Liska, Ian Christie, Alexander Tchekhovskoy, Irina Zhuravleva, E. E. Nokhrina   +8 more
semanticscholar   +5 more sources

X-shaped radio galaxy 3C 223.1: A ‘double boomerang’ with an anomalous spectral gradient [PDF]

Astronomy & Astrophysics, 2022
A comparison of the recent LOFAR 144 MHz map of the radio source 3C 223.1 (J094124.028+394441.95) with the VLA maps at 4.9 GHz and 8.3 GHz that we built based on archival data, establishes this X-shaped radio galaxy (XRG) as a singularly robust case ...
Gopal Krishna, Pratik Dabhade
semanticscholar   +5 more sources

On the origin of X-shaped radio galaxies [PDF]

Research in Astronomy and Astrophysics, 2012
After a brief, critical review of the leading explanations proposed for the small but important subset of radio galaxies showing an X-shaped morphology (XRGs) we propose a generalized model, based on the jet-shell interaction and spin-flip hypotheses ...
Peter L. Biermann, L. Gergely, Paul J. Wiita   +2 more
core   +6 more sources

Hydrodynamical backflow in X-shaped radio galaxy PKS 2014−55 [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
We present MeerKAT 1.28 GHz total-intensity, polarization, and spectral-index images covering the giant (projected length $l \approx 1.57$~Mpc) X-shaped radio source PKS~2014$-$55 with an unprecedented combination of brightness sensitivity and angular ...
W. D. Cotton, K. Thorat, J. J. Condon, B. S. Frank, G I G Józsa, S. V. White, Roger Deane, Nadeem Oozeer, Marcellin Atemkeng, Hertzog L. Bester, B. L. Fanaroff, R S Kupa, O. Smirnov, T. Mauch, V. Krishnan, F. Camilo   +15 more
semanticscholar   +7 more sources

Multifrequency analysis of the radio emission from a post-merger galaxy CGCG 292-057 [PDF]

Monthly notices of the Royal Astronomical Society, 2023
Galaxies exhibiting a specific large-scale extended radio emission, such as X-shaped radio galaxies, belong to a rare class of winged radio galaxies. The morphological evolution of these radio sources is explained using several theoretical models, including galaxy mergers.
Jamrozy, Marek, Misra, Arpita, Weżgowiec, Marek   +2 more
arxiv   +5 more sources

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

Ap.J.(Letters), 810, L6 (2015), 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). IIt was proposed by Merritt and Ekers (2002) that X-shaped radio galaxies are signposts of such coalescences, and that their abundance might be used to predict the magnitude of the ...
Roberts, David H., Saripalli, Lakshmi, Subrahmanyan, Ravi   +2 more
arxiv   +7 more sources

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

Astrophys.J.Suppl.181:548-556,2009, 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). A total of 27 redshifts were successfully obtained, 21 of which are new, including that of a newly identified candidate source
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
arxiv   +5 more sources

"Normal" FRII Radio Galaxies as a Probe of the Nature of X-Shaped Radio Sources [PDF]

Mon.Not.Roy.Astron.Soc.390:1105, 2008, 2008
We present a multiwavelength radio study of a sample of nearby Fanaroff-Riley class II (FRII) radio galaxies, matched with the sample of known X-shaped radio sources in size, morphological properties and redshift, using new Giant Metrewave Radio Telescope (GMRT) data and archival data from the Very Large Array (VLA).
D. Lal, M. J. Hardcastle, Ralph Kraft
arxiv   +6 more sources