The Chandra View of Nearby X-shaped Radio Galaxies [PDF]
The Astrophysical Journal, 2009 65 pages in pre-print form incl. 9 figures (multi-page), 7 tables, and notes.
Hodges-Kluck, Edmund +3 more
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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.
Arpita Misra, M. Jamrozy, M. We.zgowiec
semanticscholar +1 more source
Merger-triggered AGN activity and binary SMBHs in the local universe: X-shaped radio galaxies and double-nucleus disk galaxies [PDF]
Proceedings of Nuclei of Seyfert galaxies and QSOs - Central engine & conditions of star formation — PoS(Seyfert 2012), 2013 Mar Mezcua +4 more
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Scalable precision wide-field imaging in radio interferometry: I. uSARA validated on ASKAP data [PDF]
Monthly notices of the Royal Astronomical Society, 2023 As Part I of a paper series showcasing a new imaging framework, we consider the recently proposed unconstrained Sparsity Averaging Reweighted Analysis (uSARA) optimisation algorithm for wide-field, high-resolution, high-dynamic range, monochromatic ...
A. Wilber +3 more
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The Unusual Active Galaxy H1821+643 and the Elusive Nature of FRI Quasars [PDF]
Publications of the Astronomical Society of the Pacific, 2022 The moderate spin estimate for the black hole at the center of the cool core cluster H1821+643 motivates the completion of a story about this object’s origin and evolution that was in the making since the work by Blundell & Rawlings over two decades ago ...
D. Garofalo, C. Singh
semanticscholar +1 more source
FIRST “WINGED” AND X-SHAPED RADIO SOURCE CANDIDATES. II. NEW REDSHIFTS [PDF]
, 2006 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 a previous paper.
C. Cheung +4 more
semanticscholar +1 more source
THE ABUNDANCE OF X-SHAPED RADIO SOURCES: IMPLICATIONS FOR THE GRAVITATIONAL WAVE BACKGROUND [PDF]
, 2015 Coalescence of supermassive black holes (SMBHs) in galaxy mergers is potentially the dominant contributor to the low frequency gravitational wave background (GWB).
D. H. Roberts +2 more
semanticscholar +1 more source
GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies [PDF]
The Astronomical Journal, 2019 Abstract We present a low-frequency imaging study of an extended sample of X-shaped radio sources using the Giant Metrewave Radio Telescope (GMRT) at two frequencies (610 and 240 MHz). The sources were drawn from a Very Large Array Radio Images of the Sky at Twenty-Centimeters (FIRST) selected sample and extend an initial GMRT study at ...
Dharam V. Lal +3 more
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NGC 326: X-shaped no more [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present new 144-MHz Low-Frequency Array (LOFAR) observations of the prototypical ‘X-shaped’ radio galaxy NGC 326, which show that the formerly known wings of the radio lobes extend smoothly into a large-scale, complex radio structure.
M. Hardcastle +12 more
semanticscholar +1 more source
“Winged” Radio Sources from the LOFAR Two-meter Sky Survey First Data Release (LoTSS DR1)
Astrophysical Journal Supplement Series, 2022 A small number of extragalactic radio sources disclose a pair of low-surface-brightness radio lobes, known as “wings,” aligned at a certain angle to the primary jets. Such exotic sources are known as “winged” radio sources.
Soumendra Bera +3 more
semanticscholar +1 more source