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
openalex +3 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.
Arpita Misra, M. Jamrozy, M. We.zgowiec
semanticscholar +1 more source
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
semanticscholar +1 more source
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
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 ...
D. Lal +3 more
openalex +5 more sources
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
Shocking features in the merging galaxy cluster RXJ0334.2-0111 [PDF]
, 2016 © 2016 The Authors. We present a 66 ks Chandra X-ray observation of the galaxy cluster RXJ0334.2-0111. This deep observation revealed a unique bow shock system associated with a wide angle tail (WAT) radio galaxy and several intriguing substructures. The
Clarke, Tracy +9 more
core +2 more sources
The large scale magnetic field structure of the spiral galaxy NGC 5775 [PDF]
, 2011 In order to better determine the large-scale 3D-structure of magnetic fields in spiral galaxies we present a Faraday rotation analysis of the edge-on spiral galaxy NGC 5775.
Dettmar, Ralf-Jürgen +3 more
core +2 more sources
“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
Cataloguing the radio-sky with unsupervised machine learning: a new approach for the SKA era [PDF]
, 2020 We develop a new analysis approach towards identifying related radio components and their corresponding infrared host galaxy based on unsupervised machine learning methods.
T. Galvin +8 more
semanticscholar +1 more source