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Related papers: GMRT observations of X-shaped radio sources

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Context. The nature of X-shaped sources is a matter of considerable debate in the literature: it has even been proposed that they provide evidence for black-hole-mergers/spin-reorientation, and therefore constrain the rate of strong…

Analysis of Giant Metrewave Radio Telescope low frequency data for an X-shaped source, 3C 223.1 has revealed an unusual result as discussed earlier by Lal & Rao (2004, MNRAS in press). The radio morphologies of it at 240 and 610 MHz show a…

Astrophysics · Physics 2007-05-23 Dharam Vir Lal , A. Pramesh Rao

Analysis of Giant Metrewave Radio Telescope low frequency data for an X-shaped source, 3C 223.1 has revealed an unusual result. The radio morphologies of it at 240 and 610 MHz show well defined X-shape with a pair of active jets along the…

Astrophysics · Physics 2007-05-23 Dharam Vir Lal , A. Pramesh Rao

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 FIRST-selected…

Astrophysics of Galaxies · Physics 2019-05-08 Dharam V. Lal , Biny Sebastian , C. C. Cheung , A. Pramesh Rao

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…

Astrophysics · Physics 2015-05-13 Dharam Vir Lal , Martin J. Hardcastle , Ralph P. Kraft

Winged radio sources are a small sub-class of extragalactic radio sources which display a pair of low surface brightness radio lobes, known as `wings' aligned at a certain angle with the primary jets. Depending on the location of wings,…

Astrophysics of Galaxies · Physics 2021-04-02 Sabyasachi Pal , Shobha Kumari

A small number of double-lobed radio galaxies (17 from our own census of the literature) show an additional pair of low surface brightness `wings', thus forming an overall `X'-shaped appearance. The origin of the wings in these radio…

Astrophysics · Physics 2008-11-26 C. C. Cheung

The formation mechanism of the enigmatic subclass of radio galaxies, called 'X-shaped radio galaxies' (XRGs), or 'winged' radio galaxies, which account for $\sim 10\%$ of the radio galaxy population, can be effectively constrained using the…

Astrophysics of Galaxies · Physics 2023-07-12 Dusmanta Patra , Ravi Joshi , Gopal-Krishna

X-shaped radio galaxies are defined by their peculiar large-scale radio morphology. In addition to the classical double-lobed structure they have a pair of low-luminosity wings that straddles the nucleus at almost right angles to the active…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Hermine Landt , Chi C. Cheung , Stephen E. Healey

The nature of X-shaped sources is a matter of considerable debate: it has even been proposed that they provide evidence for black hole mergers$ / $spin reorientation, and therefore constrain the rate of strong gravitational wave events…

Cosmology and Nongalactic Astrophysics · Physics 2009-04-20 D. V. Lal , M. J. Hardcastle , R. P. Kraft , C. C. Cheung , A. P. Lobanov , J. A. Zensus , S. Bhatnagar , A. P. Rao

This review explores the field of X-shaped radio galaxies (XRGs), a distinctive subset of winged radio sources that are identified by two pairs of jetted lobes which aligned by a significant angle, resulting in an inversion-symmetric…

Astrophysics of Galaxies · Physics 2024-03-04 Gourab Giri , Christian Fendt , Kshitij Thorat , Gianluigi Bodo , Paola Rossi

We present wide-field upgraded Giant Metrewave Radio Telescope (uGMRT) images of the fields around the X-shaped radio-galaxies (XRGs) 4C32.25, 4C61.23, and MRC 2011-298 obtained at 400 MHz. The observations are calibrated using the extreme…

Astrophysics of Galaxies · Physics 2026-01-14 E. Retana-Montenegro

We conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-Metre Sky Survey (LoTSS DR2). This…

Astrophysics of Galaxies · Physics 2026-04-29 Soumen Kumar Bera , Taotao Fang , Tapan K. Sasmal , M. Kunert-Bajraszewska , Xuelei Chen , Soumen Mondal

A small sub-class of radio galaxies that exhibit a pair of secondary low surface brightness radio lobes oriented at an angle to the primary high surface brightness lobes are known as X-shaped radio galaxies (XRGs). In cases, it is seen that…

Astrophysics of Galaxies · Physics 2024-03-12 Netai Bhukta , Sabyasachi Pal , Sushanta K. Mondal

We present a catalog of 290 "winged" or X-shaped radio galaxies (XRGs) extracted from the latest (2014 December 17) data release of the "Very Large Array Faint Images of the Radio Sky at Twenty centimeter." We have combined these radio…

High Energy Astrophysical Phenomena · Physics 2020-07-23 Xiaolong Yang , Ravi Joshi , Gopal-Krishna , Tao An , Luis C. Ho , Paul J. Wiita , Xiang Liu , Jun Yang , Ran Wang , Xuebing Wu , Xiaofeng Yang

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…

Astrophysics · Physics 2009-11-07 A. Capetti , S. Zamfir , P. Rossi , G. Bodo , C. Zanni , S. Massaglia

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 simmetry in the form of diffuse…

Astrophysics of Galaxies · Physics 2017-10-11 P. Rossi , G. Bodo , A. Capetti , S. Massaglia

We present multifrequency observations with the Giant Metrewave Radio Telescope (GMRT) and the Very Large Array (VLA) of a sample of seventeen largely giant radio sources (GRSs). These observations have either helped clarify the radio…

Astrophysics · Physics 2009-11-10 C. Konar , D. J. Saikia , C. H. Ishwara-Chandra , V. K. Kulkarni

We have conducted low-frequency radio observations with the Giant Metrewave Radio Telescope (GMRT) of 40 new hard X-ray sources discovered by the INTEGRAL satellite. This survey was conducted in order, to study radio emissions from these…

Astrophysics · Physics 2009-11-11 M. Pandey , A. P. Rao , R. Manchanda , P. Durouchoux , C. H. Ishwara-Chandra

X-shaped radio galaxies are a subclass of radio sources that exhibit a pair of secondary low surface brightness radio lobes oriented at an angle to the primary high surface brightness lobes. Sometimes, the secondary low brightened lobes…

Astrophysics of Galaxies · Physics 2021-01-01 Soumen Bera , Sabyasachi Pal , Tapan K. Sasmal , Soumen Mondal
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