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相关论文: A binary system of tailed radio galaxies

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The nearby cluster Abell 194 hosts two luminous, distorted radio galaxies. Both reside within the cluster's core region, being separated in projection by only 100 kpc. It is often suggested that tailed radio galaxies such as these reside in…

天体物理学 · 物理学 2009-11-13 I. Sakelliou , M. J. Hardcastle , N. N. Jetha

We report on the discovery of four new radio galaxies with tailed morphology. Tailed radio galaxies are generally found in rich environments, therefore their presence can be used as tracer of a cluster. The radio galaxies were found in the…

宇宙学与河外天体物理 · 物理学 2015-05-13 S. Giacintucci , T. Venturi

Head-tail radio galaxies are characterized by a head, corresponding to an elliptical galaxy, and two radio jets sweeping back from the head, forming an extended structure behind the host galaxy that is moving through the intracluster medium…

宇宙学与河外天体物理 · 物理学 2025-02-10 A. Bushi , A. Botteon , D. Dallacasa , R. J. van Weeren , T. Venturi , M. Brüggen , F. Gastaldello , S. Giacintucci

We present the unique and challenging case of a radio galaxy in Abell 3266 observed as part of the MeerKAT Galaxy Cluster Legacy Survey. It has quasi-periodic bright patches along the tail which connect to never-before-seen thin transverse…

星系天体物理 · 物理学 2021-10-20 Lawrence Rudnick , William Cotton , Kenda Knowles , Konstantinos Kolokythas

Radio halos are faint radio sources usually located at the center of merging clusters of galaxies. These diffuse radio sources are rare, having so far been found only in about 30 clusters of galaxies, suggesting that particular conditions…

宇宙学与河外天体物理 · 物理学 2015-05-14 M. Murgia , F. Govoni , L. Feretti , G. Giovannini

We present new, multiwavelength Very Large Array observations of the 3 radio galaxies in the cluster Abell 119: 0053-015, 0053-016 and 3C 29. The first two radio galaxies, which lie close to the cluster center, show a narrow-angle-tailed…

天体物理学 · 物理学 2007-05-23 L. Feretti , D. Dallacasa , F. Govoni , G. Giovannini , G. B. Taylor , U. Klein

We study the dynamical status of the poor, low X-ray luminous galaxy clusters Abell 610, Abell 725, and Abell 796 (at z=0.1, 0.09, and 0.16, respectively), containing diffuse radio sources (relic, relic, and possible halo, respectively).…

天体物理学 · 物理学 2009-11-13 W. Boschin , R. Barrena , M. Girardi , M. Spolaor

We present the results of our multiwavelength study of two nearby Abell clusters that contain extended tailed radio sources. From our analysis of PSPC X-ray, VLA radio, and optical data, we find strong evidence that these clusters are not…

天体物理学 · 物理学 2009-10-30 Percy L. Gomez , Michael J. Ledlow , Jack O. Burns , Jason Pinkney , John M. Hill

Galaxy clusters have been found to host a range of diffuse, non-thermal emission components, generally with steep, power law spectra. In this work we report on the detection and follow-up of radio halos, relics, remnant radio galaxies, and…

宇宙学与河外天体物理 · 物理学 2021-10-20 S. W. Duchesne , M. Johnston-Hollitt , I. Bartalucci

Tailed radio galaxies are powerful tracers of interactions between active galactic nuclei (AGN) and the intracluster medium (ICM), providing unique insights into cluster dynamics. We present LOw Frequency ARray (LOFAR) 144 MHz and uGMRT 400…

星系天体物理 · 物理学 2026-02-12 Abdul Gani , Roland Timmerman , Leah K. Morabito , Ruta Kale , Satish S. Sonkamble , Arpan Pal , Sravani Vaddi

We report observations of a bright dumb-bell system of galaxies ($z =0.162$) with the upgraded Giant Metrewave Radio Telescope ($u$GMRT), which show that each member of this gravitationally bound pair of galaxies hosts bipolar radio jets…

星系天体物理 · 物理学 2022-05-25 Gopal-Krishna , Ravi Joshi , Dusmanta Patra , Xiaolong Yang , Luis C. Ho , Paul J. Wiita , Amitesh Omar

In this paper we analyze the peculiar radio structure observed across the central region of the galaxy cluster Abell 585 (z=0.12). In the low-resolution radio maps, this structure appears uniform and diffuse on angular scales of ~3 arcmin,…

星系天体物理 · 物理学 2015-06-19 M. Jamrozy , Ł Stawarz , V. Marchenko , A. Kuzmicz , M. Ostrowski , C. C. Cheung , M. Sikora

The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources…

天体物理学 · 物理学 2009-10-31 J. Eilek , P. Hardee , T. Markovic , M. Ledlow , F. Owen

Using radio data at 1.4 GHz from the ATCA we identify five head-tail (HT) galaxies in the central region of the Horologium-Reticulum Supercluster (HRS). Physical parameters of the HT galaxies were determined along with substructure in the…

天体物理学 · 物理学 2009-11-13 Minnie Y. Mao , Melanie Johnston-Hollitt , Jamie B. Stevens , Simon J. Wotherspoon

We report the results of our radio, optical and infra-red studies of a peculiar radio source 4C~35.06, an extended radio-loud AGN at the center of galaxy cluster Abell 407 ($z=0.047$). The central region of this cluster hosts a remarkably…

Using a MeerKAT observation of the galaxy cluster A3562 (a member of the Shapley Supercluster), we have discovered a narrow, long and straight, very faint radio filament, which branches out at a straight angle from the tail of a radio…

宇宙学与河外天体物理 · 物理学 2022-08-03 S. Giacintucci , T. Venturi , M. Markevitch , H. Bourdin , P. Mazzotta , P. Merluzzi , D. Dallacasa , S. Bardelli , S. P. Sikhosana , O. Smirnov , G. Bernardi

Spectral index studies of halos, relics, and radio galaxies provide useful information on their origin and connection with merger processes. We present WSRT multi-wavelength observations of the galaxy cluster Abell 2255 at 25 cm, 85 cm, and…

宇宙学与河外天体物理 · 物理学 2015-05-14 R. F. Pizzo , A. G. de Bruyn

Galaxy clusters are assembled via merging of smaller structures, in a process that generates shocks and turbulence in the intra cluster medium and produces radio diffuse emission in the form of halos and relics. The cluster pair A399-A401…

宇宙学与河外天体物理 · 物理学 2023-05-17 C. D. Nunhokee , G. Bernardi , S. Manti , F. Govoni , A. Bonafede , T. Venturi , D. Dallacasa , M. Murgia , E. Orrú , R. F. Pizzo , O. M. Smirnov , V. Vacca

Abell 3266 is a massive and complex merging galaxy cluster that exhibits significant substructure. We present new, highly sensitive radio continuum observations of Abell 3266 performed with the Australian Square Kilometre Array Pathfinder…

Multifiber optical spectroscopy has been performed on galaxies in the vicinity of strong, nearby radio galaxies. These radio galaxies were selected from the 3CR and B2 catalogs based on their exclusion from the Abell catalog, which is…

天体物理学 · 物理学 2009-11-07 Neal A. Miller , Michael J. Ledlow , Frazer N. Owen , John M. Hill
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