Results 91 to 100 of about 131,428 (235)

NGC 4654: polarized radio continuum emission as a diagnostic tool for a galaxy--cluster interaction [PDF]

, 2006
A recent comparison between deep VLA HI observations and dynamical models of the Virgo cluster spiral galaxy NGC 4654 has shown that only a model involving a combination of a tidal interaction and ram pressure can reproduce the data.
Chyży, K. T., Otmianowska-Mazur, K., Soida, M., Vollmer, B.   +3 more
core   +2 more sources

A GMRT Narrowband vs. Wideband Analysis of the ACT−CL J0034.4+0225 Field Selected from the ACTPol Cluster Sample

Galaxies, 2021
Low frequency radio observations of galaxy clusters are a useful probe of the non-thermal intracluster medium (ICM), through observations of diffuse radio emission such as radio halos and relics.
Sinenhlanhla P. Sikhosana, Kenda Knowles, C. H. Ishwara-Chandra, Matt Hilton, Kavilan Moodley, Neeraj Gupta   +5 more
doaj   +1 more source

CGCG 292-057 - a radio galaxy with merger-modulated radio activity

, 2012
We announce the discovery of a unique combination of features in a radio source identified with the merger galaxy CGCG 292-057. The radio galaxy both exhibits a highly complex, X-like structure and shows signs of recurrent activity in the form of double ...
A. Kuźmicz, Andreasyan, Baars, Baldwin, Becker, Bessell, Brocksopp, Bruzual, Buttiglione, Capetti, Cattaneo, Cattaneo, Cheung, Cid, Cohen, Condon, D. Kozieł-Wierzbowska, Dennett-Thorpe, Evans, Fanaroff, G. Stachowski, Gopal-Krishna, Gopal-Krishna, Gregory, Guthrie, Hardcastle, Hardcastle, Healey, Heckman, Heckman, Heckman, Hodges-Kluck, Hodges-Kluck, Hota, Keel, Kewley, Laing, Lal, Lal, Leahy, Leahy, Liu, Liu, Liu, M. Jamrozy, Martel, Mateus, Merritt, Mihos, Murgia, Palimaka, Parma, Parma, Rengelink, S. Zola, Saikia, Saripalli, Schoenmakers, Shimasaku, Spergel, Springel, Stoughton, Strateva, Sánchez, Tremaine, Wilson, Worrall, York   +67 more
core   +1 more source

Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics

The Astrophysical Journal Supplement Series
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging.
Kyle Finner, M. James Jee, Hyejeon Cho, Kim HyeongHan, Wonki Lee, Reinout J. van Weeren, David Wittman, Mijin Yoon   +7 more
doaj   +1 more source

Radio Galaxy Zoo: host galaxies and radio morphologies derived from visual inspection [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Accepted to MNRAS, 17 pages, 13 figures, 1 table.
Julie Banfield, Julie Banfield, Garret Cotter, Kevin Schawinski, Stanislav S. Shabala, Ray P. Norris, Lucy Fortson, Chris Lintott, Kai Lars Polsterer, Avery F. Garon, Lawrence Rudnick, Enno Middelberg, Hans-Rainer Klöckner, Nick Seymour, Kyle W. Willett, Karen L. Masters, Karen L. Masters, Chris Snyder, O. I. Wong, Anna D. Kapińska, Ian Heywood, Ian Heywood, K. Jacob, K. Borden, Thomas W Jones, W. P. Maksym, Angel R. Lopez-Sanchez, Angel R. Lopez-Sanchez, T. Burchell, Robert Hollow, Matt J. Jarvis, R. Simpson, Edward Paget, Kate Chow, Minnie Mao, Sugata Kaviraj, Heinz Andernach, Brooke Simmons, L. Whyte, Steven P. Bamford   +39 more
openaire   +9 more sources

The host galaxies of Compact Steep Spectrum and Gigahertz-Peaked Spectrum radio sources

, 2008
I will review some of the developments in studies of the host galaxy properties of Compact Steep Spectrum (CSS) and GigaHertz-Peaked Spectrum (GPS) radio sources.
Axon, Batcheldor, Best, de Vries, de Vries, de Vries, de Vries, de Vries, Dickson, Fabian, Fanti, Fanti, Fanti, Gelderman, Heckman, Holt, Holt, Holt, Holt, Inskip, Labiano, Labiano, Lily, Morganti, Morganti, Morganti, Murgia, O'Dea, O'Dea, O'Dea, Orienti, Owsianik, Privon, Rodríguez Zaurín, Siemiginowska, Silk, Smith, Snellen, Snellen, Snellen, Stanghellini, Stanghellini, Tadhunter, Tadhunter, Tadhunter, Wills   +45 more
core   +1 more source

The discovery of a typical radio galaxy at z = 4.88 [PDF]

, 2009
‘The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1745-3933.2009.00715.xIn this Letter, we report the discovery of a z= 4.88 radio galaxy discovered with a new technique which does
Matt J. Jarvis, Hanifa Teimourian, Chris Simpson, Daniel J. B. Smith, Steve Rawlings, David Bonfield, Becker, Best, Blundell, Bower, Brocklehurst, Brookes, Bruzual, Bryant, Carilli, Chambers, Cohen, Condon, Croton, Cruz, Cruz, De Breuck, De Breuck, De Breuck, Dunkley, Dunlop, Eales, Emonts, Fan, Gnedin, Gopal-Krishna, Iliev, Jarvis, Jarvis, Jarvis, Jarvis, Jarvis, Jarvis, Jarvis, Kewley, Lilly, Lonsdale, McCarthy, McLure, Magorrian, Miley, Miley, Oke, Rawlings, Rengelink, Seymour, Shaver, Stiavelli, van Breugel, van Ojik, Venemans, Waddington, Wall, Warren, Willott, Willott, Willott, Wilman, Wilman   +63 more
core   +2 more sources

Weak-lensing Analysis of the Complex Cluster Merger A746 with Subaru/Hyper Suprime-Cam

The Astrophysical Journal
The galaxy cluster A746 ( z = 0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system.
K. HyeongHan, H. Cho, M. James Jee, D. Wittman, S. Cha, W. Lee, K. Finner, K. Rajpurohit, M. Brüggen, W. Forman, C. Jones, R. van Weeren, A. Botteon, L. Lovisari, A. Stroe, P. Domínguez-Fernández, E. O’Sullivan, J. Vrtilek   +17 more
doaj   +1 more source

The Origin and Evolution of Giant Radio Galaxies

Frontiers in Astronomy and Space Sciences, 2022
Giant radio galaxies are arguably the least understood of jetted active galactic nuclei (AGN). We propose that radio galaxies are the product of large mergers that do not involve radio galaxies or radio quasars, such as in merging spiral galaxies, while ...
David Garofalo
doaj   +1 more source

High-Redshift Radio Galaxies [PDF]

Highlights of Astronomy, 1995
Radio galaxies are unique cosmological probes. As with radio-loud quasars, the presence of luminous radio continuum and optical line emission enable radio galaxies to be observed and recognized at large distances, up to z = 4.2. However, unlike the situation for most quasars, their optical emission can be spatially resolved from the ground and studied ...
openaire   +3 more sources