Results 41 to 50 of about 1,097,617 (347)

Galaxy Cluster Environments of Radio Sources

, 2011
Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component radio sources
Abazajian, Ascasibar, Bahcall, Blanc, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Bower, Bradač, Brodwin, Budavári, Burns, Clarke, Condon, Croft, Csabai, Daddi, Dalton, Deltorn, Dickinson, D’Onghia, Elizabeth L. Blanton, Fanaroff, Gal, Garilli, Gladders, Gladders, Gladders, Gómez, Ivezić, Jee, Joshua D. Wing, Koester, Koester, Krick, Lin, Lin, Lin, Lumsden, Martini, McMahon, Menanteau, Miller, Oklopčić, Ostrander, Owen, Oyaizu, Proctor, Reiprich, Roettiger, Sarazin, Schlegel, Smith, Smolčić, Vanderlinde, Vikhlinin, Voges, Wen, York, Zirbel, Zwicky   +63 more
core   +1 more source

The Radio/Optical Catalog of the SSA13 Field [PDF]

, 2006
We present a 1.4-GHz catalog of 810 radio sources (560 sources in the complete sample) with 1.8" resolution found within a 17' radius in the SSA13 field (RA=13h12m,DEC=42d38').
A. J. Barger, Benn C. R., E. A. Richards, E. B. Fomalont, Fanaroff B. L., Garrett M. A., K. I. Kellermann, L. L. Cowie, Moriondo G., Oort J. A., P. Capak, R. A. Windhorst, R. B. Partridge, Sutherland W., Windhorst R. A.   +14 more
core   +3 more sources

Quantifying radio source morphology

Publications of the Astronomical Society of Australia
Abstract The advent of next-generation telescope facilities brings with it an unprecedented amount of data, and the demand for effective tools to process and classify this information has become increasingly important. This work proposes a novel approach to quantify the radio galaxy morphology, through the development of a series of algorithmic ...
Lachlan J. Barnes, Andrew M. Hopkins, Lawrence Rudnick, Heinz Andernach, Michael Cowley, Nikhel Gupta, Ray P. Norris, Stanislav S. Shabala, Tayyaba Zafar   +8 more
openaire   +2 more sources

An Examination of the Optical Substructure of Galaxy Clusters Hosting Radio Sources

, 2013
Using radio sources from the Faint Images of the Radio Sky at Twenty-cm (FIRST) survey, and optical counterparts in the Sloan Digital Sky Survey (SDSS), we have identified a large number of galaxy clusters.
Blanton, Elizabeth L., Wing, Joshua D.
core   +1 more source

Multiband Study of Radio Sources of the RCR Catalogue with Virtual Observatory Tools

Open Astronomy, 2012
We present early results of our multiband study of the RATAN Cold Revised (RCR) catalogue obtained from seven cycles of the “Cold” survey carried with the RATAN-600 radio telescope at 7.6 cm in 1980-1999, at the declination of the SS 433 source.
Zhelenkova O. P., Soboleva N. S., Majorova E. K., Temirova A. V.   +3 more
doaj   +1 more source

A CHIME/FRB Study of Burst Rate and Morphological Evolution of the Periodically Repeating FRB 20180916B

The Astrophysical Journal, 2023
FRB 20180916B is a repeating fast radio burst (FRB) with a 16.3 day periodicity in its activity. In this study, we present morphological properties of 60 FRB 20180916B bursts detected by CHIME/FRB between 2018 August and 2021 December.
Ketan R. Sand, Daniela Breitman, Daniele Michilli, Victoria M. Kaspi, Pragya Chawla, Emmanuel Fonseca, Ryan Mckinven, Kenzie Nimmo, Ziggy Pleunis, Kaitlyn Shin, Bridget C. Andersen, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Tomas Cassanelli, Amanda M. Cook, Alice P. Curtin, Fengqiu Adam Dong, Gwendolyn M. Eadie, B. M. Gaensler, Jane Kaczmarek, Adam Lanman, Calvin Leung, Kiyoshi W. Masui, Mubdi Rahman, Ayush Pandhi, Aaron B. Pearlman, Emily Petroff, Masoud Rafiei-Ravandi, Paul Scholz, Vishwangi Shah, Kendrick Smith, Ingrid Stairs, David C. Stenning   +33 more
doaj   +1 more source

Radio variability properties for radio sources [PDF]

Astronomy & Astrophysics, 2006
In this paper, we used the database of the university of Michigan Radio Astronomy Observatory (UMRAO) at three (4.8 GHz, 8.0 GHZ, and 14.5 GHz) radio frequency to analyze the radio light curves by the power spectral analysis method in search of possible periodicity.
J. H. Fan, Y. Liu, Y. H. Yuan, T. X. Hua, H. G. Wang, Y. X. Wang, J. H. Yang, A. C. Gupta, J. Li, J. L. Zhou, S. X. Xu, J. L. Chen   +11 more
openaire   +2 more sources

The new class of FR0 radio galaxies [PDF]

, 2015
Are the FRI and FRII radio galaxies representative of the radio-loud (RL) AGN population in the local Universe? Recent studies on the local low-luminosity radio sources cast lights on an emerging population of compact radio galaxies which lack extended ...
Allen, Baldi, Baldi, Baldi, Baldi, Baldi, Baldi, Baldwin, Balmaverde, Balmaverde, Balmaverde, Balogh, Best, Bodo, Chai, Chiaberge, Chiaberge, Cielo, Fanaroff, Ghisellini, Kunert-Bajraszewska, Liu, Morganti, Perucho, Perucho, Reynolds, Sadler, Shabala, Shen, Slee, Tingay, Tremaine, Volonteri, Wing   +33 more
core   +2 more sources

A Possible Periodic Rotation Measure Evolution in the Repeating FRB 20220529

The Astrophysical Journal Letters
Fast radio bursts (FRBs) are mysterious millisecond-duration radio transients of extragalactic origin. Some of them repeat, while others apparently do not.
Yi-Fang Liang, Ye Li, Zhen-Fan Tang, Xuan Yang, Song-Bo Zhang, Yuan-Pei Yang, Fa-Yin Wang, Bao Wang, Di Xiao, Qing Zhao, Jun-Jie Wei, Jin-Jun Geng, Jia-Rui Niu, Jun-Shuo Zhang, Guo Chen, Min Fang, Xue-Feng Wu, Zi-Gao Dai, Wei-Wei Zhu, Peng Jiang, Bing Zhang   +20 more
doaj   +1 more source

Diffuse steep-spectrum sources from the 74 MHz VLSS survey

, 2011
Galaxy clusters grow by a sequence of mergers with other clusters and galaxy groups. During these mergers, shocks and/or turbulence are created within the intracluster medium (ICM).
Abazajian, Axford, Baars, Bacchi, Bagchi, Bagchi, Battaglia, Becker, Bell, Bell, Blandford, Blandford, Blasi, Bonafede, Bonafede, Brentjens, Brunetti, Brunetti, Burns, Chandra, Clarke, Cohen, Condon, Cornwell, de Vries, Dennison, Dolag, Drury, Dwarakanath, Ensslin, Enßlin, Enßlin, Ferrari, Giovannini, Giovannini, Giovannini, Gitti, Gitti, Gitti, Govoni, Govoni, Green, H. J. A. Röttgering, Haynes, Higgs, Hoeft, Hoeft, Joncas, Jones, Kempner, Koester, Krymskii, M. Brüggen, Macario, Malkov, Miley, Miniati, Murgia, Petrosian, Pfrommer, R. J. van Weeren, Rengelink, Röttgering, Schlegel, Shen, Skillman, Slee, Slinglend, Snellen, Struble, van Weeren, van Weeren, van Weeren, van Weeren, Venturi, Venturi, Voges, Voges, Wardle, Willott, Zanichelli   +80 more
core   +1 more source