Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/24134
Title: | Non-thermal emission from galaxy clusters: feasibility study with SKA | Authors: | Ferrari, C. Dabbech, A. Smirnov, O. Makhathini, S. Kenyon, J. S. MURGIA, MATTEO GOVONI, FEDERICA Mary, D. Slezak, E. VAZZA, FRANCO BONAFEDE, ANNALISA Brugger, M. Johnston-Hollitt, M. Dehghan, S. Feretti, L. Giovannini, Gabriele VACCA, VALENTINA Wise, M. W. GITTI, MYRIAM Arnaud, M. Pratt, G. Zarb Adami, K. Colafrancesco, S. |
Issue Date: | 2015 | Journal: | POS PROCEEDINGS OF SCIENCE | Volume: | Advancing Astrophysics with the Square Kilometre Array (AASKA14) | Number: | 215 | First Page: | 75 | Abstract: | Galaxy clusters are known to host a variety of extended radio sources: tailed radio galaxies whose shape is modelled by the interaction with the intra-cluster medium (ICM); radio bubbles filling cavities in the ICM distribution and rising buoyantly through the thermal gas; diffuse giant radio sources ("halos" and "relics") revealing the presence of relativistic electrons and magnetic fields in the intra-cluster volume. It is currently the subject of an active debate how the non-thermal components that we observe at radio wavelengths affect the physical properties of the ICM and depend on the dynamical state of galaxy clusters. In this work we start our SKA1 feasibility study of the "radio cluster zoo" through simulations of a typical radio-loud cluster, hosting several bright tailed radio galaxies and a diffuse radio halo. Realistic simulations of SKA1 observations are obtained through the MeqTrees software. A new deconvolution algorithm, based on sparse representations and optimised for the detection of faint diffuse astronomical sources, is tested and compared to the classical CLEAN method. | Conference Name: | Advancing Astrophysics with the Square Kilometre Array (AASKA14) | Conference Place: | Giardini Naxos, Italy | Conference Date: | 9 -13 June, 2014 | URI: | http://hdl.handle.net/20.500.12386/24134 | URL: | https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=215 | ISSN: | 1824-8039 | ISBN: | 978-1-909204-70-6 | DOI: | 10.22323/1.215.0075 | Bibcode ADS: | 2015aska.confE..75F | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
AASKA14_075.pdf | PDF editoriale | 3.94 MB | Adobe PDF | View/Open |
Page view(s)
55
checked on Apr 25, 2024
Download(s)
14
checked on Apr 25, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.