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http://hdl.handle.net/20.500.12386/24015
Titolo: | Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA | Autori: | Bonafede, A. VAZZA, FRANCO Brüggen, M. Akahori, T. CARRETTI, ETTORE Colafrancesco, S. Feretti, L. Ferrari, C. Giovannini, Gabriele GOVONI, FEDERICA Johnston-Hollitt, M. MURGIA, MATTEO Scaife, A. VACCA, VALENTINA Govoni, F. Rudnick, L. |
Data pubblicazione: | 2015 | Rivista: | POS PROCEEDINGS OF SCIENCE | Titolo del volume in cui è pubblicato il poster: | Advancing Astrophysics with the Square Kilometre Array (AASKA14) | Numero: | 215 | Da pagina:: | 95 | Abstract: | We investigate the possibility for the SKA to detect and study the magnetic fields in galaxy clusters and in the less dense environments surrounding them using Faraday Rotation Measures. To this end, we produce 3-dimensional magnetic field models for galaxy clusters of different masses and in different stages of their evolution, and derive mock rotation measure observations of background radiogalaxies. According to our results, already in phase I, we will be able to infer the magnetic field properties in galaxy clusters as a function of the cluster mass, down to $10^{13}$ solar-masses. Moreover, using cosmological simulations to model the gas density, we have computed the expected rotation measure through shock-fronts that occur in the intra-cluster medium during cluster mergers. The enhancement in the rotation measure due to the density jump will permit to constraint the magnetic field strength and structure after the shock passage. SKA observations of polarised sources located behind galaxy clusters will answer several questions about the magnetic field strength and structure in galaxy clusters, and its evolution with cosmic time. | Titolo del convegno: | Advancing Astrophysics with the Square Kilometre Array (AASKA14) | Luogo del convegno: | Giardini Naxos, Italy | Periodo del convegno: | 9 -13 June, 2014 | URI: | http://hdl.handle.net/20.500.12386/24015 | URL: | https://pos.sissa.it/215/095 | ISSN: | 1824-8039 | ISBN: | 9781909204706 | DOI: | 10.22323/1.215.0095 | Bibcode ADS: | 2015aska.confE..95B | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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