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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2019

Rotation measure synthesis applied to synthetic SKA images of galaxy clusters

F. Loi
M. Murgia
F. Govoni
V. Vacca
A. Bonafede
C. Ferrari
I. Prandoni
L. Feretti
  • Fonction : Auteur
G. Giovannini
H. Li
  • Fonction : Auteur

Résumé

Future observations with next-generation radio telescopes will help us to understand the presence and evolution of magnetic fields in galaxy clusters through determination of the so-called rotation measure (RM). In this work, we applied the RM synthesis technique to synthetic first phase Square Kilometre Array mid frequency element (i.e. the SKA1-MID) radio images of a pair of merging galaxy clusters, measured between 950 and 1750 MHz with a resolution of 10 arcsec and thermal noise of 0.1μJy beam^−1. The results of our RM synthesis analysis are compared with the simulation input parameters. We study two cases: one with radio haloes at the cluster centres and another without. We found that the information obtained with RM synthesis is in general agreement with the input information; however, some discrepancies are present. We characterize them in this work, with the final goal of determining the potential impact of SKA1-MID on the study of cluster magnetic fields.
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Dates et versions

hal-02393587 , version 1 (29-06-2023)

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Citer

F. Loi, M. Murgia, F. Govoni, V. Vacca, A. Bonafede, et al.. Rotation measure synthesis applied to synthetic SKA images of galaxy clusters. Monthly Notices of the Royal Astronomical Society, 2019, 490 (4), pp.4841-4857. ⟨10.1093/mnras/stz2699⟩. ⟨hal-02393587⟩
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