ICTS:31439

Video URL

Galaxy cluster merger shocks, radio relics and the magnetisation of the intra-cluster medium

Galaxy cluster merger shocks, radio relics and the magnetisation of the intra-cluster medium

(2025). Galaxy cluster merger shocks, radio relics and the magnetisation of the intra-cluster medium. SciVideos. https://youtu.be/0YY3lkMjn5k

Galaxy cluster merger shocks, radio relics and the magnetisation of the intra-cluster medium. SciVideos, Apr. 11, 2025, https://youtu.be/0YY3lkMjn5k 

          @misc{ scivideos_ICTS:31439,
            doi = {},
            url = {https://youtu.be/0YY3lkMjn5k},
            author = {},
            keywords = {},
            language = {en},
            title = {Galaxy cluster merger shocks, radio relics and the magnetisation of the intra-cluster medium},
            publisher = {},
            year = {2025},
            month = {apr},
            note = {ICTS:31439 see, \url{https://scivideos.org/index.php/icts-tifr/31439}}
          }
Matthias Hoeft
Talk numberICTS:31439
Source RepositoryICTS-TIFR
Collection

Abstract

Measurements of magnetic fields at the outskirts of galaxy clusters provide crucial insights into the evolution of cosmic magnetic fields. Radio relics are known to trace merger shocks in galaxy clusters propagating in the periphery of galaxy clusters. Many relics show a very high linear polarisation, which is puzzlingly aligned with the orientation of the relics. In this talk we will briefly review current research on radio relics and what these observations tell us about the structure and evolution of magnetic fields. We use Rotation Measure (RM) synthesis and QU fitting methods to spatially resolve the properties of the dominant components in Faraday space. I will show how these methods allow us to constrain the properties of the magnetic fields in the cluster outskirts through a combined analysis of Faraday depths and depolarisation.