- On detecting the cosmic web and its magnetic field
- Locatelli, Nicola <1992>
Subject
- FIS/05 Astronomia e astrofisica
Description
- Magnetic fields are known to permeate space over a remarkable range of scales, from meter-large bodies up to ~Mpc wide clusters of galaxies. It is still debated whether their origin is either "primordial", involving their early formation in the homogeneous universe, or "astrophysical", i.e. from feedback into the inter-galactic space by the first dense and highly magnetised structures (e.g. stars, galaxies, AGN). Observing galaxy cluster outskirts and filaments of the cosmic web is keys to test the above scenarios, as the current strength and morphology of their evolved magnetic field should correlate with the initial conditions in the most rarefied environments. In this thesis, we push complementary radio-astronomy techniques (namely direct imaging, Faraday rotation and FRB studies) on dedicated data from new generation instruments, in combination with state-of-the-art cosmological simulations, to constrain the properties of the magnetic fields at ~Mpc scale at low redshift. This work provides relevant advances into observational constraints of magnetic fields in cluster outskirts (e.g. 0.4uG
Date
- 2021-05-24
Type
- Doctoral Thesis
- PeerReviewed
Format
- application/pdf
Identifier
urn:nbn:it:unibo-27619
Locatelli, Nicola (2021) On detecting the cosmic web and its magnetic field, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Astrofisica