Abstract Details
| Name: Sukanta Ghosh Affiliation: NISER Bhubaneswar Conference ID: ASI2025_302 Title : Evolution of Galactic Magnetic Fields and Scaling Relations in Radio Continuum Authors and Co-Authors : Sukanta Ghosh 1, Luke Chamandy 1, Charles Jose 2, Luiz Felippe S. Rodrigues 3 Abstract Type : Poster Abstract Category : Galaxies and Cosmology Abstract : Magnetic fields are ubiquitous in the universe, with galaxies hosting large-scale ordered magnetic fields and small-scale random fields, typically with micro-Gauss (µG) strength. Dynamo theory provides a theoretical framework for the amplification and maintenance of these magnetic fields. The dynamo mechanism depends on various galaxy properties, which vary significantly across galaxies and evolve with time, making it essential to consider these variations while studying their magnetic field evolution. A comprehensive understanding of galactic magnetic fields thus requires statistical analysis of large galaxy samples both locally and at high redshifts. For this study, we examine statistical scaling relations between galactic magnetic field observables and fundamental galaxy properties. By combining GALFORM, a semi-analytic galaxy formation model, with MAGNETIZER, a dynamo model that produces a 1D ISM model over millions of galaxies, we investigate the evolution of magnetic fields in galaxies from a statistical perspective. Our study focuses on synchrotron flux density (SI), a key observable linked to the emission from relativistic electrons spiralling around galactic magnetic fields, and its correlation with galaxy properties such as star formation rate (SFR) and rotational speed (Vrot ) of the flat part of the rotation curve. We aim to generate theoretical predictions and synthetic data that can be directly compared to observations. |