Gravitational Lens Systems to probe Extragalactic Magnetic Fields
D. Narasimha, S. M. Chitre
TL;DR
This paper explores how Faraday rotation measurements in gravitational lens systems can be used to detect large-scale magnetic fields in galaxies and clusters, suggesting the presence of coherent magnetic fields in elliptical galaxies.
Contribution
It demonstrates the potential of gravitational lens systems as tools for probing extragalactic magnetic fields and provides evidence for large-scale magnetic fields in elliptical galaxies.
Findings
Evidence for large-scale magnetic fields in elliptical galaxies
Faraday rotation measurements can detect magnetic coherence in lensing systems
Supports the existence of ordered magnetic fields in galaxy clusters
Abstract
The Faraday rotation measurements of multiply-imaged gravitational lens systems can be effectively used to probe the existence of large-scale ordered magnetic fields in lensing galaxies and galaxy clusters. The available sample of lens systems appears to suggest the presence of a coherent large-scale magnetic field in giant elliptical galaxies somewhat similar to the spiral galaxies.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Pulsars and Gravitational Waves Research · Radio Astronomy Observations and Technology