Large Scale Magnetic Fields in Lens Galaxies

Details Large Scale Magnetic Fields in Lens Galaxies Large Scale Magnetic Fields in Lens Galaxies

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jkas...37..355n&link_type=abstract

Journal of the Korean Astronomical Society, vol. 37, no. 5, pp. 355-359

Astronomy and Astrophysics

Astronomy

2

Gravitation Lens, Magnetic Fields

Scientific paper

Differential Faraday Rotation measurements between the images of same background source, of multiply-imaged gravitational lens systems can be effectively used to provide a valuable probe to establish the existence of large-scale ordered magnetic fields in lensing galaxies as well as galaxy clusters. Estimates of the magnetic field in lens galaxies, based on the radio polarization measurements do not appear to show any clear evidence for evolution with redhsift of the coherent large scale magnetic field between redshift of 0.9 and the present epoch. However, our method clearly establishes the presence of coherent large scale magnetic field in giant ellitpical galaxies.

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