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Capabilities of next generation telescopes for cosmic magnetism

Published online by Cambridge University Press:  03 March 2020

Jeroen M. Stil
Jeroen M. Stil*
Affiliation:
Department of Physics and Astronomy, The University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada email: jstil@ucalgary.ca
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Abstract

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The next generation of radio telescopes offer significant improvement in bandwidth and survey speed. We examine the ability to resolve Faraday thick objects in Faraday space as a function of survey parameters. The necessary combination of λmax and λmin to resolve objects with modest Faraday thick components requires one or two surveys with instantaneous bandwidth 300 MHz to 750 MHz offered by next generation telescopes. For spiral galaxies, bandwidths in excess of 1.5 GHz are required. Correction for Galactic Faraday rotation must account for common gradients of order 10 rad m−2 per degree. How effective a new rotation measure grid is in probing the foreground depends on off-axis polarization calibration.

Keywords

magnetic fieldspolarizationtechniques: polarimeterstechniques: polarimetric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 311 - 314
Copyright
© International Astronomical Union 2020

Footnotes

†

Present address: Department of Physics and Astronomy, The University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.

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