Diagnostics

Klein, Ulrich; Fletcher, Andrew

doi:10.1007/978-3-319-08942-3_3

Ulrich Klein³ &
Andrew Fletcher⁴

Part of the book series: Springer Praxis Books ((PRAXIS))

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Abstract

In this chapter, we shall treat the main diagnostic tools that we have at hand to investigate interstellar and intergalactic magnetic fields.

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Notes

1.
The IF (intermediate frequency) polarimeter is a so-called quadrature network that allows to measure the Stokes parameters by correlating the orthogonal components E _x, E _y or E _l, E _r such as to yield the desired quantities of Eqs. (2.34)–(2.37).
2.
Even though the low-energy CR spectrum is strongly modulated by the solar wind as mentioned before.
3.
The reason for this is that the response of a dipole to a linearly polarised electromagnetic wave is identical when the dipole is rotated by 180^∘, and any detector of linear polarisation is subject to this principle!
4.
Note that we use upper-case P for the complex polarisation and lower-case p for its modulus!
5.
\(\mathrm{sinc(x):} = \frac{\sin \pi \,x} {\pi \,x}\).

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Authors and Affiliations

Argelander-Institut für Astronomie, Universiät Bonn, Bonn, Germany
Ulrich Klein
School of Mathematics and Statistics, Newcastle University, Newcastle upon Tyne, UK
Andrew Fletcher

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Ulrich Klein
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Andrew Fletcher
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Klein, U., Fletcher, A. (2015). Diagnostics. In: Galactic and Intergalactic Magnetic Fields. Springer Praxis Books. Springer, Cham. https://doi.org/10.1007/978-3-319-08942-3_3

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DOI: https://doi.org/10.1007/978-3-319-08942-3_3
Published: 21 August 2014
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-08941-6
Online ISBN: 978-3-319-08942-3
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