Parsec-scale structure in galactic disk and halo, from diffuse radio polarization

2001/09/19 by M. Haverkorn, Haverkorn, M., P. Katgert +3
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysics (astro-ph) #FOS: Physical sciences #Radio Astronomy Observations and Technology #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0109312

4 pages, to appear in the proceedings of the XVIIth IAP Colloquium "Gaseous Matter in Galaxies and Intergalactic Space", Paris, June 2001

arxiv created 2001/09/19 · openalex publication_date 2001/09/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present multi-frequency polarization observations of the diffuse radio synchrotron background modulated by Faraday rotation. No total intensity is observed, indicating that total intensity does not vary on scales below approximately a degree. However, polarized intensity and polarization angle show abundant small-scale structure due to Faraday rotation in the warm ionized disk on small scales. The distribution of Rotation Measures enables us to estimate structure in magnetic field, weighted with electron density, in the warm ionized disk.

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• Faraday Rotation and Depolarization of Galactic Radio Emission