Next Article in Journal
Very High-Energy Emission from the Direct Vicinity of Rapidly Rotating Black Holes
Next Article in Special Issue
Magnetizing the Cosmic Web during Reionization
Previous Article in Journal / Special Issue
Science Pipelines for the Square Kilometre Array
Article Menu

Export Article

Open AccessArticle
Galaxies 2018, 6(4), 121; https://doi.org/10.3390/galaxies6040121

Combining Faraday Tomography and Wavelet Analysis

1
Department of Physics, Moscow University, 119992 Moscow, Russia
2
Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Kaluzhskoe Hwy 4, Troitsk, 108840 Moscow, Russia
3
MPI für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
4
Institute of Continuous Media Mechanics, Korolyov str. 1, 614061 Perm, Russia
5
Department of Mechanics and Mathematics, Perm State National Research University, Bukirev str. 15, 614990 Perm, Russia
6
Department of General Physics, Perm State National Research University, Bukirev str. 15, 614990 Perm, Russia
7
CSIRO Astronomy and Space Science, P.O. Box 1130, Bentley, WA 6102, Australia
*
Author to whom correspondence should be addressed.
Received: 3 October 2018 / Revised: 16 November 2018 / Accepted: 19 November 2018 / Published: 22 November 2018
(This article belongs to the Special Issue The Power of Faraday Tomography)
Full-Text   |   PDF [2525 KB, uploaded 26 November 2018]   |  

Abstract

We present a concept for using long-wavelength broadband radio continuum observations of spiral galaxies to isolate magnetic structures that were only previously accessible from short-wavelength observations. The approach is based on combining the RM Synthesis technique with the 2D continuous wavelet transform. Wavelet analysis helps to isolate and recognize small-scale structures which are produced by Faraday dispersion. We find that these structures can trace galactic magnetic arms as illustrated by the case of the galaxy NGC 6946 observed at λ = 17 22 cm. We support this interpretation through the analysis of a synthetic observation obtained using a realistic model of a galactic magnetic field. View Full-Text
Keywords: galactic magnetic field; RM-synthesis; faraday depolarization; wavelet analysis galactic magnetic field; RM-synthesis; faraday depolarization; wavelet analysis
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Sokoloff, D.; Beck, R.; Chupin, A.; Frick, P.; Heald, G.; Stepanov, R. Combining Faraday Tomography and Wavelet Analysis. Galaxies 2018, 6, 121.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Galaxies EISSN 2075-4434 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top