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Unravelling the origin of magnetic fields in galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Despite their ubiquity, there are many open questions regarding galactic and cosmic magnetic fields. Specifically, current observational constraints cannot rule out whether magnetic fields observed in galaxies were generated in the early Universe or are of astrophysical nature.
Debora Sijacki +2 more
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Geophysical & Astrophysical Fluid Dynamics, 1987
The observations of the optical polarization of starlight [1,2] showed large-scale alignment of the vectors which was interpreted to be due to galactic magnetic fields which align interstellar grains [3]. The data on star polarization accumulated over many years (e.g. [4,5,6]) giving in the end a large sample of objects at known distances.
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The observations of the optical polarization of starlight [1,2] showed large-scale alignment of the vectors which was interpreted to be due to galactic magnetic fields which align interstellar grains [3]. The data on star polarization accumulated over many years (e.g. [4,5,6]) giving in the end a large sample of objects at known distances.
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The Astronomy and Astrophysics Review, 1993
Recent years have seen an amazing development in our knowledge of the magnetic fields in the universe. The last ten years were crucial in our realization of the importance of the magnetic fields in galaxies. While a lot of the earlier data on our Galaxy depended on optical observations, the bulk of the recent results depend on radio measurements.
R. Wielebinski, F. Krause
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Recent years have seen an amazing development in our knowledge of the magnetic fields in the universe. The last ten years were crucial in our realization of the importance of the magnetic fields in galaxies. While a lot of the earlier data on our Galaxy depended on optical observations, the bulk of the recent results depend on radio measurements.
R. Wielebinski, F. Krause
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2014
The hadronic constituent of galaxies consists of gas and stars, with only a minor contribution of dust. These components rotate in a gravitational potential made up by stars and dark matter. In spiral galaxies, the gas has a neutral and an ionised phase.
Ulrich Klein, Andrew Fletcher
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The hadronic constituent of galaxies consists of gas and stars, with only a minor contribution of dust. These components rotate in a gravitational potential made up by stars and dark matter. In spiral galaxies, the gas has a neutral and an ionised phase.
Ulrich Klein, Andrew Fletcher
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Magnetic fields in galaxy clusters
Astronomische Nachrichten, 2013AbstractWhile it is established that galaxy clusters host magnetic fields of the order of a few µ G, both, their origin as well as their role in the intracluster medium (ICM) remain unclear. I will review the observational evidence for magnetic fields in galaxy clusters and present various lines of research that study the effects of magnetic fields in ...
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Galaxy Magnetic Fields and Hidden Matter in Galaxies
1987Since there have been several suggestions at this meeting that galaxy magnetic fields might lie at the origin of spiral structure in galaxies, and since there have been a few doubting voices raised concerning the density wave theory of spiral structure, I feel it is appropriate to start by reminding you that there is in fact a fairly well founded ...
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Observations of Magnetic Fields in Galaxies
AIP Conference Proceedings, 2005Magnetic fields play an important role in galaxies. Interstellar magnetic fields are strongest in massive spiral arms of galaxies (20–30 μG) and in nuclear starburst regions (up to 100 μG). Processes related to star formation tangle the field lines, so that little polarization is observed in star‐forming regions.
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The Magnetic Field at the Center of the Galaxy
1990The polarization of the 100 μm emission from the 3 pc dust ring at the center of the Galaxy has been measured at five points. The magnetic field inferred from the measurements lies in the plane of the ring but does not appear to be toroidal. We estimate a field B ≈ 10−2 gauss.
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Solar force-free magnetic fields
Living Reviews in Solar Physics, 2021Thomas Wiegelmann +2 more
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