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GALACTIC MAGNETISM: Recent Developments and Perspectives
Abstract
▪ Abstract We discuss current observational and theoretical knowledge of magnetic fields, especially the large-scale structure in the disks and halos of spiral galaxies. Among other topics, we consider the enhancement of global magnetic fields in the interarm regions, magnetic spiral arms, and representations as superpositions of azimuthal modes, emphasizing a number of unresolved questions. It is argued that a turbulent hydromagnetic dynamo of some kind and an inverse cascade of magnetic energy gives the most plausible explanation for the regular galactic magnetic fields. Primordial theory is found to be unsatisfactory, and fields of cosmological origin may not even be able to provide a seed field for a dynamo. Although dynamo theory has its own problems, the general form of the dynamo equations appears quite robust. Finally, detailed models of magnetic field generation in galaxies, allowing for factors such as spiral structure, starbursts, galactic winds, and fountains, are discussed and confronted with observations.
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Citations
Cited by
Astrophysical magnetic fields and nonlinear dynamo theory
Brandenburg, A., & Subramanian, K. (2005) · Physics Reports · doi:10.1016/j.physrep.2005.06.005 · Cited by 1,640
Self-citationThree‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Polarization Analysis
Page, L., Hinshaw, G., Komatsu, E., Nolta, M. R., Spergel, D. N., Bennett, C. L., Barnes, C., Bean, R., Dore, O., Dunkley, J., et al. (2007) · The Astrophysical Journal Supplement Series · doi:10.1086/513699 · Cited by 1,380
First results from the IllustrisTNG simulations: radio haloes and magnetic fields
Marinacci, F., Vogelsberger, M., Pakmor, R., Torrey, P., Springel, V., Hernquist, L., Nelson, D., Weinberger, R., Pillepich, A., Naiman, J., et al. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty2206 · Cited by 1,084
The interstellar environment of our galaxy
Ferrière, K. M. (2001) · Reviews of Modern Physics · doi:10.1103/revmodphys.73.1031 · Cited by 1,019
MAGNETIC FIELDS IN CLUSTERS OF GALAXIES
GOVONI, F., & FERETTI, L. (2004) · International Journal of Modern Physics D · doi:10.1142/s0218271804005080 · Cited by 486
Metadata
- Authors
- Beck, R., Brandenburg, A., Moss, D., Shukurov, A., & Sokoloff, D.
- Venue
- Annual Review of Astronomy and Astrophysics
- Publisher
- Annual Reviews
- Published
- 1996-09
- Volume
- 34
- Issue
- 1
- Pages
- 155-206
- ISSN
- 0066-4146 (ISSN-L)
- 1545-4282
- OpenAlex
- W2137906322
- Cited by
- 1,004
- References
- 0
- FWCI
- 1.82
- Type
- journal article
- Language
- en
- Open access
- closed
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- Beck, R., Brandenburg, A., Moss, D., Shukurov, A., & Sokoloff, D. (1996). GALACTIC MAGNETISM: Recent Developments and Perspectives. Annual Review of Astronomy and Astrophysics. https://doi.org/10.1146/annurev.astro.34.1.155
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
