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Updated: Jun 30, 2026
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Published on: July 20, 2022
Magnetic fields in astrophysical objects
1Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, UK. ljs53@damtp.cam.ac.uk
Summary
Weak magnetic fields in astrophysical objects like stars, planets, and accretion discs may be more significant than previously thought. This review explores recent developments and overlooked roles of magnetic fields in cosmic phenomena.
Area of Science:
- Astrophysics
- Plasma Physics
- Geophysics
Background:
- Magnetic fields are fundamental to many astrophysical objects.
- Their precise role in cosmic phenomena has been historically underestimated.
- Weak magnetic fields were often dismissed as dynamically insignificant.
Purpose of the Study:
- To review recent advancements in understanding magnetic fields in stars, planets, and accretion discs.
- To highlight instances where weak magnetic fields play a crucial role.
- To identify future research questions regarding astrophysical magnetic fields.
Main Methods:
- Literature review of recent developments.
- Analysis of case studies suggesting significant roles for weak magnetic fields.
- Synthesis of current understanding and identification of knowledge gaps.
Main Results:
- Recent studies indicate magnetic fields are vital across various scales in astrophysics.
- Evidence suggests weak magnetic fields can significantly influence dynamics in stars, planets, and accretion discs.
- Previously overlooked magnetic field effects are now being recognized.
Conclusions:
- Magnetic fields are critical components in astrophysical systems.
- The influence of weak magnetic fields warrants further investigation.
- Outstanding questions remain regarding the full impact of magnetic fields in the cosmos.
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