page_title: Magnetic braking
hierarchical_section_title: Magnetic braking
caption_attribution_description: English: Illustration of the fields in the corona
context_page_description: Magnetic braking is a theory explaining the loss of stellar angular momentum due to material getting captured by the stellar magnetic field and thrown out at great distance from the surface of the star. It plays an important role in the evolution of binary star systems.
context_section_description: Magnetic braking is a theory explaining the loss of stellar angular momentum due to material getting captured by the stellar magnetic field and thrown out at great distance from the surface of the star. It plays an important role in the evolution of binary star systems.
caption: The magnetic field lines rotate together with the Sun as a solid object. Ionized material carried along the field lines will at some point 
    
      
        
          
            r
            
              c
            
          
        
      
      {\displaystyle r_{c}}
    
   escape the magnetic field lines and thus take away the Sun's angular momentum
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