Magnetism and Activity of the Sun and StarsJ. Arnaud and N. Meunier (eds)EAS Publications Series, 9 (2003) 21
Fossil stellar magnetic fields: do they exist, does it matter?
Mathematics Department, Manchester University, Manchester M13 9PL, UK
Fossil magnetic fields (i.e. fields that survive
from one stage of
stellar evolution to a significantly later epoch without
being regenerated) have been invoked to explain
phenomena in the Sun, magnetic CP stars, white dwarfs
and neutron stars. The feasibility of such processes is
discussed critically. Estimates are made that suggest that flux survival
through pre-main sequence evolution is more likely to occur in stars with
M > 1 M⊙. Any link between CP star and white dwarf magnetism is argued
to favour the fossil field origin of CP star fields.
© EAS, EDP Sciences, 2003
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