A&A 371, 963-972 (2001)
DOI: 10.1051/0004-6361:20010450
The birth of strange stars and their dynamo-originated magnetic fields
R. X. Xu1, 2 and F. H. Busse21 Beijing Astrophysical Center and Astronomy Department, Peking University, Beijing 100871, PR China
2 Theoretical Physics IV, University of Bayreuth, 95440 Bayreuth, Germany
e-mail: Friedrich.Busse@uni-bayreuth.de
(Received 5 October 2000 / Accepted 12 March 2001 )
Abstract
It is shown that protostrange stars (PSSs) can be convective and
that there are two possible scenarios describing their turbulence.
Besides the local turbulence on the scale which is less than the
mean free path of neutrinos, large-scale (~1 km) convection
also may occur with properties that are similar to those of
convection in protoneutron stars (PNSs). We thus suggest that
strange stars can also create dynamo-originated magnetic fields
during the deleptonization episode soon after a supernova
explosion.
Further detailed investigations are needed to see whether or not strange
stars and neutron stars can be distinguished according to the differences
in dynamo actions in strange quark matter and in neutron matter.
The magnetic fields of strange stars and neutron stars may also behave
very differently during the accretion-phase when the fields decay.
Key words: stars: pulsars: general -- stars: neutron -- elementary particles -- stars: supernovae: general -- magnetic fields
Offprint request: R. X. Xu, rxxu@bac.pku.edu.cn
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