Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jkas...29...83l&link_type=abstract
Journal of the Korean Astronomical Society, vol. 29, no. 2, p. 83-91
Astronomy and Astrophysics
Astronomy
Cosmology, Primordial Magnetic Field, Large-Scale Structure
Scientific paper
We present a model that rotating primordial blackholes(PBHs) produced at the end of inflation generate the random, non-oriented primordial magnetic field. PBHs are copiously produced as the Universe completes the cosmic phase transition via bubble nucleation and tunneling processes in the extended inflation hypothesis. The PBHs produced acquire angular momentum through the mutual tidal gravitational interaction. For PBHs of mass less than 10E13 g, one can show that the evaporation (photon) luminosity of PBHs exceeds the Eddington limit. Thus throughout the lifetime of the rotating PBH, radiation flow from the central blackhole along the Kerr-geodesic exerts torque to ambient plasma. In the process similar to the Bierman's battery mechanism electron current reaching up to the horizon scale is induced. For PBHs of Grand Unified Theories extended inflation with the symmetry breaking temperature of Tgut ~ 10E10 GeV, which evaporate near decoupling, we find that they generate random, non-oriented magnetic fields of about 10E-11 G on the last-scattering surface on (the present comoving) scales of about O(10) Mpc.
La Dail
Park Changbom
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