A lower bound on the local extragalactic magnetic field

Details A lower bound on the local extragalactic magnetic field A lower bound on the local extragalactic magnetic field

2001-06-19

arxiv.org/abs/hep-ph/0106217v3

Phys.Rev. D65 (2002) 021302

Physics

High Energy Physics

High Energy Physics - Phenomenology

Includes extensive discussion of particle acceleration above 10^20 eV in the hot spot-like region of Cen A

Scientific paper

10.1103/PhysRevD.65.021302

Assuming that the hard gamma-ray emission of Cen A is a result of synchrotron
radiation of ultra-relativistic electrons, we derive a lower bound on the local
extragalactic magnetic field, $B> 10^{-8}$ G. This result is consistent with
(and close to) upper bounds on magnetic fields derived from consideration of
cosmic microwave background distortions and Faraday rotation measurements.

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