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Phys. Rev. D 65, 021302(R) (2001) [5 pages]

Lower bound on the local extragalactic magnetic field

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Luis A. Anchordoqui and Haim Goldberg
Department of Physics, Northeastern University, Boston, Massachusetts 02115

Received 27 July 2001; published 26 December 2001

Assuming that the hard γ-ray emission of Cen A is a result of synchrotron radiation of ultrarelativistic electrons, we derive a lower bound on the local extragalactic magnetic field, B>10-8G. 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.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.021302
DOI:
10.1103/PhysRevD.65.021302
PACS:
98.62.En, 98.70.Sa