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Title:
Lower bound on the local extragalactic magnetic field
Authors:
Anchordoqui, Luis A.; Goldberg, Haim
Affiliation:
AA(Department of Physics, Northeastern University, Boston, Massachusetts 02115), AB(Department of Physics, Northeastern University, Boston, Massachusetts 02115)
Publication:
Physical Review D, vol. 65, Issue 2, id. 021302 (PhRvD Homepage)
Publication Date:
01/2002
Origin:
APS
PACS Keywords:
Electric and magnetic fields, Cosmic rays
DOI:
10.1103/PhysRevD.65.021302
Bibliographic Code:
2002PhRvD..65b1302A

Abstract

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>10-8 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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