Abstract In order to explore mechanisms for the production of radio lobes from radio galaxies, we propose observational tests involving neutrinos at E ≥ 4 TeV. Among the mechanisms that have been suggested are: an explosive burst of energy that has been stored in or near the galactic nucleus; diffusive escape of particles from the vicinity of the galactic nucleus into plasmons; a beam from the galactic core that interacts with the circumgalactic medium; and black holes or spinars ejected from the galactic nucleus by a gravitational slingshot mechanism. As an example, we estimate neutrino fluxes from Cen A. The annual neutrino event rate at energies above 4 TeV is ≈ 102–103 for a DUMAND-type dectector if relativistic particles are temporarily stored near the galactic nucleus, and if these have a differential energy spectrum with exponent –2.0. With a similar exponent, but allowing free escape from the galaxy, the fluxes are about 10 times lower.
High-energy neutrinos from powerful radio galaxies
Advances in Space Research ; 1 , 13 ; 63-66
1981-01-01
4 pages
Article (Journal)
Electronic Resource
English
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