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Precessing G Amma J Ets, G RB a ND T He T Win R Ings Around S N1987A

Precessing G Amma J Ets, G RB a ND T He T Win R Ings Around S N1987A

1995
Daniele Fargion
Abstract
Gamma jets (G J) at MeV energies may be produced in galactic halos by Inverse Compton Scattering (ICS) of coUinear ultrarelativistic electron beams (at GeV energies) onto thermal photons. These electron jets are emitted by neutron star jets (NSJ) or black holes (BH) while the target thermal photons are generated by a nearby binary stellar- like companion (or by a relic accreting disk). The GJ precesses in a conical shape as a lighthouse (with a characteristic Keplerian binary period) forced by the NSJ magnetic lines interaction with the stellar companion ones. The sudden blazing of the G J, once the observer is into the beam cone direction, is detected as a GRB. Our predicted GRB spectra fit the GRB observed ones; GRB luminosity, variabihty and counts are well explained if the GJ sources are located in an "extended" and an "evaporating" galactic halo as the one recently required in the fast running away NS model. Observed jets such as SS433, the Great Annihilator...

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