  Inverse Compton Scattering (ICS) by a relativistic electron beam jet at GeV
energies (emitted by a compact object as a NS, BH,...), a NSJ, onto thermal BBR
photons (from a nearby stellar companion) may originate a collinear gamma jet
(GJ). Due to the binary system interaction the GJ precession would blaze
suddenly toward the observer leading to a GRB event. The internal GJ cone
structure is ruled by relativistic kinematics into a concentric onion-like
sequence of photon rings, the softer in the external boundaries, the harder in
the inner cone. The pointing and the crossing of such different GJ photon rings
to the detector lead to a GRB hardness spectra evolution nearly corresponding
to most observed ones. Moreover expected time integral spectra are also
comparable with known GRB spectra. The total energy input of tens of thousands
of such NSJ in an extended galactic halo, mainly cosmic rays electrons, should
be reflected into the recent observational evidence (COMPTEL) of a diffused
relic extended halo. Evidences of such precessing jets are offered by the
discover of galactic superluminal sources, recent HH jets, SN1987A outer rings,
Hourglass Nebula, planetary Egg Nebula, GROJ1744-28 binary X-rays pulsar.
