Am. Atoyan et Fa. Aharonian, ON THE FLUXES OF INVERSE COMPTON GAMMA-RAYS EXPECTED FROM THE CRAB-NEBULA, Astronomy & Astrophysics. Supplement series, 120(4), 1996, pp. 453-456
The inverse Compton (IC) scattering of relativistic electrons is consi
dered as the most probable mechanism for production of gamma-rays abov
e 1 GeV in the Crab Nebula. However, while for the supposed average ma
gnetic field in the Crab Nebula B-0 approximate to 3 10(-4) G the IC g
amma-ray flux at TeV energies F-IC(> 1 TeV) approximate to 10(-11) cm(
-2)s(-1) agrees with the measured one, the predicted flux of GeV gamma
-rays, F-IC(> 1 GeV) approximate to 10(-8) cm(-2)s(-1), is by factor o
f 5 below of the flux reported by EGRET. We discuss other mechanisms f
or explanation of the observed gamma-radiation at GeV energies. We pro
pose a hypothesis that the GeV gamma-ray flux observed by EGRET is due
to enhancement of the bremsstrahlung of the ''radio'' electrons parti
ally captured in the dense filaments in the Crab Nebula.