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Using a simple off-axis jet model of GRBs, we can reproduce the observedunusual properties of the prompt emission of GRB980425, such as the extremelylow isotropic equivalent gamma-ray energy, the low peak energy, the highfluence ratio, and the long spectral lag when the jet with the standard energyof ~10^{51} ergs and the opening half-angle of \Delta\theta=~10-30 degree isseen from the off-axis viewing angle ~\Delta\theta+10/\gamma, where \gamma is aLorentz factor of the jet. For our adopted fiducial parameters, if the jet thatcaused GRB 980425 is viewed from the on-axis direction, the intrinsic peakenergy Ep(1+z) is ~2.0-4.0 MeV, which corresponds to those of GRB990123 andGRB021004. Our model might be able to explain the other unusual properties ofthis event. We also discuss the connection of GRB980425 in our model with theX-ray flash, and the origin of a class of GRBs with small E_\gamma such asGRB030329, GRB980329, GRB981226, and so on.Comment: 4 pages, 2 figures aipTEX, contribution to the 2003 GRB Conference,  held at Santa Fe, N

GRB 980425 in the Off-Axis Jet Model of the Standard GRBs