some time the theoretical expectation has been that rotation powered neutron stars (pulsars) should generate collimated outflows (e.g., [@Benford84]; [@Michel85]; [@Sulkanen90]). The Crab, Vela, PSR B1509-58 and possible PSR B1951+32 all show evidence that this is indeed the case ([@Hester98]; [@Gaensler99] and references therein). If the energy flux from the source of GRB 990123 in the direction to the Earth is only about ten times more than the energy flux averaged over all directions, the model of GRBs based on the rotation powered winds can easily explain the energetics of such an extremal event as GRB 990123 ([@Kulkarni99]). Such an anisotropy of emission from the burst sources doesn’t contradict available data on GRBs (e.g., [@PL98]). In the case of typical GRBs with the energy output of $10^{51}-10^{53}$ ergs, this model can explain their energetics even if the emission of GRBs is nearly isotropic. Therefore, the rotational energy of compact objects is a plausible source of energy for cosmological GRBs, not the thermal energy.

In many papers (e.g., [@Usov92]; [@Thompson93]; Blackman et al. 1996; [@Kluzniak98]), it was argued that the strength of the magnetic field $B_{_S}$ at the surface of compact objects may be as high as $\sim 10^{16}$ G or 