THE RESEARCH FOR THE NONCOROTATING MODEL OF A PULSAR
Wang Xiaoming(Dept. of Foreign Affairs, Graduate College of Chinese Science and Technology University)Liang Shaorong(Dept, of Physics, Beijing Normal University)
The main point of this paper is to discuss an axisymetrical pure rotating, force-free and stable self-consistent pulsar model. There are some problems in the Golderich and Julian model (1969) due to its simple hypotheses. In order to improve it we suggest that the pulsar does not need to be corotating. We also considered the inertia effects in building a noncoro-tating pulsar model with some parameters, which can be determined according to the system's stable condition. We have obtained some interesting results: If there is no magnetic radiation, under the stable condition, the model is a corotating one. Its space charges are distributed within a definite distance from the rotating axis. The Pilipp theory is no longer correct here and it has no wind zone problem. In the case of a small angle between the rotating axis and the magnetic moment, magnetic radiation is allowed. In fact, pulsar is a nonequilibrium system with a minimum entropy production as its stable condition. From this we can obtain an exact non-corotating model with radiations which have two parts: magnetic radiation and bremsstrahlung radiation. The bremsstrahlung radiation is due to collision between electrons and protons in the pulsar crust. In the case of an arbitrary angle between the rotating axis and the magnetic moment, this result is also correct, except for different rotating velocity function.