%0 Journal Article
%T Hollow core?
%A G. J. Qiao
%A J. F. Liu
%A Y. Wang
%A X. J. Wu
%A J. L. Han
%J Physics
%D 1999
%I arXiv
%X We carried out the Gaussian fitting to the profile of PSR B1237+25 and found that six components rather than five are necessary to make a good fit. In the central part, we found that the core emission is not filled pencil beam but is a small hollow cone. This implies that the impact angle could be $\beta<0.5^\circ$. The ``hollow core'' is in agreement with Inverse Compton Scattering model of radio pulsars.
%U http://arxiv.org/abs/astro-ph/9911306v1