This paper is under CC 4.0 license. available on arxiv Authors: (1) A. V. Kuzin, Sternberg Astronomical Institute, Moscow, Russia and E-mail: alv.kuzin@gmail.com. Table of Links Abstract and Introduction Model of Disk and Neutron Star Main Equations The Solution for the Induced Field Discussion Conclusion and References 4. THE SOLUTION FOR THE INDUCED FIELD where A, C may be found easily from boundary conditions. The problem for may be solved in the following way. First, we solve the Sturm-Liouville problem with corresponding boundary conditions: u Eigenfunctions of (27) are combinations of Bessel functions of the first and second kind: while the eigenvalues are roots of the equation: