Magnetic field evolution in accreting white dwarfs
Magnetic field evolution in accreting white dwarfs
We discuss the evolution of the magnetic field of an accreting white dwarf. We calculate the ohmic decay modes for accreting white dwarfs, the interiors of which are maintained in a liquid state by compressional heating. We show that the lowest-order ohmic decay time is (8–12)×109 yr for a dipole …