On the Bottom Magnetic Fields of the Millisecond Pulsars

Abstract

The magnetic field strengths of most millisecond pulsars(MSP) are about $10^{8-9}$ Gauss. The accretion induced magnetic field evolution scenario here concludes that the field decay is invesely related to the accreted mass and the minimum field or bottom field stops at about $10^8$ Gauss if accreted with the Eddington accretion rate, which is proportionally related with the accretion rate as ${\dot{M}}^{1/2}$. The possibility of the low field $\sim 10^7$ Gauss MSPs has been proposed for the future radio observation.

arXiv comment2 pages. "To appear in "Young Neutron Stars and Their Environments" (IAU Symposium 218, ASP Conference Proceedings), eds F. Camilo and B. M. Gaensler"