1304.0543 (Yuanyue Pan et al.)

Seven Pulsars in Binary Systems above the Spin-up Line    [PDF]

Yuanyue Pan, Na Wang

Using data from the ATNF pulsar catalogue, 186 binary pulsars are shown in the magnetic field versus spin period (B-P) diagram, and their relationship to the spin-up line is investigated. Generally speaking, pulsars in binary systems should be below the spin-up line when they get enough accretion mass from their companions. It is found that there are seven binary pulsars above the spin-up line. Based on the parameters of these seven binary systems, we describe possible reasons why they are above the spin-up line.

View original: http://arxiv.org/abs/1304.0543