4 papers
A model for upper kHz QPO coherence of accreting neutron star
J. Wang, C. M. Zhang, Y. H. Zhao +3
{We investigate the coherence of the twin kilohertz quasi-periodic oscillations (kHz QPOs) in the low-mass X-ray binary (LMXB) theoretically. The profile of upper kHz QPO, interpre…
Spin Period Evolution of Recycled Pulsar in Accreting Binary
J. Wang, C. M. Zhang, Y. H. Zhao +3
We investigate the spin-period evolutions of recycled pulsars in binary accreting systems. Taking both the accretion induced field decay and spin-up into consideration, we calculat…
Study of measured pulsar masses and their possible conclusions
C. M. Zhang, J. Wang, Y. H. Zhao +6
We study the statistics of 61 measured masses of neutron stars (NSs) in binary pulsar systems, including 18 double NS (DNS) systems, 26 radio pulsars (10 in our Galaxy) with white…
Does Sub-millisecond Pulsar XTE J1739-285 Contain a Low Magnetic Neutron Star or Quark Star ?
C. M. Zhang, H. X. Yin, Y. H. Zhao +2
With the possible detection of the fastest spinning nuclear-powered pulsar XTE J1739-285 of frequency 1122 Hz (0.8913 ms), it arouses us to constrain the mass and radius of its cen…