2 papers
astro-ph.HE2013
The evolution of inner disk radius with orbital phase in Circinus X-1
Yanan Wang, Guoqiang Ding, Chunping Huang
Using RXTE observations, we investigate the evolution of inner disk radius R_in of Cir X-1 during two cycles and find obvious orbital modulation. We argue that the modulation is at…
astro-ph.HE2013
Determining the neutron star surface magnetic field strength of two Z sources
Guoqiang Ding, Chunping Huang, Yanan Wang
From the extreme position of disk motion, we infer the neutron star (NS) surface magnetic field strength B_0 of Z-source GX 17+2 and Cyg X-2. The inferred B_0 of GX 17+2 and Cyg X-…