Kilohertz Quasi-Periodic Oscillations, Magnetic Fields and Mass of Neutron Stars in Low-Mass X-Ray Binaries

Dong Lai, Richard Lovelace, Ira Wasserman

It has recently been suggested that the maximum observed quasi-periodic oscillation (QPO) frequencies, ${\nu }_{max}$, for several low-mass X-ray binaries, particularly 4U 1820-30, corr…