The kHz QPOs of Neutron Stars and Millisecond Pulsars and Implications

Abstract

The kilohertz quasi-periodic oscillations (kHz QPOs) have been found in neutron star low mass X-ray binaries (NS-LMXBs), which present the millisecond timing phenomena close to the surface of the compact objects. We briefly summarize the following contents: (1). The correlations and distributions of twin kHz QPOs; (2). The relations of high-low frequency QPOs; (3). The QPO properties of NS Atoll and Z sources; (4). No clear direct correlations between NS spins and QPOs; (5). The mechanisms of kHz QPOs; (6). The implications of kHZ QPOs, e.g., NS mass and radius, disk thickness and magnetic field of Atoll and Z source.

Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales" C. M. Zhang, T. Belloni, M. Mendez & S. N. Zhang (eds.), 4 pages, 0 figures. Published

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