The estimations of neutron star mass and radius by the kHz QPOs

✍ Scribed by C.M. Zhang

• Book ID: 101699890
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 159 KB
• Volume: 330
• Category: Article
• ISSN: 0004-6337
• DOI: 10.1002/asna.200811188

✦ Synopsis

Abstract

The kHz quasi‐periodic oscillations (QPOs) have been detected by the RXTE satellite in about thirty neutron stars (NSs) in low mass X‐ray binaries (LMXBs), which are usually interpreted to be related to the Keplerian motions in the orbit close to NS surface where the accreted matter is sucked onto the star. Based on the MHD Alfvén wave oscillation model and the relativistic precession model for the neutron star (NS) kHz QPOs, estimations of mass M and radius R of some NSs are given, which can give clues to evaluate the models. Furthermore, comparisons with theoretical M ‐R relations by stellar equations of state (EOSs) are presented (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)