Observational and evolutionary studies of neutron star X-ray binaries
Author(s)
Lin, Jinrong, Ph. D. Massachusetts Institute of Technology![Thumbnail](/bitstream/handle/1721.1/77487/827279430-MIT.pdf.jpg?sequence=5&isAllowed=y)
DownloadFull printable version (17.69Mb)
Other Contributors
Massachusetts Institute of Technology. Dept. of Physics.
Advisor
Deepto Chakrabarty and Saul Rappaport.
Terms of use
Metadata
Show full item recordAbstract
In this thesis, we present our observational and evolutionary studies of neutron stars in X-ray binary systems. A variety of topics are discussed, which are all related by a single scientific theme, namely, helping to set constraints on the mass-radius relation of neutron stars, and hence on their equations of state (EOS). In Chapter 1 we review the current neutron star masses M and radii R measurement techniques utilizing the X-ray observation of neutron stars in binaries. These techniques fall into two categories: timing and spectral analysis. In Chapter 2 we present our spectral and timing analysis of 4U 2129+47. We show that 4U 2129+47 might be in a hierarchical triple system. The source has been dropping into deeper quiescence during the last decade. The absence of the power-law hard tail in its X-ray spectrum make it a good candidate for measuring neutron star radius. In Chapter 3 we present our analysis of EXO 0748-676. We show that the previously reported narrow absorption lines are inconsistent with the detected high amplitude of the 552 Hz burst oscillations. In Chapter 4 we present our semi-numerical method of evaluating the significance of burst oscillations. With this method, we searched 1187 archived RXTE Type-I X-ray bursts for high frequency oscillation modes. In Chapter 5, we present our evolutionary study of the most massive neutron star that has been recently found: PSR J1614-2230. The study has been carried out with the recently developed star evolution code "MESA". We We have computed an extensive grid of binary evolution tracks to represent low- and intermediate-mass X-ray binaries (LMXBs and IMXBs). The general results will be presented in Chapter 6.
Description
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2011. Cataloged from PDF version of thesis. Includes bibliographical references (p. 117-125).
Date issued
2011Department
Massachusetts Institute of Technology. Department of PhysicsPublisher
Massachusetts Institute of Technology
Keywords
Physics.