2026-09-19T06:11:33Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/408982022-01-13T07:54:41Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Alan M. Levine.
Harris, Robert J., S.M. Massachusetts Institute of Technology
Massachusetts Institute of Technology. Dept. of Physics.
Massachusetts Institute of Technology. Department of Physics
2008-03-27T18:21:00Z
2008-03-27T18:21:00Z
2007
2007
http://hdl.handle.net/1721.1/40898
197093860
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2007.
Includes bibliographical references (p. 99-106).
In this work, we present the results of a general search for periodicities and for time-variable modulation strength in X-ray sources using data from the All-Sky Monitor onboard the Rossi X-ray Timing Explorer. New findings, including a sharp increase in the modulation of the X-ray flux from the Galactic bulge low-mass X-ray binary GX 9+9 and the recent spin-down event of the pulsar in the high-mass X-ray binary X0114+650, are reported. These searches employed new methods of periodicity detection that employed an algorithm to reduce the effects of low frequency noise from X-ray sources. We discuss these methods and show how they can be used to enhance the signal-to-noise ratio in the Fourier domain for many sources.
by Robert J. Harris.
S.B.
106 p.
eng
Massachusetts Institute of Technology
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http://dspace.mit.edu/handle/1721.1/7582
Physics.
A systematic periodicity and time-variable modulation search in RXTE ASM data : methods, findings, and implications for astrophysical X-ray sources
Thesis
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