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Searches for millisecond pulsations in low-mass X-ray binariesHigh-sensitivity search techniques for millisecond periods are presented and applied to data from the Japanese satellite Ginga and HEAO 1. The search is optimized for pulsed signals whose period, drift rate, and amplitude conform with what is expected for low-class X-ray binary (LMXB) sources. Consideration is given to how the current understanding of LMXBs guides the search strategy and sets these parameter limits. An optimized one-parameter coherence recovery technique (CRT) developed for recovery of phase coherence is presented. This technique provides a large increase in sensitivity over the method of incoherent summation of Fourier power spectra. The range of spin periods expected from LMXB phenomenology is discussed, the necessary constraints on the application of CRT are described in terms of integration time and orbital parameters, and the residual power unrecovered by the quadratic approximation for realistic cases is estimated.
Document ID
19910069004
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wood, K. S.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Hertz, P.
(U.S. Navy, E.O. Hulburt Center for Space Research, Washington DC, United States)
Norris, J. P.
(NASA Goddard Space Flight Center Greenbelt, MD; U.S. Navy, E.O. Hulburt Center for Space Research, Washington, DC, United States)
Vaughan, B. A.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Michelson, P. F.
(Stanford University CA, United States)
Mitsuda, K.
(Institute for Space and Astronautical Science Sagamihara, Japan)
Lewin, W. H. G.
(MIT Cambridge, MA, United States)
Van Paradijs, J.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Penninx, W.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Van Der Klis, M.
(Amsterdam, University; Center for High-Energy Astrophysics, Netherlands)
Date Acquired
August 14, 2013
Publication Date
September 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 379
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A53627
Funding Number(s)
CONTRACT_GRANT: NAG8-571
CONTRACT_GRANT: NAG8-674
CONTRACT_GRANT: NSG-7643
Distribution Limits
Public
Copyright
Other

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