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ASM-Triggered Too Observations of Kilohertz Oscillations in Three Atoll SourcesThree Rossi Timing Explorer (RXTE) observations were carried out for this proposal based on target of opportunity triggers derived from the All-Sky Monitor (ASM) on RXTE. We obtained short observations of 4U1636-536 (15ks) and 4U1735-44 (23ks) and a longer observation of 4U0614+091 (117ks). Our analysis of our observations of the atoll neutron star x-ray binary 4U1735-44 lead to the discovery of a second high frequency quasiperiodic oscillation (QPO) in this source. These results were published in the Astrophysical Journal Letters. The data obtained on the source 4U0614+091 were used in a comprehensive study of this source, which will be published in the Astrophysical Journal. The data from this proposal were particularly critical for that study as they lead to the detection of the highest QPO frequency every found in the x-ray emission from an x-ray binary which will be important in placing limits on the equation of state of nuclear matter.
Document ID
Document Type
Contractor or Grantee Report
Kaaret, P. (Smithsonian Astrophysical Observatory Cambridge, MA United States)
Swank, Jean
Date Acquired
August 19, 2013
Publication Date
August 1, 2000
Subject Category
Social and Information Sciences (General)
Funding Number(s)
Distribution Limits
Work of the US Gov. Public Use Permitted.
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