USA observations of Circinus X-1

Details USA observations of Circinus X-1 USA observations of Circinus X-1

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.2408s&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #24.08; Bulletin of the American Astronomical Society, Vol. 32, p.1218

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new X-ray observations of Circinus X-1 taken by the USA experiment on ARGOS. USA made observations of Circinus X-1 between the months of May and August 2000, including an intensive (70 ksec) study covering orbital phase 0.9 through 0.5. We analyze the timing and spectral characteristics of Circinus X-1 throughout its 16.6 day orbit, monitoring the evolution of its low frequency QPO (3-10 Hz). We look at the possible correlations of the QPO frequency and rms power with the flux and energy spectrum of the source. Basic research in X-ray Astronomy at the Naval Research Laboratory is supported by the Office of Naval Research. Work at SLAC was supported by Department of Energy contract DE-AC03-76SF00515.

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