In-flight Performance of the High Energy X-ray Timing Experiment on the Rossi X-ray Timing Explorer

Details In-flight Performance of the High Energy X-ray Timing Experiment on the Rossi X-ray Timing Explorer In-flight Performance of the High Energy X-ray Timing Experiment on the Rossi X-ray Timing Explorer

1997-10-28

arxiv.org/abs/astro-ph/9710328v1

Astronomy and Astrophysics

Astrophysics

30 pages, 14 figures, 4 tables, accepted by Ap. J., to be published in vol 496, March 20, 1998

Scientific paper

10.1086/305377

The High Energy X-ray Timing Experiment (HEXTE) is one of three scientific instruments aboard the Rossi X-ray Timing Explorer (RXTE), which was launched on December 30, 1995. RXTE performs timing and spectral studies of bright x-ray sources to determine the physical parameters of these systems. The HEXTE consists of two independent clusters of detectors, each cluster containing four NaI(Tl)/CsI(Na) phoswich scintillation counters sharing a common 1 degree FWHM field of view. The field of view of each cluster is switched on- and off-source to provide near real-time background measurements. The net open area of the eight detectors is 1600 cm2, and each detector covers the energy range 15-250 keV with an average energy resolution of 15.4% at 60 keV. The in-flight performance of the HEXTE is described, the light curve and spectrum of the Crab Nebula/Pulsar is given, and the 15-240 keV spectrum of the weak source, active galaxy MCG 8-11-11 is presented to demonstrate the weak source spectral capabilities of HEXTE.

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