UCSD high energy X-ray timing experiment

Details UCSD high energy X-ray timing experiment UCSD high energy X-ray timing experiment

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1159..139r&link_type=abstract

IN: EUV, X-ray, and gamma-ray instrumentation for astronomy and atomic physics; Proceedings of the Meeting, San Diego, CA, Aug.

Astronomy and Astrophysics

Astronomy

Embedded Computer Systems, Scintillation Counters, Sky Surveys (Astronomy), Spacecraft Instruments, X Ray Sources, Automatic Gain Control, Black Holes (Astronomy), Spectral Sensitivity, Telemetry, Temporal Distribution

Scientific paper

The High Energy X-Ray Timing Experiment (HEXTE) is one of three X-ray instrument components on NASA's X-Ray Timing Explorer (XTE) mission to be launched in 1994 for the detailed 2-200 keV study of bright X-ray pulsars and other X-ray sources through observations of their temporal variability. The XTE will directly address issues pertaining to the nature of compact matter (white dwarfs to massive black holes), the evolution of systems containing these objects, and the conditions of astrophysical plasmas in their vicinity under extreme conditions of gravity, magnetic fields, and temperatures. The HEXTE is composed of two clusters, each containing four Nal/CsI phoswich scintillation counters with a total net collecting area of 800 sq cm per cluster. The detector system is designed to achieve state-of-the-art scintillator energy resolution (Delta E/E not above 0.1 at 100 keV) and high spectral sensitivity (3 sigma detection of 1 milliCrab active galaxy in one energy resolution element, Delta E = 20 keV, at 100 keV in 100,000 sec).

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