Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..662...25k&link_type=abstract
GAMMA-RAY BURST AND AFTERGLOW ASTRONOMY 2001: A Workshop Celebrating the First Year of the HETE Mission. AIP Conference Proceed
Astronomy and Astrophysics
Astronomy
10
X- And Gamma-Ray Telescopes And Instrumentation, Gamma-Ray Sources, Gamma-Ray Bursts, Spaceborne And Space Research Instruments, Apparatus, And Components, Photometric, Polarimetric, And Spectroscopic Instrumentation
Scientific paper
The Wide-field X-ray Monitor (WXM) is one of the three main scientific instruments on HETE-2, and is designed to measure the light curves, spectra, and locations of gamma-ray bursts (GRBs) and other transients in the energy range of 2-25 keV. It consists of Xe-filled 1-D position-sensitive proportional counters equipped with two 1-D coded apertures in orthogonal directions with a field of view of 40° × 40°. The sophisticated onboard processing allows the localization of GRBs in real time with ~ 10' accuracy based on the alerts from FREGATE, the gamma-ray detector. The WXM also triggers on its own count time history with a flexible algorithm and can localize X-ray events on various time scales. We present the design and basic characteristics of the detectors, the handling of the data, the in-flight performance, and some of the early observations.
Donaghy Timothy
Fenimore Edward E.
Galassi Mark
Graziani Carlo
Hatsukade Izamu
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