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The X-Ray Telescope
Swift's X-Ray
Telescope
(XRT; Burrows, et al. 2005, SSRv, 120, 165) is designed to measure the fluxes, spectra, and light curves of
GRBs and their afterglows over a wide dynamic range covering more than
seven orders of magnitude in flux. The
XRT
will pinpoint GRBs to 5-arcsecond accuracy within ten seconds of it
target acquisition for a typical GRB, and will study the X-ray
counterparts of GRBs beginning 60-80 seconds after the burst
discovery and continuing for days to weeks. Table 6 summarizes the
XRT
parameters. More detail about the
XRT
can be found in Burrows et al. (2005, Sp. Sci. Rev., 120, 165).
Table 6:
Characteristics of the
XRT.
XRT Parameter |
Value |
Energy Range |
0.2-10 keV |
Telescope |
Wolter 1 |
Detector |
E2V CCD-22 |
Effective Area |
120 cm at 1.5 keV |
Detector Operation |
Photon-counting, integrated imaging, and timing |
Field of View |
arcminutes |
Detector Elements |
pixels |
Pixel Scale |
2.36 arcseconds |
Telescope PSF |
18 arcseconds HPD at 1.5 keV |
|
22 arcseconds HPD at 8.1 keV |
Sensitivity |
erg cm s in 10000 s |
|
Subsections
Next: XRT Technical Description
Up: The Swift Technical Handbook
Previous: BAT Instrument Performance
Contents
Eleonora Troja
2014-08-15