Other
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..aprs10005h&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #S10.005
Other
Scientific paper
The Swift Gamma-Ray Explorer is designed to make prompt multiwavelength observations of Gamma-Ray Bursts and their Afterglows. The X-ray Telescope (XRT) provides key capabilities that permit Swift to determine GRB positions with arcsecond accuracy within 100 seconds of the burst onset. The XRT utilises a superb mirror set built for JET-X and a state-of-the-art XMM/EPIC MOS CCD detector to provide a sensitive broad-band (0.2-10 keV) X-ray imager with an effective area of 110 cm2 at 1.5 keV, a field of view of 23.6 x 23.6 arcminutes, and an angular resolution of 18 arcseconds (HEW). The detection sensitivity is 2x10-14 erg/cm2/s in 10 thousand seconds. The instrument is designed to provide automated source detection and position reporting within 5 seconds of target acquisition. Redshifts of GRBs can also be measured for bursts with Iron line emission or other spectral features. The XRT will operate in an auto-exposure mode, adjusting the CCD readout mode according to the countrate automatically, to optimise the science return as the source fades. On average, the XRT will begin to measure the spectra and lightcurve of the GRB afterglow a minute after the burst and will follow each burst until it fades from view.
Burrows David
Campana Sergio
Chincarini Guido
Hill Joanne
Mukerjee Kallol
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