Space Science Reviews

, Volume 120, Issue 3, pp 165–195

The Swift X-Ray Telescope

Authors

    • Pennsylvania State University
  • J. E. Hill
    • Pennsylvania State University
  • J. A. Nousek
    • Pennsylvania State University
  • J. A. Kennea
    • Pennsylvania State University
  • A. Wells
    • Space Research CentreUniversity of Leicester
  • J. P. Osborne
    • Space Research CentreUniversity of Leicester
  • A. F. Abbey
    • Space Research CentreUniversity of Leicester
  • A. Beardmore
    • Space Research CentreUniversity of Leicester
  • K. Mukerjee
    • Space Research CentreUniversity of Leicester
  • A. D. T. Short
    • Space Research CentreUniversity of Leicester
  • G. Chincarini
    • INAF-Osservatorio Astronomico di Brera
  • S. Campana
    • INAF-Osservatorio Astronomico di Brera
  • O. Citterio
    • INAF-Osservatorio Astronomico di Brera
  • A. Moretti
    • INAF-Osservatorio Astronomico di Brera
  • C. Pagani
    • INAF-Osservatorio Astronomico di Brera
  • G. Tagliaferri
    • INAF-Osservatorio Astronomico di Brera
  • P. Giommi
    • ASI Science Data Center
  • M. Capalbi
    • ASI Science Data Center
  • F. Tamburelli
    • ASI Science Data Center
  • L. Angelini
    • NASA/Goddard Space Flight Center
  • G. Cusumano
    • INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica Sezione di Palermo
  • H. W. Bräuninger
    • Max-Planck-Institut für Extraterrestrische Physik
  • W. Burkert
    • Max-Planck-Institut für Extraterrestrische Physik
  • G. D. Hartner
    • Max-Planck-Institut für Extraterrestrische Physik
Article

DOI: 10.1007/s11214-005-5097-2

Cite this article as:
Burrows, D.N., Hill, J.E., Nousek, J.A. et al. Space Sci Rev (2005) 120: 165. doi:10.1007/s11214-005-5097-2

Abstract

he Swift Gamma-Ray Explorer is designed to make prompt multiwavelength observations of gamma-ray bursts (GRBs) and GRB afterglows. The X-ray telescope (XRT) enables Swift to determine GRB positions with a few arcseconds accuracy within 100 s of the burst onset.

The XRT utilizes a mirror set built for JET-X and an XMM-Newton/EPIC MOS CCD detector to provide a sensitive broad-band (0.2–10 keV) X-ray imager with effective area of > 120 cm2 at 1.5 keV, field of view of 23.6 × 23.6 arcminutes, and angular resolution of 18 arcseconds (HPD). The detection sensitivity is 2×10−14 erg cm−2 s−1 in 104 s. The instrument is designed to provide automated source detection and position reporting within 5 s of target acquisition. It can also measure the redshifts of GRBs with Fe line emission or other spectral features. The XRT operates in an auto-exposure mode, adjusting the CCD readout mode automatically to optimize the science return for each frame as the source intensity fades. The XRT will measure spectra and lightcurves of the GRB afterglow beginning about a minute after the burst and will follow each burst for days or weeks.

Keywords

{gamma-ray burstX-ray telescopeSwiftX-ray instrumentationX-ray CCD detectorX-ray mirrors

Abbreviations

BAT

burst alert telescope

CCD

charge-coupled device

GRB

gamma-ray burst

HPD

half-power diameter

PSF

point spread function

TAM

telescope alignment monitor

TEC

thermo-electric cooler

TDRSS

tracking and data relay satellite system

UVOT

ultra-violet/optical telescope

XRT

X-ray telescope

Copyright information

© Springer Science + Business Media, Inc. 2005