Space Science Reviews

, Volume 120, Issue 3–4, pp 165–195

The Swift X-Ray Telescope

  • David N. Burrows
  • J. E. Hill
  • J. A. Nousek
  • J. A. Kennea
  • A. Wells
  • J. P. Osborne
  • A. F. Abbey
  • A. Beardmore
  • K. Mukerjee
  • A. D. T. Short
  • G. Chincarini
  • S. Campana
  • O. Citterio
  • A. Moretti
  • C. Pagani
  • G. Tagliaferri
  • P. Giommi
  • M. Capalbi
  • F. Tamburelli
  • L. Angelini
  • G. Cusumano
  • H. W. Bräuninger
  • W. Burkert
  • G. D. Hartner
Article

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 burst X-ray telescope Swift X-ray instrumentation X-ray CCD detector X-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

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • David N. Burrows
    • 1
  • J. E. Hill
    • 1
  • J. A. Nousek
    • 1
  • J. A. Kennea
    • 1
  • A. Wells
    • 2
  • J. P. Osborne
    • 2
  • A. F. Abbey
    • 2
  • A. Beardmore
    • 2
  • K. Mukerjee
    • 2
  • A. D. T. Short
    • 2
  • G. Chincarini
    • 3
  • S. Campana
    • 3
  • O. Citterio
    • 3
  • A. Moretti
    • 3
  • C. Pagani
    • 3
  • G. Tagliaferri
    • 3
  • P. Giommi
    • 4
  • M. Capalbi
    • 4
  • F. Tamburelli
    • 4
  • L. Angelini
    • 5
  • G. Cusumano
    • 6
  • H. W. Bräuninger
    • 7
  • W. Burkert
    • 7
  • G. D. Hartner
    • 7
  1. 1.Pennsylvania State UniversityUniversity ParkUSA
  2. 2.Space Research CentreUniversity of LeicesterLeicesterUK
  3. 3.INAF-Osservatorio Astronomico di BreraMerateItaly
  4. 4.ASI Science Data CenterFrascatiItaly
  5. 5.NASA/Goddard Space Flight CenterGreenbeltUSA
  6. 6.INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica Sezione di PalermoPalermoItaly
  7. 7.Max-Planck-Institut für Extraterrestrische PhysikGarching bei MünchenGermany

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