Translator Disclaimer
Paper
18 August 2005 The unique observing capabilities of the Swift x-ray telescope
Author Affiliations +
Abstract
The XRT is a sensitive, autonomous X-ray imaging spectrometer onboard the Swift Gamma-Ray Burst Observatory. The unique observing capabilities of the XRT allow it to autonomously refine the Swift BAT positions (~1-4' uncertainty) to better than 2.5 arcsec in XRT detector coordinates, within 5 seconds of target acquisition by the Swift Observatory for typical bursts, and to measure the flux, spectrum, and light curve of GRBs and afterglows over a wide dynamic range covering more than seven orders of magnitude in flux (62 Crab to < 1 mCrab). The results of the rapid positioning capability of the XRT are presented here for both known sources and newly discovered GRBs, demonstrating the ability to automatically utilise one of two integration times according to the burst brightness, and to correct the position for alignment offsets caused by the fast pointing performance and variable thermal environment of the satellite as measured by the Telescope Alignment Monitor. The onboard results are compared to the positions obtained by groundbased follow-up. After obtaining the position, the XRT switches between four CCD readout modes, automatically optimising the scientific return from the source depending on the flux of the GRB. Typical data products are presented here.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. E. Hill, L. Angelini, D. C. Morris, D. N. Burrows, A. F. Abbey, S. Campana, M. Capalbi, G. Cusumano, J. A. Kennea, R. Klar, C. Mangels, A. Moretti, J. P. Osborne, M. Perri, J. Racusin, G. Tagliaferri, F. Tamburelli, P. Wood, J. A. Nousek, and A. Wells "The unique observing capabilities of the Swift x-ray telescope", Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 589815 (18 August 2005); https://doi.org/10.1117/12.618026
PROCEEDINGS
16 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

SVOM: a French/Chinese cooperation for a GRB mission
Proceedings of SPIE (July 06 2018)
Swift X-Ray Telescope
Proceedings of SPIE (December 13 2000)
Absolute timing with the SWIFT X-ray telescope (XRT)
Proceedings of SPIE (August 18 2005)
The operation and evolution of the swift x-ray telescope
Proceedings of SPIE (September 13 2007)
Swift x-ray telescope (XRT)
Proceedings of SPIE (March 11 2003)
The SWIFT Gamma-Ray Burst Observatory
Proceedings of SPIE (October 11 2004)

Back to Top