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Proceedings Paper

Absolute timing with the SWIFT X-ray telescope (XRT)
Author(s): G. Cusumano; V. Mangano; T. Mineo; V. La Parola; A. La Barbera; S. Campana; G. Chincarini; G. Tagliaferri; A. Moretti; P. Romano; M. Capalbi; M. Perri; P. Giommi; D. Burrows; D. Morris; J. E. Hill; J. Kennea; J. A. Nousek; C. Pagani; L. Angelini; J. P. Osborne; A. F. Abbey; A. Beardmore; M. R. Goad; K. Page; A. Wells
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Paper Abstract

The X-ray telescope (XRT) on board Swift, launched on 2004 Nov 20, is performing astrometric, spectroscopic and photometric observations of the X-ray emission from Gamma-ray burst afterglows in the energy band 0.2-10 keV. In this paper, we describe the results of the in-flight calibration relative to the XRT timing resolution and absolute timing capabilities. The timing calibration has been performed comparing the main pulse phases of the Crab profile obtained from several XRT observations in Low Rate Photodiode and Windowed Timing mode with those from contemporaneous RXTE observations. The XRT absolute timing is well reproduced with an accuracy of 200 μs for the Low Rate Photodiode and 300 μs for the Windowed Timing mode.

Paper Details

Date Published: 18 August 2005
PDF: 6 pages
Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 58981A (18 August 2005); doi: 10.1117/12.616603
Show Author Affiliations
G. Cusumano, INAF-IASF Sezione di Palermo (Italy)
V. Mangano, INAF-IASF Sezione di Palermo (Italy)
T. Mineo, INAF-IASF Sezione di Palermo (Italy)
V. La Parola, INAF-IASF Sezione di Palermo (Italy)
A. La Barbera, INAF-IASF Sezione di Palermo (Italy)
S. Campana, INAF-Osservatorio Astronomico di Brera (Italy)
G. Chincarini, Univ. degli Studi di Milano Bicocca (Italy)
G. Tagliaferri, INAF-Osservatorio Astronomico di Brera (Italy)
A. Moretti, INAF-Osservatorio Astronomico di Brera (Italy)
P. Romano, INAF-Osservatorio Astronomico di Brera (Italy)
M. Capalbi, ASI Science Data Ctr. (Italy)
M. Perri, ASI Science Data Ctr. (Italy)
P. Giommi, ASI Science Data Ctr. (Italy)
D. Burrows, Penn State Univ. (United States)
D. Morris, Penn State Univ. (United States)
J. E. Hill, Penn State Univ. (United States)
J. Kennea, Penn State Univ. (United States)
J. A. Nousek, Penn State Univ. (United States)
C. Pagani, INAF-Osservatorio Astronomico di Brera (Italy)
Penn State Univ. (United States)
L. Angelini, NASA Goddard Space Flight Ctr. (United States)
J. P. Osborne, Univ. of Leicester (United Kingdom)
A. F. Abbey, Univ. of Leicester (United Kingdom)
A. Beardmore, Univ. of Leicester (United Kingdom)
M. R. Goad, Univ. of Leicester (United Kingdom)
K. Page, Univ. of Leicester (United Kingdom)
A. Wells, Univ. of Leicester (United Kingdom)


Published in SPIE Proceedings Vol. 5898:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV
Oswald H. W. Siegmund, Editor(s)

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