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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
A new determination of the INTEGRAL/IBIS point source location accuracy
Astronomy and Astrophysics, Volume 516, No. 22, Article A75, Year 2010
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Description
Aims. We determine the point source location accuracy (PSLA) of the INTEGRAL/IBIS telescope based on analysis of archival in-flight data. Methods. Over 40 000 individual pointings (science windows) of INTEGRAL/IBIS data were analysed using the latest Off-line Science Analysis software (version 7.0). Reconstructed source positions were then compared with the most accurate positions available, determined using focusing X-ray telescopes. Since the PSLA is a strong function of source detection significance, histograms of the offsets from true position were compiled to determine the 90% confidence limits for both sources in the fully coded field of view (FCFOV) and partially coded field of view (PCFOV). Results. The PSLA is found to have improved significantly since measurements were first made for early mission data and software for both FCFOV and PCFOV. Conclusions. This result has implications for observers executing follow-up programs on IBIS sources since the sky area to be searched is reduced by more than 50% in some cases. © 2010 ESO.
Authors & Co-Authors
Scaringi, Simone
Netherlands, Nijmegen
Radboud Universiteit
United Kingdom, Southampton
University of Southampton
Bird, Antony J.
Netherlands, Nijmegen
Radboud Universiteit
Hill, Adam B.
France, Saint Martin D'heres
Institut de Planétologie et D’astrophysique de Grenoble Ipag
Clark, David J.
Netherlands, Nijmegen
Radboud Universiteit
McBride, Vanessa A.
Netherlands, Nijmegen
Radboud Universiteit
Dean, Anthony J.
Netherlands, Nijmegen
Radboud Universiteit
Bazzano, Angela
Italy, Rome
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Rome
Natalucci, Lorenzo
Italy, Rome
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Rome
Stephen, John Buchan
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
Statistics
Citations: 8
Authors: 9
Affiliations: 5
Identifiers
Doi:
10.1051/0004-6361/201014209
ISSN:
00046361
Study Design
Cohort Study