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The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy

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The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy

dc.contributor.author	Gros, A.
dc.contributor.author	Goldwurm, A.
dc.contributor.author	Cadolle-Bel, M.
dc.contributor.author	Goldoni, P.
dc.contributor.author	Rodriguez, J.
dc.contributor.author	Foschini, L.
dc.contributor.author	Del Santo, M.
dc.contributor.author	Blay Serrano, Pedro Jose
dc.date.accessioned	2010-08-10T10:48:36Z
dc.date.available	2010-08-10T10:48:36Z
dc.date.issued	2003
dc.identifier.citation	GROS, A. ; Goldwurm, A. ; Cadolle-Bel, M. ; Goldoni, P. ; Rodriguez, J. ; Foschini, L. ; Del Santo, M. ; Blay Serrano, Pedro Jose, 2003, The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy, Astronomy and Astrophysics, vol. 411, no. 1, p. L179-L183	en
dc.identifier.uri	http://hdl.handle.net/10550/16803
dc.description.abstract	The imager on board INTEGRAL (IBIS) presently provides the most detailed sky images ever obtained at energies above 30 keV. The telescope is based on a coded aperture imaging system which allows to obtain sky images in a large field of view (29ºx29º ) with an angular resolution of 12' . The System Point Spread Function of the telescope and its detailed characteristics are here described along with the specific analysis algorithms used to derive the accurate point-like source locations. The derived location accuracy is studied using the first in-flight calibration data on strong sources for the IBIS/ISGRI system. The dependence of the calibrated location accuracy with the signal to noise ratio of the sources is presented. These preliminary studies demonstrate that the IBIS/ISGRI telescope and the standard scientific analysis software allow source localizations with accuracy at 90% confidence level better than 10 for sources with signal to noise ratios >30 over the whole field of view, in agreement with the expected performances of the instrument.	en
dc.language.iso	en	en
dc.subject	Data analysis ; Image processing ; High angular resolution	en
dc.title	The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA	en
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Astronomía óptica	en
dc.identifier.doi	10.1051/0004-6361:20031584	en
dc.identifier.idgrec	006165	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.aanda.org/articles/aa/pdf/2003/43/aaINTEGRAL65.pdf	en