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SPI/INTEGRAL in-flight performance

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SPI/INTEGRAL in-flight performance

dc.contributor.author	Roques, J. P.
dc.contributor.author	Schanne, S.
dc.contributor.author	von Kienlin, A.
dc.contributor.author	Knödlseder, J.
dc.contributor.author	Briet, R.
dc.contributor.author	Bouchet, L.
dc.contributor.author	Paul, Ph.
dc.contributor.author	Boggs, S.
dc.contributor.author	Caraveo, P.
dc.contributor.author	Cassé, M.
dc.contributor.author	Cordier, B.
dc.contributor.author	Diehl, R.
dc.contributor.author	Durouchoux, Ph.
dc.contributor.author	Jean, P.
dc.contributor.author	Leleux, P.
dc.contributor.author	Lichti, G.
dc.contributor.author	Mandrou, P.
dc.contributor.author	Matteson, J.
dc.contributor.author	Sánchez Martínez, Filomeno
dc.contributor.author	Schönfelder, F.
dc.contributor.author	Skinner, G.
dc.contributor.author	Strong, A.
dc.contributor.author	Teegarden, B.
dc.contributor.author	Vedrenne, G.
dc.contributor.author	von Ballmoos, P.
dc.contributor.author	Wunderer, C.
dc.date.accessioned	2010-06-29T10:58:22Z
dc.date.available	2010-06-29T10:58:22Z
dc.date.issued	2003
dc.identifier.citation	ROQUES, J.P. et al. 2003, SPI/INTEGRAL in-flight performance, Astronomy and Astrophysics, vol. 411, no. 1, p. L91–L100	en
dc.identifier.uri	http://hdl.handle.net/10550/14006
dc.description.abstract	The SPI instrument has been launched on-board the INTEGRAL observatory on October 17, 2002. SPI is a spectrometer devoted to the sky observation in the 20 keV–8 MeV energy range using 19 germanium detectors. The performance of the cryogenic system is nominal and allows to cool the 19 kg of germanium down to 85 K with a comfortable margin. The energy resolution of the whole camera is 2.5 keV at 1.1 MeV. This resolution degrades with time due to particle irradiation in space. We show that the annealing process allows the recovery of the initial performance. The anticoincidence shield works as expected, with a low threshold at 75 keV, reducing the GeD background by a factor of 20. The digital front-end electronics system allows the perfect alignement in time of all the signals as well as the optimisation of the dead time (12%). We demonstrate that SPI is able to map regions as complex as the galactic plane. The obtained spectrum of the Crab nebula validates the present version of our response matrix. The 3σ sensitivity of the instrument at 1 MeV is 8 × 10^−7 ph cm−^2 s^−1 keV^−1 for the continuum and 3 × 10^−5 ph cm^−2 s^−1 for narrow lines.	en
dc.language.iso	en	en
dc.subject	Gamma-ray ; Instrument ; Observations ; Space telescope ; INTEGRAL/SPI	en
dc.title	SPI/INTEGRAL in-flight performance	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA	en
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia	en
dc.identifier.doi	10.1051/0004-6361:20031501	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.aanda.org/articles/aa/pdf/2003/43/aaINTEGRAL74.pdf	en