SPI/INTEGRAL in-flight performance

SPI/INTEGRAL in-flight performance

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SPI/INTEGRAL in-flight performance

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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::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

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