First identification and modelling of SPI background lines

Details First identification and modelling of SPI background lines First identification and modelling of SPI background lines

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...411l.113w&link_type=abstract

Astronomy and Astrophysics, v.411, p.L113-L116 (2003)

Astronomy and Astrophysics

Astrophysics

42

Line: Identification, Instrumentation: Miscellaneous, Methods: Data Analysis, Methods: Numerical

Scientific paper

On Oct. 17, 2002, the ESA INTEGRAL observatory was launched into a highly elliptical orbit. SPI, a high resolution Ge spectrometer covering an energy range of 20-8000 keV, is one of its two main instruments. We use data recorded early in the mission (i.e. in March 2003) to characterize the instrumental background, in particular the many gamma-ray lines produced by cosmic-ray interactions in the instrument and spacecraft materials. More than 300 lines and spectral features are observed, for about 220 of which we provide identifications. An electronic version of this list, which will be updated continuously, is available for download at CESR. We also report first results from our efforts to model these lines by {ab initio} Monte Carlo simulation.
Based on observations with INTEGRAL, an ESA project with instruments and science data centre funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, Spain), Czech Republic and Poland, and with the participation of Russia and the USA.
Table 1 is only available in electronic form at http://www.edpsciences.org

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