INTEGRAL/SPI spectral deconvolution

Details INTEGRAL/SPI spectral deconvolution INTEGRAL/SPI spectral deconvolution

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..717s&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 717-721 (2000).

Computer Science

X- And Gamma-Ray Telescopes And Instrumentation, Data Analysis: Algorithms And Implementation, Data Management

Scientific paper

The INTEGRAL Spectrometer or ``SPI,'' is a cooled-germanium instrument covering the 20 keV to ~10 MeV energy range with a resolution of about 500. The unique nature of the instrument. 19 separate detector elements viewing the sky through a coded mask aperture, poses a number of difficulties in analyzing the data. For example, a typical observation consists of multiple pointing directions (dithering) with an instrument response that is highly directional. Multiple sources within the nominal 16 °FoV are likely to be common, and most high-energy point sources are variable over observable time scales. Thus a typical deconvolution of the detector count-rate data involves a complex global minimization problem over large data and parameter spaces. Strategies for dealing with these difficulties, are discussed and some preliminary results based on simulated data are presented. .

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