The γ-ray burst-detection system of SPI

Details The γ-ray burst-detection system of SPI The γ-ray burst-detection system of SPI

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..722l&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 722-726 (2000).

Astronomy and Astrophysics

Astronomy

8

X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

The determination of precise locations of γ-ray bursts is a crucial task of γ-ray astronomy. Although γ-ray burst locations can be obtained nowadays from single experiments (BATSE, COMPTEL, BeppoSax) the location of bursts via triangulation using the interplanetary network is still important because not all bursts will be located precisely enough by these single instruments. In order to get location accuracies down to arcseconds via triangulation one needs long baselines. At the beginning of the next decade several spacecrafts which explore the outer planetary system (the Mars-Surveyor-2001 Orbiter and probably Ulysses) will carry γ-ray burst instruments. INTEGRAL as a near-earth spacecraft is the ideal counterpart for these satellites. The massive anticoincidence shield of the INTEGRAL-spectrometer SPI allows the measurement of γ-ray bursts with a high sensitivity. Estimations have shown that with SPI some hundred γ-ray bursts per year on the 5σ level can be measured. This is equivalent to the BATSE sensitivity. We describe the γ-ray burst-detection system of SPI, present its technical features and assess the scientific capabilities. .

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