Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..499..110i&link_type=abstract
Small missions for energetic astrophysics. AIP Conference Proceedings, Volume 499, pp. 110-122 (1999).
Astronomy and Astrophysics
Astrophysics
X- And Gamma-Ray Telescopes And Instrumentation, X-Ray Sources, X-Ray Bursts
Scientific paper
SIXE (Spanish Italian X-ray Experiment) is an X-ray detector with geometric area of 2300 cm2, formed by four identical gas-filled Multicell Proportional Counters, and devoted to study the long term spectroscopy of selected X-ray sources in the energy range 3-50 keV. The main characteristics of SIXE are: time accuracy of 1 microsecond, spectral resolution of 5% for E>35 keV and 46/E% for E<35 keV, continuum sensitivity (3σ in 105 s) of 2×10-6 ph/cm2.s-1.keV-1, and line sensitivity (3σ in 105 s) of 8×10-6 ph/cm2.s-1. The size of the instruments and the requirements of the payload (weight 103 kg, full dimensions 660×660×450 mm3, power budget <60 W, on-board memory 2 Gbits, telemetry rate <100 kbps) make this experiment fully compatible with a minisatellite mission. The experiment, whose feasibility study has just been finished, has been proposed for flying on the Spanish MINISAT-02 satellite, in a 3 years long mission starting about 2002-2004. The main scientific goal is the study of the short and long term variability of a selected set of X-ray sources, such as quasars, Seyfert galaxies, high and low mass X-ray binaries, etc. The philosophy of the mission will provide the unique opportunity for the study of X-ray sources with a temporal accuracy of 1 microsecond all through the time range 10-5:107 s.
Angulo Manuel
Bausells Joan
Bravo Eduardo
Cabestany Joan
Fernández-Valbuena Manuel
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