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ISGRI: the INTEGRAL Soft Gamma-Ray Imager

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arxiv astro-ph/0310362 v1 pith:VR26PJ4Q submitted 2003-10-14 astro-ph

F. Lebrun , J.-P. Leray , P. Lavocat , J. Cretolle , M. Arques , C. Blondel , C. Bonnin , A. Bouere
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C. Cara T. Chaleil F. Daly F. Desages H. Dzitko B. Horeau P. Laurent O. Limousin F. Mathy V. Mauguen F. Meignier F. Molinie E. Poindron M. Rouger A. Sauvageon T. Tourette
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abstract

For the first time in the history of high energy astronomy, a large CdTe gamma-ray camera is operating in space. ISGRI is the low-energy camera of the IBIS telescope on board the INTEGRAL satellite. This paper details its design and its in-flight behavior and performances. Having a sensitive area of 2621 cm$^2$ with a spatial resolution of 4.6 mm, a low threshold around 12 keV and an energy resolution of $\sim$ 8% at 60 keV, ISGRI shows absolutely no signs of degradation after 9 months in orbit. All aspects of its in-flight behavior and scientific performance are fully nominal, and in particular the observed background level confirms the expected sensitivity of 1 milliCrab for a 10$^6$s observation.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A Search for Hard X-ray/Soft $\gamma$-ray Emission from SPT-CL J2012-5649 (Abell 3667) Using INTEGRAL/ISGRI

    astro-ph.HE 2025-12 conditional novelty 5.0 of 10

    INTEGRAL/ISGRI finds no 30–300 keV emission from the merging galaxy cluster Abell 3667, yielding a 3σ upper limit of 4.4×10^-10 erg cm^-2 s^-1 in the 30–100 keV band.

  2. Probing Heavy Axion-like Particles from Massive Stars with X-rays and Gamma Rays

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Decay photons from heavy ALPs produced in Wolf-Rayet stars can be probed by INTEGRAL SPI down to gaγ ~ 4e-11 GeV^-1 for ma ~ 10-100 keV, modestly extending existing limits.

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