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In flight performance and first results of FREGATE

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arxiv astro-ph/0202515 v1 pith:E7YXTJNN submitted 2002-02-28 astro-ph

In flight performance and first results of FREGATE

classification astro-ph
keywords fregategamma-raybeenfirsthete-2mainperformancealert
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The gamma-ray detector of HETE-2, called FREGATE, has been designed to detect gamma-ray bursts in the energy range [6-400] keV. Its main task is to alert the other instruments of the occurrence of a gamma-ray burst (GRB) and to provide the spectral coverage of the GRB prompt emission in hard X-rays and soft gamma-rays. FREGATE was switched on on October 16, 2000, one week after the successful launch of HETE-2, and has been continuously working since then. We describe here the main characteristics of the instrument, its in-flight performance and we briefly discuss the first GRB observations.

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