In-Orbit Performance of the Hard X-ray Detector on board Suzaku

Details In-Orbit Performance of the Hard X-ray Detector on board Suzaku In-Orbit Performance of the Hard X-ray Detector on board Suzaku

2006-11-07

arxiv.org/abs/astro-ph/0611233v1

Publ.Astron.Soc.Jap.59:53-76,2007

Astronomy and Astrophysics

Astrophysics

45 pages, 40 figures and 9 tables; accepted for Pulications of the Astronomical Society of Japan

Scientific paper

The in-orbit performance and calibration of the Hard X-ray Detector (HXD) on board the X-ray astronomy satellite Suzaku are described. Its basic performances, including a wide energy bandpass of 10-600 keV, energy resolutions of ~4 keV (FWHM) at 40 keV and ~11% at 511 keV, and a high background rejection efficiency, have been confirmed by extensive in-orbit calibrations. The long-term gains of PIN-Si diodes have been stable within 1% for half a year, and those of scintillators have decreased by 5-20%. The residual non-X-ray background of the HXD is the lowest among past non-imaging hard X-ray instruments in energy ranges of 15-70 and 150-500 keV. We provide accurate calibrations of energy responses, angular responses, timing accuracy of the HXD, and relative normalizations to the X-ray CCD cameras using multiple observations of the Crab Nebula.

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