In-orbit performance of the hard X-ray detector on board Suzaku

the HXD team

Fukazawa Yasushi

Mizuno Tsunefumi

Takahashi Hiromitsu

Kawano Naomi

Ohno Masanori

Takahashi Takuya

Hirasawa Ayumi

Yamasaki Tomonori

Publications of the Astronomical Society of Japan

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 ∼ 4keV (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.

instrumentation: detectors

X-rays: general

X-rays: individual (Crab Nebula)

Astronomy. Space sciences [ 440 ]

eng

日本天文学会

Copyright (c) 2007 Astronomical Society of Japan

[ISSN] 0004-6264

[NCID] AA1082896X

[URI] http://pasj.asj.or.jp/v59/sp1/59s105/59s105a.html