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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Takahashi, Hiromitsu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2012The Hard X-ray Imager (HXI) for the ASTRO-H missioncitations
- 2011Improvements in Calibration of GSO Scintillators in the Suzaku Hard X-Ray Detectorcitations
- 2010Hard x-ray imager (HXI) for the ASTRO-H Missioncitations
- 2008In-Orbit Timing Calibration of the Hard X-Ray Detector on Board Suzakucitations
- 2008Suzaku Detection of Extended/Diffuse Hard X-Ray Emission from the Galactic Centercitations
- 2008Low/Hard State Spectra of GRO J1655-40 Observed with Suzaku
- 2008Low/Hard State Spectra of GRO J1655-40 Observed with Suzakucitations
- 2008Suzaku Broad-band Results On Cygnus X-1 In The Low/hard State
- 2007Improvement of ceramic YAG(Ce) scintillators to (YGd) <SUB>3</SUB>Al <SUB>5</SUB>O <SUB>12</SUB>(Ce) for gamma-ray detectorscitations
- 2007Suzaku observation of the black hole transient 4U1630-472: discovery of absorption linescitations
Places of action
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article
Improvements in Calibration of GSO Scintillators in the Suzaku Hard X-Ray Detector
Abstract
Improvements of the in-orbit calibration of GSO scintillators in the Hard X-ray Detector aboard Suzaku are reported. To resolve an apparent change in the energy scale of GSO, which appeared across the launch for unknown reasons, consistent and thorough re-analyses of both pre-launch and in-orbit data have been performed. With laboratory experiments using spare hardware, the pulse-height offset, corresponding to zero energy input, was found to change by ̃ 0.5% of the full analog voltage scale, depending on the power supply. Furthermore, by carefully calculating all of the light outputs of secondaries from activation lines used in the in-orbit gain determination, their energy deposits in GSO were found to be effectively lower, by several percent, than their nominal energies. Taking both of these effects into account, the in-orbit data agree with the on-ground measurements within ̃ 5%, without employing the artificial correction introduced in previous work (Kokubun et al. 2007, PASJ, 59, S53). With this knowledge, we updated the data processing, the response, and the auxiliary files of GSO, and reproduced the HXD-PIN and HXD-GSO spectra of the Crab Nebula over 12-300 keV by a broken power-law with a break energy of ̃ 110 keV.