11th Geant4 Space Users Workshop

Session

Space missions - instruments and detectors (1)

27 Aug 2015, 15:50

Hiroshima Institute of Technology Hiroshima Campus, Hiroshima, Japan

Conveners

Space missions - instruments and detectors (1)

• Tsunefumi Mizuno (Hiroshima University)

35. Geant4 Applications to High Energy Astrophysics

Dr Hirokazu Odaka (ISAS/JAXA)

27/08/2015, 15:50

An astrophysical system harboring a strong gravity star such as a black hole or a neutron star accretes gas from the circumstellar environment, releasing enormous gravitational energy via accretion onto the deep potential. Since a large fraction of the accretion power is released in a form of X-ray radiation, X-ray spectral and temporal information is an important probe to study the energetic...

2. In-orbit Performance Estimation of the Hard X-ray Imager onboard ASTRO-H with Monte Carlo simulations

Kouichi Hagino (ISAS/JAXA)

27/08/2015, 16:15

The Hard X-ray Imager (HXI) is one of four instruments onboard 6th Japanese X-ray satellite, ASTRO-H, which is scheduled to be launched in FY 2015. Combined with hard X- ray telescopes, the HXI will realize imaging spectroscopy in hard X-ray band ranging from 5 keV to 80 keV with a sensitivity which is two orders of magnitude better than that of Suzaku/HXD. The HXI is composed of a stacked...

0. Development and Verification of the Response Function for the BGO Active Shields onboard ASTRO-H

Dr Masanori Ohno (Hiroshima University)

27/08/2015, 16:40

The Hard X-ray Imager (HXI) and the Soft Gamma-ray Detector (SGD), onboard instruments of Japanese 6th X-ray observatory, ASTRO-H, are surrounded by the large number of BGO (Bi$_4$Ge$_3$O$_{12}$) scintillators for active shielding. These active shields are very important to reduce the non X-ray background such as cosmic rays and/or gamma-rays from radioisotopes produced by activation of the...

1. The localizing algorithm of gamma-ray bursts and evaluation of systematic error in Suzaku Wide-band All-sky Monitor using Geant4

Takeshi Fujinuma (Saitama University)

27/08/2015, 17:05

The Wide-band All-sky Monitor (WAM) on board the X-ray astronomical satellite Suzaku consists of four sides of BGO scintillation counters within the Hard X-ray Detector. Thanks to large effective area (800 cm2 at 100 keV) and field of view of ∼ 2π st, the WAM has detected transient objects, such as Gamma-Ray Bursts (GRBs) and Solar flares, approximately 300 event per year. However, the WAM...