Kyoto University
Kyoto University : Unit of Synergetic Studies for Space, Kyoto University
Kyoto University
Kyoto University
Unit of Synergetic Studies for Space, Kyoto University : Kyoto University
Kyoto University
Kyoto University
Kyoto University : Unit of Synergetic Studies for Space, Kyoto University
Kyoto University
Kyoto University : Unit of Synergetic Studies for Space, Kyoto University
In MeV gamma-ray region, there is no advances from COMPTEL observation, whereas it is expected to be a useful probe of nucleosynthesis, particle acceleration, strong gravity, and first stars. For opening a window in MeV gamma-ray astronomy, we are developing an electron-tracking Compton camera (ETCC) having a well-defined point spread function (PSF) and some powerful background rejection tools based on tracking technology of Compton-recoil electron. In 2006, we had the first balloon flight using a small-size ETCC for a demonstration of gamma-ray detection at the balloon altitude (Sub-MeV gamma-ray Imaging loaded on balloon Experiment-I: SMILE-I), and it was successful to observe the intensities of diffuse cosmic and atmospheric gamma rays. As the next step, we are constructing and studying a middle-size ETCC (SMILE-II) using a 30 cm-cubic gaseous electron tracker for the observation of the bright celestial objects. Using SMILE-II ETCC, we validated the effective area, the angular resolution, the background rejection power, and the ability of the polarization measurement by some ground calibrations. In this paper, we summarize the performance and the validation results of SMILE-II ETCC, and present the expectations in the future observations.
内容記述
著者人数: 20名
形態: カラー図版あり
内容記述（英）
Number of authors: 20
Physical characteristics: Original contains color illustrations
電子飛跡検出型コンプトン望遠鏡によるMeVガンマ線天文学の革新
AA1630045003.pdf
(10.68MB)
