Dept. of Physics, Univ. of Tokyo
Instituto Nacional De Pesquisas Espaciais
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Rikkyo Univ.
Instituto Nacional De Pesquisas Espaciais
Nat. Lab. for High Energy Phys. (KEK)
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Univ. of Tokyo
Dept. of Physics, Univ. of Tokyo
Inst. of Space Astro. Science
出版者
宇宙科学研究所
出版者（英）
Institute of Space and Astronautical Science
雑誌名
宇宙科学研究所報告. 特集: 大気球研究報告
巻
30
ページ
61 - 81
発行年
1992-02
抄録（英）
We have developed a new kind of phoswih counters (the well-type phoswich counter) that is capable of detecting very low flux hard X-rays/gamma-rays (60-800 keV) from astronomical object. We flew the first prototype detector system (Welcome-1) from Cachoeira Paulista, Brazil in November 1990. The objective was to detect ^<57>Co (122,136keV) and continuum emission from SN1987A. The background spectrum taken at an altitude of 4g/cm^2 indicates that the 3σ sensitivity reaches ∿a few×10^<-6>/cm^2/s/keV and ∿10^<-4>/cm^2/s by 10^4s observation for the continuum spectrum and line spectrum respectively.
New Hard X-ray/Gamma-ray Telescope-Welcome 1 and Observation of SN 1987 A
SA0167027.pdf
(1.2MB)
