Study of Hard X-rays and gamma -rays from AGN's aboard Balloons

研究气球上活动星系核发出的硬 X 射线和伽马射线

• 批准号: 03041022
• 负责人: KAMAE Tsuneyoshi
• 金额: $ 19.2万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03041022/
• 关键词: balloon; scintillator; X-ray astronomy; Gamma-ray astronomy; phoswich counter; γ線天文学; X-線天文学; 気球; 気球実験; ガンマ線天文学; 硬X線望遠鏡; 活動銀河核; 銀河中心; パルサー; ブラックホ-ル; パルサ-; 硬X; γ線検出器; 井戸型フォスウイッチカウンタ-

We have been developing a new hard X-ray/Gamma-ray(40keV - 800keV)detector, Welcome-1. Its characteristic is the low-background counts, which is very important factor of the balloon or satellite-borne detector. The detector utilizes the well-type phoswich counter and the compound-eye configuration. Based on the experience with the Welcome -1 detector launched from Brazil, we have improved the detector. In order to obtain higher sensitivity along the line we have pursued, we have reduced the background by narrowing the opening angle of the detector and replacing the main scintillation detector from GSO to Nal.We performed the balloon-borne experiment at Sanriku, Japan on June 5, 1993. Dr. Tim Edberg was invited as a co-investigator. We observed Crab Nebuula/Pulsar for three hours. Signal to noise ration at the energy range from 50keV to 150 keV exceeds 1.5 in which the flux from the source is reduced to 1/3 by tghe air-attenuation. This S/N ration is the highest among the hard X-ray detectors launched so far. In order to discuss, the feasibility and possible procedures for the future collaborative balloon campaign, we went abroad and discussed with the chair person at several institutes.

我们一直在开发一种新型硬X射线/伽马射线（40keV - 800keV）探测器Welcome-1。其特点是低本底计数，这是气球或星载探测器的一个非常重要的因素。该探测器采用井式福斯维奇计数器和复眼配置。根据巴西发射的欢迎-1探测器的经验，我们对探测器进行了改进。为了沿着我们所追求的路线获得更高的灵敏度，我们通过缩小探测器的张角以及将主闪烁探测器从GSO更换为Nal来降低背景。我们于6月在日本三陆进行了气球载实验1993年12月5日，Tim Edberg博士被邀请作为联合研究员。我们观察了蟹状星云/脉冲星三个小时。 50keV 至 150 keV 能量范围内的信噪比超过 1.5，其中来自源的通量因空气衰减而减少至 1/3。该信噪比是迄今为止推出的硬X射线探测器中最高的。为了探讨未来合作气球活动的可行性和可能的​​程序，我们出国与多个机构的主席进行了讨论。

项目成果

T.Kamae,T.Takahashi et al.: "Observation of Pulsed Hard X-Ray/γ-Ray from PSR 1059-58" To be publised in Astrophysical Journal. (in press).

T.Kamae、T.Takahashi 等人：“来自 PSR 1059-58 的脉冲硬 X 射线/γ 射线的观测”将发表在《天体物理学杂志》上（正在出版）。

H.MURAKAMI,T.KAMAE and S.GUNJI: "A Simple Pulse Discrimination Method for Phoswich Counter" IEEE Transaction on Nuclear Science. vol.139. (1992)

H.MURAKAMI、T.KAMAE 和 S.GUNJI：“一种用于 Phoswich 计数器的简单脉冲识别方法”IEEE 核科学汇刊。

T.TAKAHASHI, S.GUNJI,M.HIRAYAMA,T.KAMAE: "New Hard X-ray / Gamma-ray Telescope -Welcome-1-" SPIE. Gamma-Ray Detectors. vol.1734. 44 (1992)

T.TAKAHASHI、S.GUNJI、M.HIRAYAMA、T.KAMAE：“新型硬 X 射线/伽马射线望远镜 -Welcome-1-” SPIE。

M.Ejiri,A.Kadokura,T.Hirasawa,N.Sato,R.Fujii,H.Miyaoka,J.Nishimura,N.Yajima,T.Yamagami,S.Kokubun,H.Fukunish,M.Yamanak and M.Kodama: "Polar Patrol Balloon Experiment in Antarctica" Adv.Space Rev.13-2. 27-30 (1993)

M.Ejiri、A.Kadokura、T.Hirasawa、N.Sato、R.Fujii、H.Miyaoka、J.Nishimura、N.Yajima、T.Yamagami、S.Kokubun、H.Fukunish、M.Yamanak 和 M.

T.KAMAE,T.TAKAHASHI,M.TANAKA and S.GUNJI: "Detector to Study Low-Flux Hard X Ray / Gamma-Ray Sources" Adv. Space Res.vol.13. (1992)

T.KAMAE、T.TAKAHASHI、M.TANAKA 和 S.GUNJI：“用于研究低通量硬 X 射线/伽马射线源的探测器”Adv。