Very High Energy Astrophysics

极高能γ射线的探测已成为加入天体物理现象观测研究的现实可能。从1995至1998财政年度，我们利用优先领域补助金基金，试图研究“极高能量天体”，为了促进对极高能γ-射线和宇宙射线，特别注意发展和建立与从事电磁辐射其他波段以及粒子辐射邻近领域工作的人的协作联系。我们的工作包括两个主要项目（发展对最高能量宇宙射线的观测和促进对甚高能量γ射线的观测），以及宇宙射线、γ射线观测和理论研究领域的一些其他较小规模的项目。如二零零零年一月发表的报告所述，一九九九年已检讨这些计划的成果和成效， ...更多信息 内容概括为：（1）我们的努力为建立观测极高能γ射线领域的最新进展做出了贡献，例如，发现了几个发射这种γ射线的源;（2）在四年中组织了六次国内和一次国际γ射线天文学术讨论会，这可能会形成一个不断增长的我们计划下一步建立一个由四台望远镜组成的系统，用于观测甚高能γ射线，100 GeV的射线，该提案获得资助，被采纳为科学研究补助金的“卓越中心”计划之一，并于1999财政年度开始建设。东京大学宇宙射线研究所同意将探测最高能量（超过1020 eV）的项目作为一项重大计划加以推广。因此，我们的努力并非毫无用处，我们相信在今后的岁月里会有一个良好的前景。少

Detection of very high energy γ-rays has been made practically possible to join observational study of astrophysical phenomena. We have attempted, by using the fund of Grant-in-Aid for the Field of Prioriy, "very high energy celestial objects", from 1995 to 1998 fiscal years, to promote the study of very high energy γ-rays and cosmic rays paying a special attention to develop and establish a collaborative link with people working in the other bands of electromagnetic radiation as well as those in the neighboring fields of particle physics and theoretical studies.Our efforts consist of two major projects (for developing observation of highest energy cosmic rays and for promoting observation of very high energy γ-rays) combined with a number of other projects of smaller sizes in the area of cosmic rays, γ-ray observation and theoretical studies. The results and outcomes of these projects have been reviewed during the 1999 year as described in the report published in January 2000, and the … More contents are summarized as ; (1) our efforts have contributed to the recent progress of establishing the field of observing very high energy γ-rays, for instance, by discovering several sources of emitting such γ-rays ; (2) six domestic and one international symposium are organized during the four years for discussing γ-ray astronomy among many from neighboring fields, which would potentially form a growing (domestic) community to encourage further development of very high energy γ-ray astrophysics in Japan.We have planned as the next step to have a system of four telescopes for very high energy γ-rays of 100 GeV, and the proposal was funded, adopted as one of the "Center of Excellence" program of Grant-in-Aid for scientific researches, and the construction was commenced in the 1999 fiscal years. A project for detecting the highest energy (beyond 1020 eV is agreed to be promoted as a major plan of Institute for Cosmic Ray Research, University of Tokyo. Thus, our efforts were not useless and we believe a good prospect will follow in the years to come. Less