Simultaneous observation of TeV time-variable objects and gamma-ray burst afterglows with an optical telescope

用光学望远镜同时观测TeV时变物体和伽马射线暴余辉

基本信息

批准号：
14540248
负责人：
MORI Masaki
金额：
$ 1.66万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540248/
关键词：
Gamma-ray objects Active galactic nuclei Gamma-ray burst CCD camera

项目摘要

We installed a small automated optical telescope system next to CANGAROO, an array of four imaging Cherenkov telescopes for very-high-energy gamma-ray observation in Woomera, South Australia, in collaboration of Japanese and Australian institutions. The main aim of this project is to monitor time-variable TeV objects, such as active galactic nuclei, and to execute follow-up observations of gamma-ray burst afterglows in optical waveband. Also this telescope can be used to monitor atmospheric condition which is important in Cherenkov observations by observing starlight extinction near the field-of-view of the Cherenkov observations.The system consists of a 30-cm diameter Schmidt-Cassegrain telescope (Meade LX200-30) and a cooled CCD camera (Apogee Ap-7p) controlled by a Linux-based computer via a network. It is equipped with an automated filter wheel with Johnson filters, thus enabling multiwavelength photometry. The observation hut has an automatic roof with use of motors which can be controlled by the computer. For automatic operation it includes various sensors such as a rain monitor which triggers automatic closing of the roof. We developed the software for all of these with help of collaborators. We succeeded in taking some test images with this system. This automated system has been under final tuning and testing in Woomera. With a continuous network connection, it can be used for follow-up observation of gamma-ray burst afterglows.

我们在坎加鲁（Cangaroo）旁边安装了一个小型自动化的光学望远镜系统，这是在南澳大利亚州Woomera的四个成像Cherenkov望远镜组成的，用于与日本和澳大利亚机构合作，以进行非常高的能量伽马射线观察。该项目的主要目的是监视时间变化的TEV对象，例如活动的银河核，并执行光波段中伽马射线爆发余潮的后续观察。此外，该望远镜可用于监测大气条件，这在Cherenkov观察中很重要，通过观察Cherenkov观察的视野附近的星光灭绝。该系统由直径30厘米的schmidt-cassegrain望远镜组成，并通过靠Meade lx200-30）（Meade lx200-30）（A linep ccd ccd ccd ccd ccd ccd opee ccd oppo）组成。网络。它配备了带有约翰逊过滤器的自动滤轮，从而实现了多波长的光度法。观察小屋具有自动屋顶，并使用电动机可以由计算机控制。对于自动操作，它包括各种传感器，例如雨监视器，该传感器会触发屋顶自动关闭。我们在合作者的帮助下为所有这些软件开发了该软件。我们成功地使用了该系统拍摄一些测试图像。该自动化系统一直在Woomera的最终调整和测试下。通过连续的网络连接，它可用于对伽玛射线爆发余潮的后续观察。