Observation of Ultra high-energy Gamma-rays from SN1987a

SN1987a 超高能伽马射线的观测

• 批准号: 63044071
• 负责人: SATO Humitaka
• 金额: $ 7.68万
• 依托单位: Faculty of Science, Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Overseas Scientific Survey.
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63044071/
• 关键词: Super Nova; SN1987A; Cosmic Gamma-rays; Pulsar

A search for ultra high-energy gamma-ray emission from Supernova 1987A has been made from 13 October 1987 with the aid of the Monbusho International Scientific Research Program. Although we have not seen ultra high-energy gamma-rays from SN1987A (as of early 1990), the world's most stringent upper limits have been obtained in our experiment: Igamma<5.7X10^<-14>cm^2.s^<-1> for Egamma<greater than or equal>75 TeV. In January 1988, we observed very high-energy gamma-rays associated with the X-ray flare observed by the Ginga satellite. Since the recent optical curve of SN1987A indicates a pulsar component at L<less than or equal> 10^<38> erg.sec, it is important to continue this experiment to observe SN1987A.

1987年10月13日，在蒙布绍国际科学研究计划的帮助下，对超新星1987A的超高能γ射线辐射进行了搜索。虽然我们还没有看到来自SN 1987 A的超高能伽马射线（截至1990年初），但在我们的实验中已经获得了世界上最严格的上限：对于75 TeV的伽马，I伽马&lt;5.7 × 10 ^<-14>cm ^2. s ^<-1><greater than or equal>。1988年1月，我们观测到与Ginga卫星观测到的X射线耀斑有关的极高能伽马射线。由于SN 1987 A的最新光学曲线表明在L10 ^ erg.sec处有脉冲星成分<less than or equal><38>，因此继续进行该实验以观测SN 1987 A是很重要的。