网站地图 联系我们 English 中国科学院
首页紫台简介机构设置新闻动态科研成果研究队伍合作交流天文学院创新文化党群园地信息公开
新闻动态
图片新闻
综合新闻
天文快讯
Colloquium & 学术交流
国内外天文学术会议
紫台通讯
传媒扫描
科普动态
科研信息
台内新闻
您当前的位置:首页>新闻动态>Colloquium & 学术交流
10月20日 Science News & Journal Club Public Talk
2017年10月20日

  Science News:

  报告人:耿超

  Journal Club Public Talk:

  报告人:杨航

  报告题目:Real or not: The 3.5 keV line?

  报告摘要:The 3.5 keV emission line is a newly discovered feature in Xrays, independently by Bulbul et al. (2014) and Boyarsky et al. (2014). Though the detection of this line is still under debate, its mysterious origin has attracted much attention from a variety of researchers. Of the most interest is the scenario that this line is produced by the two-body decay of so-called sterile neutrinos, which is one of the candidates of the dark matter particle. As more and more attention has been paid, louder become the voices of different views on whether this line is a real signal, or just an artifact. However, yet a conclusion can be made so far. In this talk, I will briefly introduce the story of this special line: how it was found; what are the explanations of its possible origin; the debate on its authenticity. Real or not, that is still an open question.

  主要参考文献:

  Bulbul, E. et al. 2014, ApJ, 789, 13

  Boyarsky, A. et al. 2014, Phys. Rev. Lett., 113, 251301

  Franse, J. et al. 2016, ApJ, 829:124

  Hitomi Collaboration 2017, ApJL, 837, L15

  时间:2017年10月20日12:15-1:45pm

  地点:紫台619会议室

地址:(210034)南京市栖霞区元化路8号(南大科学园内) 电话:86-25-83332000 传真:86-25-83332091
版权所有:中国科学院紫金山天文台 http://www.pmo.cas.cn pmoo@pmo.ac.cn 备案序号:苏ICP备05007736号