arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0706.2283astro-phhep-ex
收藏

在Super-Kamiokande寻找超新星中微子爆发

Search for Supernova Neutrino Bursts at Super-Kamiokande

Kamiokande Collaboration, M. Ikeda, A. Takeda, Y. Fukuda, M. R. Vagins

摘要:

本文报道了用Super-Kamiokande探测器对超新星爆炸中的中微子暴进行探测的结果。Super-Kamiokande通过观察中微子的排放对核心坍缩超新星爆炸很敏感。在我们银河系典型距离(10千秒差距)的核心坍缩超新星爆炸中,包含这样一个爆发的事件的预期数量约为10^4,中微子的平均能量在几十兆电子伏的范围内;这个大信号意味着在我们银河系内的任何地方以及麦哲伦云之外的任何地方的探测效率都是100%。我们研究了一组数据,这是从1996年5月至2001年7月,从2002年12月至2005年10月,相当于2589.2活天。然而,在数据采集期间没有这样的超新星爆炸的证据。90% C. L。在100千秒差距的距离内,核心坍缩超新星爆炸的速率上限为0.32 SN/年。

英文摘要:

The result of a search for neutrino bursts from supernova explosions using the Super-Kamiokande detector is reported. Super-Kamiokande is sensitive to core-collapse supernova explosions via observation of their neutrino emissions. The expected number of events comprising such a burst is ~10^4 and the average energy of the neutrinos is in few tens of MeV range in the case of a core-collapse supernova explosion at the typical distance in our galaxy (10 kiloparsecs); this large signal means that the detection efficiency anywhere within our galaxy and well past the Magellanic Clouds is 100%. We examined a data set which was taken from May, 1996 to July, 2001 and from December, 2002 to October, 2005 corresponding to 2589.2 live days. However, there is no evidence of such a supernova explosion during the data-taking period. The 90% C.L. upper limit on the rate of core-collapse supernova explosions out to distances of 100 kiloparsecs is found to be 0.32 SN/year.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑