arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.4877astro-ph.HEastro-ph.COastro-ph.GA
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由光学光变曲线估算坍缩超新星的爆发时间

Estimating the Explosion Time of Core-Collapse Supernovae from Their Optical Light Curves

D. F. Cowen, A. Franckowiak, M. Kowalski

摘要:

核心坍缩超新星是高能中微子的主要候选来源之一。因此,IceCube合作已经启动了一个寻找这种信号的计划。冰立方对中微子爆发进行在线搜索,将候选事件的方向转发到光学望远镜网络,以便立即进行后续观测。如果超新星是从光学观测中确定的,除了方向上的符合之外,还需要建立时间上的光子-中微子符合。为了实现这一点,我们提出了一种方法来估计超新星爆炸时间从它的光变曲线使用一个简单的模型。我们用SN 1987 A、SN 2006 aj和SN 2008 D的超新星光变曲线数据测试了该模型,结果表明,爆炸时间可以以优于几个小时的精度确定。

英文摘要:

Core-collapse supernovae are among the prime candidate sources of high energy neutrinos. Accordingly, the IceCube collaboration has started a program to search for such a signal. IceCube operates an online search for neutrino bursts, forwarding the directions of candidate events to a network of optical telescopes for immediate follow-up observations. If a supernova is identified from the optical observations, in addition to a directional coincidence a temporal photon-neutrino coincidence also needs to be established. To achieve this, we present a method for estimating the supernova explosion time from its light curve using a simple model. We test the model with supernova light curve data from SN1987A, SN2006aj and SN2008D and show that the explosion times can be determined with an accuracy of better than a few hours.

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。

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