当前位置: X-MOL 学术Sol. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Development of a Method for Determining the Search Window for Solar Flare Neutrinos
Solar Physics ( IF 2.7 ) Pub Date : 2020-10-01 , DOI: 10.1007/s11207-020-01706-z
K. Okamoto , Y. Nakano , S. Masuda , Y. Itow , M. Miyake , T. Terasawa , S. Ito , M. Nakahata

Neutrinos generated during solar flares remain elusive. However, after $50$ years of discussion and search, the potential knowledge unleashed by their discovery keeps the search crucial. Neutrinos associated with solar flares provide information on otherwise poorly known particle acceleration mechanisms during solar flare. For neutrino detectors, the separation between atmospheric neutrinos and solar flare neutrinos is technically encumbered by an energy band overlap. To improve differentiation from background neutrinos, we developed a method to determine the temporal search window for neutrino production during solar flares. Our method is based on data recorded by solar satellites, such as Geostationary Operational Environmental Satellite (GOES), Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), and GEOTAIL. In this study, we selected 23 solar flares above the X5.0 class that occurred between 1996 and 2018. We analyzed the light curves of soft X-rays, hard X-rays, $\gamma$-rays, line $\gamma$-rays from neutron capture as well as the derivative of soft X-rays. The average search windows are determined as follows: $4,178$ s for soft X-ray, $700$ s for derivative of soft X-ray, $944$ s for hard X-ray ($100$-$800$ keV), $1,586$ s for line $\gamma$-ray from neutron captures, and $776$ s for hard X-ray (above $50$ keV). This method allows neutrino detectors to improve their sensitivity to solar flare neutrinos.

中文翻译:

确定太阳耀斑中微子搜索窗口的方法的发展

太阳耀斑期间产生的中微子仍然难以捉摸。然而,经过 50 美元多年的讨论和搜索,他们的发现释放的潜在知识使搜索变得至关重要。与太阳耀斑相关的中微子提供了关于太阳耀斑期间鲜为人知的粒子加速机制的信息。对于中微子探测器,大气中微子和太阳耀斑中微子之间的分离在技术上受到能带重叠的阻碍。为了改善与背景中微子的区别,我们开发了一种方法来确定太阳耀斑期间中微子产生的时间搜索窗口。我们的方法基于太阳卫星记录的数据,例如地球同步运行环境卫星 (GOES)、鲁文拉马蒂高能太阳光谱成像仪 (RHESSI) 和 GEOTAIL。在这项研究中,我们选取了 1996 年至 2018 年间发生的 X5.0 级以上的 23 个太阳耀斑。我们分析了来自中子的软 X 射线、硬 X 射线、$\gamma$ 射线、线 $\gamma$ 射线的光变曲线捕获以及软 X 射线的导数。平均搜索窗口确定如下:软 X 射线为 4,178 美元,软 X 射线衍生物为 700 美元,硬 X 射线为 944 美元(100 美元-800 美元 keV),1,586 美元为来自中子捕获的 $\gamma$ 射线,硬 X 射线(高于 $50$keV)$776$s。这种方法允许中微子探测器提高它们对太阳耀斑中微子的灵敏度。平均搜索窗口确定如下:软 X 射线为 4,178 美元,软 X 射线衍生物为 700 美元,硬 X 射线为 944 美元(100 美元-800 美元 keV),1,586 美元为来自中子捕获的 $\gamma$ 射线,硬 X 射线(高于 $50$keV)$776$s。这种方法允许中微子探测器提高它们对太阳耀斑中微子的灵敏度。平均搜索窗口确定如下:软 X 射线为 4,178 美元,软 X 射线衍生物为 700 美元,硬 X 射线为 944 美元(100 美元-800 美元 keV),1,586 美元为来自中子捕获的 $\gamma$ 射线,硬 X 射线(高于 $50$keV)$776$s。这种方法允许中微子探测器提高它们对太阳耀斑中微子的灵敏度。
更新日期:2020-10-01
down
wechat
bug