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arXiv 2303.09249astro-ph.HEastro-ph.IM
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用SKA测量cosmic-ray空气簇射器纵向粒子分布的前景

Prospects for measuring the longitudinal particle distribution of cosmic-ray air showers with SKA

A. Corstanje, S. Buitink, J. Bhavani, M. Desmet, H. Falcke, B. M. Hare, J. R. Hörandel, T. Huege, N. Karasthatis, G. K. Krampah, P. Mitra, K. Mulrey, A. Nelles,… 展开作者

A. Corstanje, S. Buitink, J. Bhavani, M. Desmet, H. Falcke, B. M. Hare, J. R. Hörandel, T. Huege, N. Karasthatis, G. K. Krampah, P. Mitra, K. Mulrey, A. Nelles, K. Nivedita, H. Pandya, J. P. Rachen, O. Scholten, S. Thoudam, G. Trinh, S. ter Veen

摘要:

我们探讨的可能性,测量的纵向轮廓的个别空气淋浴超过$X_{\rm max}$时,使用非常密集的无线电阵列,如SKA。将在澳大利亚建造的平方公里阵列的低频部分的特点是在半径500米的内核区域内有大约$50,000$天线的巨大天线密度,频带从50到350兆赫。从CoREAS模拟,SKA-Low天线模型加上噪声贡献,以及适应LOFAR分析脚本,我们获得了簇射最大值$X_{\rm max}$和能量的分辨率,大大优于LOFAR。已经从这个设置,我们表明,至少有一个额外的参数的纵向轮廓可以测量。这将通过测量额外的成分依赖量来改进质量成分分析。此外,它将提供一个机会来区分强子相互作用模型的不同预测,从而在人造加速器之外的能级上为强子物理学做出贡献。

英文摘要:

We explore the possibilities of measuring the longitudinal profile of individual air showers beyond $X_{\rm max}$ when using very dense radio arrays such as SKA. The low-frequency part of the Square Kilometre Array, to be built in Australia, features an enormous antenna density of about $50,000$ antennas in the inner core region of radius 500 m, with a frequency band from 50 to 350 MHz. From CoREAS simulations, a SKA-Low antenna model plus noise contributions, and adapted LOFAR analysis scripts, we obtain a resolution in the shower maximum $X_{\rm max}$ and energy that is considerably better than at LOFAR. Already from this setup, we show that at least one additional parameter of the longitudinal profile can be measured. This would improve mass composition analysis by measuring an additional composition-dependent quantity. Moreover, it would offer an opportunity to discriminate between the different predictions of hadronic interaction models, hence contributing to hadronic physics at energy levels beyond man-made accelerators.

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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